<PAGE>

                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 10-K

(Mark One)

/XX/    ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
        EXCHANGE ACT OF 1934

For the fiscal year ended       December 31, 1997
                         ------------------------------------------------------

                                       OR

/  /    TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
        SECURITIES EXCHANGE ACT OF 1934 [NO FEE REQUIRED]

For the transition period from                    to
                              --------------------   --------------------------
Commission file number     33-35148-02
                      ---------------------------------------------------------

         American Income Fund I-B , a Massachusetts Limited Partnership
-------------------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)

Massachusetts                                 04-3106525
-------------------------------------         ---------------------------------
(State or other jurisdiction of               (IRS Employer
 incorporation or organization)               Identification No.)

88 Broad St., Sixth Floor, Boston, MA         02110
--------------------------------------        ---------------------------------
(Address of principal executive offices)      (Zip Code)

Registrant's telephone number, including area code     (617) 854-5800
                                                  -----------------------------

Securities registered pursuant to Section 12(b) of the Act        NONE
                                                          ---------------------

Title of each class                   Name of each exchange on which registered
---------------------------------     -----------------------------------------
---------------------------------     -----------------------------------------

Securities registered pursuant to Section 12(g) of the Act:

            286,711 Units Representing Limited Partnership Interest
-------------------------------------------------------------------------------
                                (Title of class)

-------------------------------------------------------------------------------
                                (Title of class)

     Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days. Yes XX   No
                                             ----    ----

     State the aggregate market value of the voting stock held by nonaffiliates
of the registrant. Not applicable. Securities are nonvoting for this purpose.
Refer to Item 12 for further information.


                            AMERICAN INCOME FUND I-B,
                       a Massachusetts Limited Partnership

                       DOCUMENTS INCORPORATED BY REFERENCE
        Portions of the Registrant's Annual Report to security holders for
                the year ended December 31, 1997 (Part I and II)

<PAGE>

                                    FORM 10-K

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>

                                                                                                  Page
                                                                                                  ----
                                     PART I
<S>          <C>                                                                                  <C>
Item 1.      Business                                                                                3

Item 2.      Properties                                                                              5

Item 3.      Legal Proceedings                                                                       5

Item 4.      Submission of Matters to a Vote of Security Holders                                     5


                                     PART II

Item 5.      Market for the Partnership's Securities and Related Security Holder Matters             6

Item 6.      Selected Financial Data                                                                 7

Item 7.      Management's Discussion and Analysis of Financial Condition and Results of
             Operations                                                                              7

Item 8.      Financial Statements and Supplementary Data                                             7

Item 9.      Changes in and Disagreements with Accountants on Accounting and Financial
             Disclosure                                                                              7


                                    PART III

Item 10.     Directors and Executive Officers of the Partnership                                      8

Item 11.     Executive Compensation                                                                  10

Item 12.     Security Ownership of Certain Beneficial Owners and
             Management                                                                              10

Item 13.     Certain Relationships and Related Transactions                                          11


                                     PART IV

Item 14.     Exhibits, Financial Statement Schedules and Reports on Form 8-K                      13-15

</TABLE>

                                      - 2 -

<PAGE>

PART I

Item 1.  Business.
------------------

     (a) General Development of Business

     American Income Fund I-B, a Massachusetts Limited Partnership, (the
"Partnership") was organized as a limited partnership under the Massachusetts
Uniform Limited Partnership Act (the "Uniform Act") on December 31, 1990 for the
purpose of acquiring and leasing to third parties a diversified portfolio of
capital equipment. Partners' capital initially consisted of contributions of
$1,000 from the General Partner (AFG Leasing VI Incorporated) and $100 from the
Initial Limited Partner (AFG Assignor Corporation). On March 1, 1991, the
Partnership issued 286,711 units of limited partnership interest (the "Units")
to 453 investors. The Partnership has one General Partner, AFG Leasing VI
Incorporated, a Massachusetts corporation formed in 1990 and an affiliate of
Equis Financial Group Limited Partnership (formerly American Finance Group), a
Massachusetts limited partnership ("EFG" or the "Manager"). The General Partner
is not required to make any other capital contributions except as may be
required under the Uniform Act and Section 6.1(b) of the Amended and Restated
Agreement and Certificate of Limited Partnership (the "Restated Agreement, as
amended").

