For tax year 2025, quarterly estimated tax payments are due on the following dates:
- 1st Quarter: April 15, 2025 (for income earned January-March)
- 2nd Quarter: June 16, 2025 (for income earned April-May)
- 3rd Quarter: September 15, 2025 (for income earned June-August)
- 4th Quarter: January 15, 2026 (for income earned September-December)
These payments are required for self-employed individuals, freelancers, and those with significant investment income. If any due date falls on a weekend or holiday, the deadline moves to the next business day. Failure to make timely estimated tax payments can result in penalties.