2025 Tax Season Start Date And End Date. This article will cover important key dates for the 2025 tax season, including the tax filing start date, tax deadline, extension filing deadline, extended deadline, estimated tax. The last day to timely file your taxes in 2025 will be april.
Individual income tax for sole proprietors a. January marks the start of the 2025 tax filing season, but there are also a few tax deadlines during the month.