     (b) Financial Information About Industry Segments

     The Partnership is engaged in only one industry segment: the business of
acquiring capital equipment and leasing the equipment to creditworthy lessees on
a full payout or operating lease basis. Full payout leases are those in which
aggregate noncancellable rents equal or exceed the Purchase Price of the leased
equipment. Operating leases are those in which the aggregate noncancellable
rental payments are less than the Purchase Price of the leased equipment.
Industry segment data is not applicable.

     (c) Narrative Description of Business

     The Partnership was organized to acquire a diversified portfolio of capital
equipment subject to various full payout and operating leases and to lease the
equipment to third parties as income-producing investments. More specifically,
the Partnership's primary investment objectives are to acquire and lease
equipment which will:

     1. Generate quarterly cash distributions;

     2. Preserve and protect Partnership capital; and

     3. Maintain substantial residual value for ultimate sale.

     The Partnership has the additional objective of providing certain federal
income tax benefits.

     The Closing Date of the offering of Units of the Partnership was March 1,
1991. Significant operations commenced coincident with the Partnership's initial
purchase of equipment and the associated lease commitments on March 1, 1991. The
acquisition of the equipment and its associated leases is described in detail in
Note 3 to the financial statements included in Item 14, herein. The Partnership
will terminate no later than December 31, 2002; however, the Partnership is a
Nominal Defendant in a Class Action Lawsuit. The outcome of the Class Action
Lawsuit could alter the nature of the Partnership's organization and its future
business operations. See Note 7 to the accompanying financial statements.

     The Partnership has no employees; however, it is managed pursuant to a
Management Agreement with EFG or one of its affiliates. The Manager's role,
among other things, is to (i) evaluate, select, negotiate, and consummate the
acquisition of equipment, (ii) manage the leasing, re-leasing, financing, and
refinancing of equipment, and (iii) arrange the resale of equipment. The Manager
is compensated for such services as described in the Restated Agreement, as
amended, Item 13 herein, and in Note 4 to the financial statements included in
Item 14, herein.

     The Partnership's investment in equipment is, and will continue to be,
subject to various risks, including physical deterioration, technological
obsolescence and defaults by lessees. A principal business risk of owning

                                      - 3 -

<PAGE>

and leasing equipment is the possibility that aggregate lease revenue and
equipment sale proceeds will be insufficient to provide an acceptable rate of
return on invested capital after payment of all debt service costs and operating
expenses. Consequently, the success of the Partnership is largely dependent upon
the ability of the General Partner and its Affiliates to forecast technological
advances, the ability of the lessees to fulfill their lease obligations and the
quality and marketability of the equipment at the time of sale.

     In addition, the leasing industry is very competitive. Although all funds
available for acquisitions have been invested in equipment, subject to
noncancellable lease agreements, the Partnership will encounter considerable
competition when equipment is re-leased or sold at the expiration of primary
lease terms. The Partnership will compete with lease programs offered directly
by manufacturers and other equipment leasing companies, including limited
partnerships and trusts organized and managed similarly to the Partnership, and
including other EFG-sponsored partnerships and trusts, which may seek to
re-lease or sell equipment within their own portfolios to the same customers as
the Partnership. Many competitors have greater financial resources and more
experience than the Partnership, the General Partner and the Manager.

     Generally, the Partnership is prohibited from reinvesting the proceeds
generated by refinancing or selling equipment. Accordingly, it is anticipated
that the Partnership will begin to liquidate its portfolio of equipment at the
expiration of the initial lease terms and to distribute the net liquidation
proceeds. As an alternative to sale, the Partnership may enter re-lease
agreements when considered advantageous by the General Partner and the Manager.

     Revenue from major individual lessees which accounted for 10% or more of
lease revenue during the years ended December 31, 1997, 1996 and 1995 is
incorporated herein by reference to Note 2 to the financial statements in the
1997 Annual Report. Refer to Item 14(a)(3) for lease agreements filed with the
Securities and Exchange Commission.

     Default by a lessee under a lease may cause equipment to be returned to the
Partnership at a time when the General Partner or the Manager is unable to
arrange for the re-lease or sale of such equipment. This could result in the
loss of a material portion of anticipated revenue and significantly weaken the
Partnership's ability to repay related debt.

