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Municipal and School Earned Income Tax Office

Municipal and School Earned Income Tax OfficeMunicipal and School Earned Income Tax OfficeMunicipal and School Earned Income Tax Office

Municipal and School Earned Income Tax Office

Municipal and School Earned Income Tax OfficeMunicipal and School Earned Income Tax OfficeMunicipal and School Earned Income Tax Office
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Keystone Collections Group

PO Boxes:

Individual Final Tax Return-  Refund

Use if requesting a refund

PO Box 509


Individual Final Tax Return-Payment Due

Use if return is sent with payment

PO Box 529


Individual Final Tax Return

Use if no payment/ no refund

PO Box 549


Tax Return Supporting Documentation

If filed separately from tax return

PO Box 506 


Individual Quarterly Estimates

PO Box 539 


Late-Filed Individual Tax Return

PO Box 504


Delinquent Earned Income Tax

PO Box 499


Employer Withholding Tax

PO Box 559


Employer Compliance

PO Box 506

546 Wendel Road, Irwin, Pennsylvania 15642, United States

(724) 978-0300 (For individual taxpayers) (724) 978-0328 (For employers)

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