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Dates & Deadlines (2026)
2026 FEDERAL Estimated Tax Payment Due Dates
(For Tax Year 2026 Estimates)
- 1st Quarter Payment Due – April 15, 2026
- 2nd Quarter Payment Due – June 15, 2026
- 3rd Quarter Payment Due – September 15, 2026
- 4th Quarter Payment Due – January 15, 2027
2026 Ohio Estimated Tax Payment Due Dates
(For Tax Year 2026 Estimates)
- 1st Quarter Payment Due – April 15, 2026
- 2nd Quarter Payment Due – June 15, 2026
- 3rd Quarter Payment Due – September 15, 2026
- 4th Quarter Payment Due – January 15, 2027
Key Filing Season Dates (2026 Filing Season – For 2025 Tax Returns)
These are the important dates for filing 2025 tax returns in 2026:
- January 15, 2026 – Due date for Tax Year 2025 Fourth Quarter Estimated Tax Payment
- Late January 2026 (Exact date announced by IRS) – IRS begins accepting and processing 2025 Individual Tax Returns
- January 31, 2026 – Businesses must issue: W-2s to employees; 1099-NEC and most 1099 forms to recipients
- March 16, 2026 (March 15 falls on a Sunday in 2026, so deadline moves to Monday) – Due date for: Partnership (Form 1065) 2025 Tax Returns; S-Corporation (Form 1120-S) 2025 Tax Returns; Deadline to request extension for Partnerships and S-Corps
- April 15, 2026 – 2025 Individual Tax Returns Due (Form 1040); IRA Contribution Deadline for 2025; First Quarter 2026 Estimated Tax Payments Due; C-Corporation (Form 1120) 2025 Tax Returns Due; Deadline to file for extension and pay tax owed
- October 15, 2026 – Final deadline to file 2025 Individual Tax Returns for those who requested an extension.
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