     EFG is a Massachusetts limited partnership formerly known as American
Finance Group ("AFG"). AFG was established in 1988 as a Massachusetts general
partnership and succeeded American Finance Group, Inc., a Massachusetts
corporation organized in 1980. EFG and its subsidiaries (collectively, the
"Company") are engaged in various aspects of the equipment leasing business,
including EFG's role as Manager or Advisor to the Partnership and several other
Direct-Participation equipment leasing programs sponsored or co-sponsored by EFG
(the "Other Investment Programs"). The Company arranges to broker or originate
equipment leases, acts as remarketing agent and asset manager, and provides
leasing support services, such as billing, collecting, and asset tracking.

     The general partner of EFG, with a 1% controlling interest, is Equis
Corporation, a Massachusetts corporation owned and controlled entirely by Gary
D. Engle, its President and Chief Executive Officer. Equis Corporation also owns
a controlling 1% general partner interest in EFG's 99% limited partner, GDE
Acquisition Limited Partnership ("GDE LP"). Equis Corporation and GDE LP were
established in December 1994 by Mr. Engle for the sole purpose of acquiring the
business of AFG.

     In January 1996, the Company sold certain assets of AFG relating primarily
to the business of originating new leases, and the name "American Finance
Group," and its acronym, to a third party. AFG changed its name to Equis
Financial Group Limited Partnership after the sale was concluded. Pursuant to
terms of the sale agreements, EFG specifically reserved the rights to continue
using the name American Finance Group and its acronym in connection with the
Partnership and the Other Investment Programs and to continue managing all
assets owned by the Partnership and the Other Investment Programs.

     (d) Financial Information About Foreign and Domestic Operations and Export
Sales

     Not applicable.

                                      - 4 -

<PAGE>

Item 2. Properties.

     Incorporated herein by reference to Note 3 to the financial statements in
the 1997 Annual Report.

Item 3. Legal Proceedings.

     Incorporated herein by reference to Note 7 to the financial statements in
the 1997 Annual Report.

Item 4. Submission of Matters to a Vote of Security Holders.

     None.


                                      -5-

<PAGE>

PART II

Item 5.  Market for the Partnership's Securities and Related Security Holder
----------------------------------------------------------------------------
Matters.
--------

     (a) Market Information

     There is no public market for the resale of the Units and it is not
anticipated that a public market for resale of the Units will develop.

     (b) Approximate Number of Security Holders

     At December 31, 1997, there were 439 record holders in the Partnership.

     (c) Dividend History and Restrictions

     Pursuant to Article VI of the Restated Agreement, as amended, the
Partnership's Distributable Cash From Operations and Distributable Cash From
Sales or Refinancings are determined and distributed to the Partners quarterly.
Each quarter's distribution may vary in amount. Distributions may be made to the
General Partner prior to the end of the fiscal quarter; however, the amount of
such distribution reflects only amounts to which the General Partner is entitled
at the time such distribution is made. Currently, there are no restrictions that
materially limit the Partnership's ability to distribute Distributable Cash From
Operations and Distributable Cash From Sales or Refinancings or that the
Partnership believes are likely to materially limit the future distribution of
Distributable Cash From Operations and Distributable Cash From Sales or
Refinancings. The Partnership expects to continue to distribute all
Distributable Cash From Operations and Distributable Cash From Sales or
Refinancings on a quarterly basis.

     Distributions in 1997 and 1996 were as follows:


<TABLE>
<CAPTION>
                                                    General          Limited
                                        Total       Partner         Partners
                                    -----------    ----------    ------------
<S>                                 <C>            <C>           <C>
Total 1997 distributions            $   282,941    $   14,147    $    268,794

Total 1996 distributions                414,979        20,749         394,230
                                    -----------    ----------    ------------

                   Total            $   697,920    $   34,896    $    663,024
                                    -----------    ----------    ------------
                                    -----------    ----------    ------------

</TABLE>

     Distributions payable were $56,588 and $75,451 at December 31, 1997 and
1996, respectively.

     "Distributable Cash From Operations" means the net cash provided by the
Partnership's normal operations after general expenses and current liabilities
of the Partnership are paid, reduced by any reserves for working capital and
contingent liabilities to be funded from such cash, to the extent deemed
reasonable by the General Partner, and increased by any portion of such reserves
deemed by the General Partner not to be required for Partnership operations and
reduced by all accrued and unpaid Equipment Management Fees and, after Payout,
further reduced by all accrued and unpaid Subordinated Remarketing Fees.
Distributable Cash From Operations does not include any Distributable Cash From
Sales or Refinancings.

