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                                                                   EXHIBIT 10.26


                      EIGHTH AMENDMENT TO CREDIT AGREEMENT


         THIS EIGHTH AMENDMENT TO CREDIT AGREEMENT (this "Amendment") is entered
into as of March 19, 2003, among PMC CAPITAL, INC., a Florida corporation
("Borrower"), certain Lenders, and BANK ONE, NA, with its main office in
Chicago, Illinois, successor by merger to Bank One, Texas, N.A. ("Administrative
Agent").

                             PRELIMINARY STATEMENT:

         Borrower, Administrative Agent and Lenders are party to that certain
Credit Agreement (as renewed, extended, amended and restated, the "Credit
Agreement") dated as of March 22, 2000, pursuant to which the Lenders have made
and may hereafter make loans to Borrower. Borrower, Administrative Agent and
Lenders have agreed to amend the Credit Agreement in order to (i) provide for a
temporary increase in the amount of the Commitment and (ii) extend the maturity
of the Revolving Facility.

         Accordingly, for adequate and sufficient consideration, the receipt of
which is hereby acknowledged, Borrower, Administrative Agent and Lenders agree
as follows:

1. Defined Terms; References. Unless otherwise stated in this Amendment (a)
terms defined in the Credit Agreement have the same meanings when used in this
Amendment and (b) references to "Sections," "Schedules" and "Exhibits" are to
sections, schedules and exhibits to the Credit Agreement.

2. Amendments.

         (a) The defined term "Commitment" in Section 1.1 of the Credit
Agreement is amended in its entirety as follows:

                  "Commitment" means an amount (subject to reduction or
                  cancellation as herein provided) equal to (a) $15,000,000 for
                  the period between March 19, 2003, and the Commitment
                  Reduction Date, and (b) $10,000,000 at any time thereafter.
                  For purposes of this paragraph, the term "Commitment Reduction
                  Date" means the earlier of (i) the closing date of the first
                  Asset Securitization to be completed after March 19, 2003, and
                  (ii) June 30, 2003.

         (b) The defined term "Stated Termination Date" in Section 1.1 of the
Credit Agreement is amended in its entirety as follows:

                  "Stated Termination Date" means May 31, 2004.

         (c) Schedule 2 to the Credit Agreement is hereby amended in its
entirety as set forth on Annex A attached hereto.

3. Conditions Precedent. Notwithstanding any contrary provisions, the foregoing
paragraphs in this Amendment are not effective unless and until (a) the
representations and


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warranties in this Amendment are true and correct, and (b) Administrative Agent
receives counterparts of this Amendment executed by each party named below.

4. Ratifications. This Amendment modifies and supersedes all inconsistent terms
and provisions of the Credit Documents, and except as expressly modified and
superseded by this Amendment, the Credit Documents are ratified and confirmed
and continue in full force and effect. Borrower, Administrative Agent and
Lenders agree that the Credit Documents, as amended by this Amendment, continue
to be legal, valid, binding and enforceable in accordance with their respective
terms.

5. Representations and Warranties. Borrower hereby represents and warrants to
Administrative Agent and Lenders that (a) this Amendment and any Credit
Documents to be delivered under this Amendment have been duly executed and
delivered by Borrower, (b) no action of, or filing with, any Governmental
Authority is required to authorize, or is otherwise required in connection with,
the execution, delivery, and performance by Borrower of this Amendment and any
Credit Document to be delivered under this Amendment, (c) this Amendment and any
Credit Documents to be delivered under this Amendment are valid and binding upon
Borrower and are enforceable against Borrower in accordance with their
respective terms, except as limited by any applicable Debtor Relief Laws, (d)
the execution, delivery and performance by Borrower of this Amendment and any
Credit Documents to be delivered under this Amendment do not require the consent
of any other Person and do not and will not constitute a violation of any
Governmental Requirements, agreements or understandings to which Borrower is a
party or by which Borrower is bound, (e) the representations and warranties
contained in the Credit Agreement, as amended by this Amendment, and any other
Credit Document are true and correct in all material respects as of the date of
this Amendment, and (f) as of the date of this Amendment, no Event of Default or
Potential Default exists or is imminent.

6. References. All references in the Credit Documents to the "Credit Agreement"
refer to the Credit Agreement as amended by this Amendment. This Amendment is a
"Credit Document" referred to in the Credit Agreement and the provisions
relating to Credit Documents in the Credit Agreement are incorporated by
reference, the same as if set forth verbatim in this Amendment.

7. Counterparts. This Amendment may be executed in any number of counterparts
with the same effect as if all signatories had signed the same document.

8. Parties Bound. This Amendment binds and inures to the benefit of Borrower,
Administrative Agent and each Lender, and, subject to Section 13 of the Credit
Agreement, their respective successors and assigns.

9. Entirety. THIS AMENDMENT, THE CREDIT AGREEMENT AS AMENDED BY THIS AMENDMENT,
AND THE OTHER CREDIT DOCUMENTS REPRESENT THE FINAL AGREEMENT BETWEEN THE PARTIES
FOR THE TRANSACTIONS THEREIN, AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR,
CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENT

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BETWEEN THE PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

         EXECUTED as of the date first stated above.

                                     BANK ONE, NA,
                                     as Administrative Agent and a Lender


                                     By: /s/ JOHN M. CURTIN
                                         ---------------------------------------
                                         John M. Curtin,  Vice President


                                     PMC CAPITAL, INC.,
                                     as Borrower


                                     By: /s/ JAN F. SALIT
                                         ---------------------------------------
                                     Name: Jan F. Salit
                                           -------------------------------------
                                     Title: Executive Vice President
                                            ------------------------------------





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<PAGE>


                                     ANNEX A


                                   SCHEDULE 2



<Table>
<Caption>
                                                                      COMMITMENT
     NAME AND ADDRESS OF LENDER            REVOLVING FACILITY         PERCENTAGE
-----------------------------------   -----------------------------   ----------
<S>                                   <C>                             <C>

Bank One, NA
1717 Main Street, 3rd Floor
Dallas, TX 75201                          $15,000,000 (subject to      100.000%
Attention:  Bradley C. Peters, Vice    reduction or cancellation as
President                                 provided in the Credit
Tel 214/290-4146                                Agreement)
Fax 214/290-2305

Total                                           $15,000,000            100.000%
</Table>


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