As the 2025 tax season approaches, understanding the critical deadlines and available resources can help taxpayers in the United States efficiently manage their tax obligations.

The Internal Revenue Service expects 140 million people to file tax year 2024 returns ahead of the April 15 deadline. More than half of all filers are expected to be filed with the help of a professional,

Here's a look at key dates in the tax filing season, including deadlines to file, when to request extensions and how long until you get your refund.