          "Distributable Cash From Sales or Refinancings" means Cash From Sales
or Refinancings as reduced by (i)(a) amounts realized from any loss or
destruction of equipment which the General Partner determines shall be
reinvested in similar equipment for the remainder of the original lease term of
the lost or destroyed equipment, or in isolated instances, in other equipment,
if the General Partner determines that investment of such proceeds will
significantly improve the diversity of the Partnership's equipment portfolio,
and subject in either case to satisfaction of all existing indebtedness secured
by such equipment to the extent deemed necessary or appropriate by the General
Partner, or (b) the proceeds from the sale of an interest in equipment pursuant
to any agreement governing a joint venture which the General Partner determines
will be invested in additional

                                      - 6 -

<PAGE>

equipment or interests in equipment and which ultimately are so reinvested and
(ii) any accrued and unpaid Equipment Management Fees and, after Payout, any
accrued and unpaid Subordinated Remarketing Fees.

     "Cash From Sales or Refinancings" means cash received by the Partnership
from sale or refinancing transactions, as reduced by (i)(a) all debts and
liabilities of the Partnership required to be paid as a result of sale or
refinancing transactions, whether or not then due and payable (including any
liabilities on an item of equipment sold which are not assumed by the buyer and
any remarketing fees required to be paid to persons not affiliated with the
General Partner, but not including any Subordinated Remarketing Fees whether or
not then due and payable) and (b) general expenses and current liabilities of
the Partnership (other than any portion of the Equipment Management Fee which is
required to be accrued and the Subordinated Remarketing Fee) and (c) any
reserves for working capital and contingent liabilities funded from such cash to
the extent deemed reasonable by the General Partner and (ii) increased by any
portion of such reserves deemed by the General Partner not to be required for
Partnership operations. In the event the Partnership accepts a note in
connection with any sale or refinancing transaction, all payments subsequently
received in cash by the Partnership with respect to such note shall be included
in Cash From Sales or Refinancings, regardless of the treatment of such payments
by the Partnership for tax or accounting purposes. If the Partnership receives
purchase money obligations in payment for equipment sold, which are secured by
liens on such equipment, the amount of such obligations shall not be included in
Cash From Sales or Refinancings until the obligations are fully satisfied.

     Each distribution of Distributable Cash From Operations and Distributable
Cash From Sales or Refinancings of the Partnership shall be made 95% to the
Limited Partners and 5% to the General Partner.

     "Payout" is defined as the first time when the aggregate amount of all
distributions to the Limited Partners of Distributable Cash From Operations and
Distributable Cash From Sales or Refinancings equals the aggregate amount of the
Limited Partners' original capital contributions plus a cumulative annual
distribution of 11% (compounded quarterly and calculated beginning with the last
day of the month of the Partnership's Closing Date) on their aggregate
unreturned capital contributions. For purposes of this definition, capital
contributions shall be deemed to have been returned only to the extent that
distributions of cash to the Limited Partners exceed the amount required to
satisfy the cumulative annual distribution of 11% (compounded quarterly) on the
Limited Partners' aggregate unreturned capital contributions, such calculation
to be based on the aggregate unreturned capital contributions outstanding on the
first day of each fiscal quarter.

     Distributable Cash From Operations and Distributable Cash From Sales or
Refinancings ("Distributions") are distributed within 30 days after the
completion of each quarter, beginning with the first full fiscal quarter
following the Partnership's Closing. Each Distribution is described in a
statement sent to the Limited Partners.

Item 6.  Selected Financial Data.
---------------------------------

     Incorporated herein by reference to the section entitled "Selected
Financial Data" in the 1997 Annual Report.

Item 7.  Management's Discussion and Analysis of Financial Condition
--------------------------------------------------------------------
and Results of Operations.
--------------------------

     Incorporated herein by reference to the section entitled "Management's
Discussion and Analysis of Financial Condition and Results of Operations" in the
1997 Annual Report.

Item 8.  Financial Statements and Supplementary Data.
-----------------------------------------------------

     Incorporated herein by reference to the financial statements and
supplementary data included in the 1997 Annual Report.

Item 9.  Changes in and Disagreements with Accountants on Accounting
--------------------------------------------------------------------
and Financial Disclosure.
-------------------------
     None.

