Task Sheet for Monthly Tax Payers (Labor Employer)

Due Date Task Date Completed Notes

January 15th December Railroad Retirement Tax and 

Federal Income Tax payments due 

(CT-1: monthly schedule depositor).

January 31st Last day to furnish W-2 (Copies B, C, 

and 2) to each person who was your 

employee during the current year.

_______________________________

4

th quarter OE-1/OE-1a due.

Mail to International Union Office.

_______________________________

Form 941 for quarter ending December 

31st is due Mail to IRS. *

_______________________________

Form DC-1 due. Mail to RRB.

February 15th January Railroad Retirement Tax and 

Federal Income Tax payments due 

(CT-1: monthly schedule depositor).

February 28

th CT-1 due, mail to Department of 

Treasury, Internal Revenue Service, 

Cincinnati, OH 45999-0007.

_______________________________

If submitted to the Social Security 

Administration via paper, mail Copy A 

of W-2 and W-3 to

Social Security Administration

Data Operations Center

Wilkes-Barre, PA 18769-0001 

NOTE: If you use “Certified Mail” to 

file, change the ZIP code to “18769-

0002”. If you use an IRS-approved 

delivery service, add “Attn: W-2 

Process, 1150 E. Mountain Dr.” to the 

address and change the ZIP code to 

“18702-7997”.

March 15th February Railroad Retirement Tax and 

Federal Income Tax payments due 

(CT-1: monthly schedule depositor).

March 31st If filing electronically, due date of 

submission of W-2 and W-3 to the 

Social Security Administration.
Task Sheet for Monthly Tax Payers (Labor Employer)

Due Date Task Date Completed Notes

April 15th February Railroad Retirement Tax and 

Federal Income Tax payments due 

(CT-1: monthly schedule depositor).

April 30th 1st quarter OE-1/OE-1a due.

Mail to International Union Office.

_______________________________

Form 941 for quarter ending March 31st

is due. Mail to IRS. *

_______________________________

Form DC-1 due. Mail to RRB.

May 15th April Railroad Retirement Tax and 

Federal Income Tax payments due 

(CT-1: monthly schedule depositor).

June 15th May Railroad Retirement Tax and 

Federal Income Tax payments due

(CT-1: monthly schedule depositor).

July 15th June Railroad Retirement Tax and 

Federal Income Tax payments due 

(CT-1: monthly schedule depositor).

July 31st 2nd quarter OE-1/OE-1a due.

Mail to International Union Office.

_______________________________

Form 941 for quarter ending June 30th is 

due. Mail to IRS. *

_______________________________

Form DC-1 due. Mail to RRB.

August 15th July Railroad Retirement Tax and 

Federal Income Tax payments due 

(CT-1: monthly schedule depositor).

September 15th August Railroad Retirement Tax and 

Federal Income Tax payments due 

(CT-1: monthly schedule depositor).

October 15th September Railroad Retirement Tax and 

Federal Income Tax payments due 

(CT-1: monthly schedule depositor).
Task Sheet for Monthly Tax Payers (Labor Employer)

Due Date Task Date Completed Notes

October 31st 3

rd quarter OE-1/OE-1a due.

Mail to International Union Office.

_______________________________

Form 941 for quarter ending September 

30th is due. Mail to IRS. *

_______________________________

Form DC-1 due. Mail to RRB.

November 15th October Railroad Retirement Tax and 

Federal Income Tax payments due 

(CT-1: monthly schedule depositor).

December15th November Railroad Retirement Tax and 

Federal Income Tax payments due 

(CT-1: monthly schedule depositor).

December 31st Obtain W-2, W-3, and CT-1 if you have 

not received the forms and are filing via 

paper.

 Please note if the due date is on the weekend or holiday, mail paperwork before the due date.

* If you are not using e-file and EFTPS for Form 941, where you file depends upon whether you include a 

payment.

If you are in... Without a payment... With a payment...

Connecticut, Delaware, District of 

Columbia, Florida, Georgia, Illinois, 

Indiana, Kentucky, Maine, Maryland, 

Massachusetts, Michigan, New 

Hampshire, New Jersey, New York, 

North Carolina, Ohio, Pennsylvania, 

Rhode Island, South Carolina, 

Tennessee, Vermont, Virginia, West, 

Virginia, Wisconsin

Department of the Treasury

Internal Revenue Service

Cincinnati, OH 45999-0005

Internal Revenue Service

P. O. Box 804522

Cincinnati, OH 45280-4522

Alabama, Alaska, Arizona, Arkansas, 

California, Colorado, Hawaii, Idaho, 

Iowa, Kansas, Louisiana, Minnesota, 

Mississippi, Missouri, Montana, 

Nebraska, Nevada, New Mexico, North 

Dakota, Oklahoma, Oregon, South 

Dakota, Texas, Utah, Washington, 

Wyoming

Department of the Treasury

Internal Revenue Service

Ogden, UT 84201-0005

Internal Revenue Service

P. O. Box 37941

Hartford, CT 06176-7941