2025 Tax Year Calendar. Here’s an updated list of the key dates for the 2025/26 tax year, with updates on mtd and other important deadlines for your accounting diary. Tax day for the year 2025 is celebrated/ observed on tuesday, april 15.
The pennsylvania department of revenue (dor) released motor fuel tax rates for 2025, which became effective as of jan. 8, that they would accept refunds for the 2023 year starting jan.