                                      - 7 -

<PAGE>

PART III

Item 10.  Directors and Executive Officers of the Partnership.
--------------------------------------------------------------

     (a-b) Identification of Directors and Executive Officers

     The Partnership has no Directors or Officers. As indicated in Item 1 of
this report, AFG Leasing VI Incorporated is the sole General Partner of the
Partnership. Under the Restated Agreement, as amended, the General Partner is
solely responsible for the operation of the Partnership's properties and the
Limited Partners have no right to participate in the control of such operations.
The names, titles and ages of the Directors and Executive Officers of the
General Partner as of March 15, 1998 are as follows:

DIRECTORS AND EXECUTIVE OFFICERS OF
THE GENERAL PARTNER (See Item 13)
-----------------------------------

<TABLE>
<CAPTION>
             Name                                 Title                            Age          Term
-----------------------------      --------------------------------------------   -----     ------------
<S>                                <C>                                              <C>         <C>
Geoffrey A. MacDonald              Chairman and a member of the                                  Until a
                                   Executive Committee of EFG                                   successor
                                   and President and a Director                                  is duly
                                   of the General Partner                            49         elected
                                                                                                   and
                                                                                                qualified
Gary D. Engle                      President and Chief Executive
                                   Officer and member of the
                                   Executive Committee of EFG                        49

Gary M. Romano                     Executive Vice President and Chief
                                   Operating Officer of EFG and
                                   Clerk of the General Partner                      38

James A. Coyne                     Executive Vice President of EFG                   37

Michael J. Butterfield             Vice President, Finance and Treasurer
                                   of EFG and Treasurer of the
                                   General Partner                                   38

James F. Livesey                   Vice President, Aircraft and Vessels
                                   of EFG                                            48

Sandra L. Simonsen                 Senior Vice President, Information Systems
                                   of EFG                                            47

Gail D. Ofgant                     Vice President, Lease Operations of EFG           32

</TABLE>

     (c) Identification of Certain Significant Persons

     None.

     (d) Family Relationship

     No family relationship exists among any of the foregoing Partners,
Directors or Executive Officers.


     (e) Business Experience

                                      - 8 -

<PAGE>

     Mr. MacDonald, age 49, is a co-founder, Chairman and a member of the
Executive Committee of EFG and President and a Director of the General Partner.
Mr. MacDonald was also a co-founder, Director and Senior Vice President of EFG's
predecessor corporation from 1980 to 1988. Mr. MacDonald is President of
American Finance Group Securities Corp. and a limited partner in Atlantic
Acquisition Limited Partnership ("AALP") and Old North Capital Limited
Partnership ("ONC"). Prior to co-founding EFG's predecessors, Mr. MacDonald held
various executive and management positions in the leasing and pharmaceutical
industries. Mr. MacDonald holds an M.B.A. from Boston College and a B.A. degree
from the University of Massachusetts (Amherst).

     Mr. Engle, age 49, is President and Chief Executive Officer and a member of
the Executive Committee of EFG and President of AFG Realty Corporation. Mr.
Engle is Vice President and a Director of certain of EFG's affiliates. On
December 16, 1994, Mr. Engle acquired control of EFG, the General Partner and
each of EFG's subsidiaries. Mr. Engle controls the general partner of AALP and
is a limited partner in AALP. Mr. Engle is also a limited partner in ONC. Mr.
Engle is also Chairman, Chief Executive Officer and a member of the Board of
Directors of Semele Group, Inc. ("Semele"). From 1987 to 1990, Mr. Engle was
a principal and co-founder of Cobb Partners Development, Inc., a real estate
and mortgage banking company. From 1980 to 1987, Mr. Engle was Senior Vice
President and Chief Financial Officer of Arvida Disney Company, a large scale
community development company owned by Walt Disney Company. Prior to 1980,
Mr. Engle served in various management consulting and institutional brokerage
capacities. Mr. Engle has an M.B.A. from Harvard University and a B.S. degree
from the University of Massachusetts (Amherst).

     Mr. Romano, age 38, is Executive Vice President and Chief Operating
Officer of EFG and certain of its affiliates and Clerk of the General
Partner. Mr. Romano is Vice President and Chief Financial Officer of Semele.
Mr. Romano joined EFG in November 1989 and was appointed Executive Vice
President and Chief Operating Officer in April 1996. Prior to joining EFG,
Mr. Romano was Assistant Controller for a privately-held real estate company
which he joined in 1987. Mr. Romano held audit staff and manager positions at
Ernst & Whinney (now Ernst & Young LLP) from 1982 to 1986. Mr. Romano is a
C.P.A. and holds a B.S. degree from Boston College.

