Publications

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Tax Calendar

IRS

Where's My Income Tax Refund?

IRS

Audit Technical Guides

IRS

Internal Revenue Code

Internal Revenue Service

Treasury Regulations

Internal Revenue Service

Pennsylvania Code and Bulletin:

PENNSYLVANIA DEPARTMENT OF REVENUE

PA Personal Income Tax Guide

Pennsylvania Department of Revenue

Philadelphia Regulations for Business Income & Receipt Tax

Philadelphia Use & Occupancy Tax Regulations

Philadelphia Law Department Directory

City of Philadelphia