Where to Mail Federal Tax Forms and Information: Ways to Make Federal Payments Where to Mail Federal Forms Ways to Make Indiana Payments Where to Mail Indiana Forms REFUNDS & AMENDED:DEPARTMENT OF THE TREASURYINTERNAL REVENUE SERVICEFRESNO, CA 93888-0002 ESTIMATED PAYMENTS:INTERNAL REVENUE SERVICEPO BOX 802502CINCINNATI, OH 45280-2502 BALANCE DUEE-FILE AND PAPER PAYMENTS:INTERNAL REVENUE SERVICEPO BOX 802501CINCINNATI, OH 45280-2501 FRAUD SUSPICION:INTERNAL REVENUE SERVICEFRESNO, CA 93888Use form 3949A orsend letter with info BUSINESS RETURNS:DEPARTMENT OF THE TREASURYINTERNAL REVENUE SERVICECINCINNATI, OH 45999-0011 Go Back to Filings and Payments