     Mr. Coyne, age 37, is Executive Vice President of EFG and President,
Chief Operating Officer and a memeber of the Board of Directors of Semele.
Mr. Coyne joined EFG in 1989, remained until May 1993, and rejoined EFG in
November 1994. Mr. Coyne was appointed Executive Vice President of EFG in
September 1997. Mr. Coyne is a limited partner in AALP and ONC. From May 1993
through November 1994, he was with the Raymond Company, a private investment
firm, where he was responsible for financing corporate and real estate
acquisitions. From 1985 through 1989, Mr. Coyne was affiliated with a real
estate investment company and an equipment leasing company. Prior to 1985 he
was with the accounting firm of Ernst & Whinney (now Ernst & Young LLP). He
has a BS in Business Administration from John Carroll University, a Masters
Degree in Accounting from Case Western Reserve University and is a Certified
Public Accountant.

     Mr. Butterfield, age 38, joined EFG in June 1992 and became Vice President,
Finance and Treasurer of EFG and certain of its affiliates in April 1996 and is
Treasurer of the General Partner and Semele. Prior to joining EFG, Mr.
Butterfield was an Audit Manager with Ernst & Young LLP, which he joined in
1987. Mr. Butterfield was employed in public accounting and industry
positions in New Zealand and London (U.K.) prior to coming to the United
States in 1987. Mr. Butterfield attained his Associate Chartered Accountant
(A.C.A.) professional qualification in New Zealand and has completed his
C.P.A. requirements in the United States. He holds a Bachelor of Commerce
degree from the University of Otago, Dunedin, New Zealand.

     Mr. Livesey, age 48, is Vice President, Aircraft and Vessels, of EFG. Mr.
Livesey joined EFG in October, 1989, and was promoted to Vice President in
January 1992. Prior to joining EFG, Mr. Livesey held sales and marketing
positions with two privately-held equipment leasing firms. Mr. Livesey holds an
M.B.A. from Boston College and B.A. degree from Stonehill College.

     Ms. Simonsen, age 47, joined EFG in February 1990 and was promoted to
Senior Vice President, Information Systems of EFG in April 1996. Prior to
joining EFG, Ms. Simonsen was Vice President, Information Systems with Investors
Mortgage Insurance Company which she joined in 1973. Ms. Simonsen provided
systems consulting for a subsidiary of American International Group and authored
a software program published by IBM. Ms. Simonsen holds a B.A. degree from
Wilson College.

     Ms. Ofgant, age 32, is Vice President, Lease Operations of EFG and certain
of its affiliates. Ms. Ofgant joined EFG in June 1989, and was promoted to
Manager, Lease Operations in April 1994. In April 1996, Ms.

                                      -9-

<PAGE>

Ofgant was appointed Vice President, Lease Operations. Prior to joining EFG, Ms.
Ofgant was employed by Security Pacific National Trust Company. Ms. Ofgant holds
a B.S. degree in Finance from Providence College.

     (f) Involvement in Certain Legal Proceedings

     None.

     (g) Promoters and Control Persons

     See Item 10 (a-b) above.

Item 11.  Executive Compensation.
---------------------------------

     (a) Cash Compensation

     Currently, the Partnership has no employees. However, under the terms of
the Restated Agreement, as amended, the Partnership is obligated to pay all
costs of personnel employed full or part-time by the Partnership, including
officers or employees of the General Partner or its Affiliates. There is no plan
at the present time to make any officers or employees of the General Partner or
its Affiliates employees of the Partnership. The Partnership has not paid and
does not propose to pay any options, warrants or rights to the officers or
employees of the General Partner or its Affiliates.

     (b) Compensation Pursuant to Plans

     None.

     (c) Other Compensation

     Although the Partnership has no employees, as discussed in Item 11(a),
pursuant to Section 9.4(c) of the Restated Agreement, as amended, the
Partnership incurs a monthly charge for personnel costs of the Manager for
persons engaged in providing administrative services to the Partnership. A
description of the remuneration paid by the Partnership to the Manager for such
services is included in Item 13, herein and in Note 4 to the financial
statements included in Item 14, herein.

     (d) Compensation of Directors

     None.

     (e) Termination of Employment and Change of Control Arrangement

     There exists no remuneration plan or arrangement with the General Partner
or its Affiliates which results or may result from their resignation, retirement
or any other termination.

Item 12. Security Ownership of Certain Beneficial Owners and Management.
------------------------------------------------------------------------

     By virtue of its organization as a limited partnership, the Partnership has
outstanding no securities possessing traditional voting rights. However, as
provided in Section 10.2(a) of the Restated Agreement, as amended (subject to
Sections 10.2(b) and 10.3), a majority interest of the Limited Partners have
voting rights with respect to:

     1. Amendment of the Restated Agreement;

     2. Termination of the Partnership;

     3. Removal of the General Partner; and

                                      -10-

<PAGE>

     4.   Approval or disapproval of the sale of all, or substantially all, of
          the assets of the Partnership (except in the orderly liquidation of
          the Partnership upon its termination and dissolution).

     No person or group is known by the General Partner to own beneficially more
than 5% of the Partnership's 286,711 outstanding Units as of March 1, 1998.

     The ownership and organization of EFG is described in Item 1 of this
report.

Item 13.  Certain Relationships and Related Transactions.
---------------------------------------------------------

     The General Partner of the Partnership is AFG Leasing VI Incorporated, an
affiliate of EFG.

     (a) Transactions with Management and Others

     All operating expenses incurred by the Partnership are paid by EFG on
behalf of the Partnership and EFG is reimbursed at its actual cost for such
expenditures. Fees and other costs incurred during the years ended December
31, 1997, 1996 and 1995, which were paid or accrued by the Partnership to EFG
or its Affiliates, are as follows:

<TABLE>
<CAPTION>

                                                 1997              1996               1995
                                              -----------       -----------         ----------

<S>                                           <C>               <C>                <C>
Equipment management fees                     $    28,733       $    34,740        $    59,401
Administrative charges                             53,604            31,872             14,172
Reimbursable operating
     expenses due to third parties                 61,100            46,947             53,192
                                              -----------       -----------         ----------


                           Total              $   143,437       $   113,559         $  126,765
                                              -----------       -----------         ----------
                                              -----------       -----------         ----------

</TABLE>

     As provided under the terms of the Management Agreement, EFG is compensated
for its services to the Partnership. Such services include all aspects of
acquisition, management and sale of equipment. For acquisition services, EFG is
compensated by an amount equal to 2.23% of Equipment Base Price paid by the
Partnership. For management services, EFG is compensated by an amount equal to
the lesser of (i) 5% of gross operating lease rental revenue and 2% of gross
full payout lease rental revenue received by the Partnership or (ii) fees which
the General Partner reasonably believes to be competitive for similar services
for similar equipment. Both of these fees are subject to certain limitations
defined in the Management Agreement. Compensation to EFG for services connected
to the sale of equipment is calculated as the lesser of (i) 3% of gross sale
proceeds or (ii) one-half of reasonable brokerage fees otherwise payable under
arm's length circumstances. Payment of the remarketing fee is subordinated to
Payout and is subject to certain limitations defined in the Management
Agreement.

     Administrative charges represent amounts owed to EFG, pursuant to Section
9.4(c) of the Restated Agreement, as amended, for persons employed by EFG who
are engaged in providing administrative services to the Partnership.
Reimbursable operating expenses due to third parties represent costs paid by EFG
on behalf of the Partnership which are reimbursed to EFG.

     All equipment was purchased from EFG, one of its affiliates, including
other equipment leasing programs sponsored by EFG, or from third-party sellers.
The Partnership's Purchase Price is determined by the method described in Note 2
to the financial statements included in Item 14, herein.

     All rents and proceeds from the sale of equipment are paid directly to
either EFG or to a lender. EFG temporarily deposits collected funds in a
separate interest-bearing escrow account prior to remittance to the Partnership.
At December 31, 1997, the Partnership was owed $76,072 by EFG for such funds and
the interest thereon. These funds were remitted to the Partnership in January
1998.

     Atlantic Acquisition Limited Partnership ("AALP") and Old North Capital
Limited Partnership ("ONC"), both Massachusetts limited partnerships formed in
1995 owned and controlled by certain principals of EFG, own 11,442 Units or
3.99% and 990 Units or 0.35% of the total outstanding units of the Partnership,
respectively. EFG

                                      -11-

<PAGE>

owns a Class D interest in AALP and a 49% limited partnership interest in ONC,
both of which it acquired in December 1996.

     (b) Certain Business Relationships

     None.

     (c) Indebtedness of Management to the Partnership

     None.

     (d) Transactions with Promoters

     See Item 13(a) above.

                                      -12-

<PAGE>

PART IV

Item 14.  Exhibits, Financial Statement Schedules and Reports on Form 8-K.
--------------------------------------------------------------------------

    (a) Documents filed as part of this report:

<TABLE>
<CAPTION>

               <S>                                                                                   <C>

        (1)    Financial Statements:

               Report of Independent Auditors........................................................*

               Statement of Financial Position at December 31, 1997 and
               1996..................................................................................*

               Statement of Operations for the years ended December 31, 1997,
               1996 and 1995.........................................................................*

               Statement of Changes in Partners' Capital for the years ended
               December 31, 1997, 1996 and 1995......................................................*

               Statement of Cash Flows for the years ended December 31, 1997,
               1996 and 1995.........................................................................*

               Notes to the Financial Statements.....................................................*

       (2)     Financial Statement Schedules:

               None Required.

       (3)     Exhibits:

               Except as set forth below, all Exhibits to Form 10-K, as set
               forth in Item 601 of Regulation S-K, are not applicable.

</TABLE>

<TABLE>
<CAPTION>

  Exhibit
   Number
 ----------
<S>          <C>
     4         Amended and Restated Agreement and Certificate of Limited
               Partnership included as Exhibit A to the Prospectus which is
               included in Registration Statement on Form S-1 (No. 33-35148).

    13         The 1997 Annual Report to security holders, a copy of which is
               furnished for the information of the Securities and Exchange
               Commission. Such Report, except for those portions thereof which
               are incorporated herein by reference, is not deemed "filed" with
               the Commission.

    23         Consent of Independent Auditors.

    99 (a)     Lease agreement with Horizon Air Industries, Inc. was filed
               in the Registrant's Annual Report on Form 10-K for the year ended
               December 31, 1991 as Exhibit 28 (a) and is incorporated herein by
               reference.

</TABLE>

*    Incorporated herein by reference to the appropriate portion of the 1997
     Annual Report to security holders for the year ended December 31, 1997 (see
     Part II).

                                      -13-


<PAGE>

<TABLE>
<CAPTION>

     Exhibit
      Number
    ---------
<S>            <C>
    99 (b)     Lease agreement with Fred Meyer, Inc. was filed in the
               Registrant's Annual Report on Form 10-K for the year ended
               December 31, 1991 as Exhibit 28 (b) and is incorporated herein by
               reference.

    99 (c)     Lease agreement with Cyclops Industries, Inc. was filed in
               the Registrant's Annual Report on Form 10-K for the year ended
               December 31, 1991 as Exhibit 28 (c) and is incorporated herein by
               reference.

    99 (d)     Lease agreement with General Motors Corporation was filed in
               the Registrant's Annual Report on Form 10-K for the year ended
               December 31, 1995 as Exhibit 99 (d) and is incorporated herein by
               reference.

    99 (e)      Lease agreement with Awin Leasing Company, Inc. is filed in
               the Registrant's Annual Report on Form 10-K for the year ended
               December 31, 1997 and is included herein.

</TABLE>

     (b) Reports on Form 8-K

     None.

                                      -14-

<PAGE>

                                   SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, this
report has been signed below on behalf of the registrant and in the capacity and
on the date indicated.


          AMERICAN INCOME FUND I-B, a Massachusetts Limited Partnership


                       By: AFG Leasing VI Incorporated,
                       a Massachusetts corporation and the
                       General Partner of the Registrant.

<TABLE>
<CAPTION>


<S>                                                                    <C>
By:  /s/   Geoffrey A. MacDonald                                       By: /s/   Gary D. Engle
   -----------------------------------                                    ------------------------------
Geoffrey A. MacDonald                                                  Gary D. Engle
Chairman and a member of the                                           President and Chief Executive
Executive Committee of EFG and                                         Officer and a memberof the
President and a Director of the                                        Executive Committee ofEFG
General Partner                                                        (Principal ExecutiveOfficer)


Date:     March 31, 1998                                                  Date:     March 31, 1998
     ---------------------------------                                         -----------------------------


By:  /s/   Gary M. Romano                                                 By: /s/   Michael J. Butterfield
   -----------------------------------                                       -------------------------------
Gary M. Romano                                                            Michael J. Butterfield
Executive Vice President and Chief                                        Vice President,Finance and
Operating Officer of EFG and Clerk                                        Treasurer of EFG and Treasurer
of the General Partner                                                    of the General Partner
(Principal Financial Officer)                                             (Principal Accounting Officer)


Date:     March 31, 1998                                                  Date:     March 31, 1998
     ---------------------------------                                         -----------------------------

</TABLE>

                                      -15-