Filing on time is essential to avoid penalties and interest on any owed taxes. Check here for the obligations and/or filings that must be made during the month of May.
- May 15th, 2025 – Deadline to FileExempt Organization Tax Returns (Forms 990, 990-T, 990-N, 990EZ).
- May 15th, 2025 – Deadline to File Form 8868 (Application for Extension of Time To File an Exempt Organization Return).
- May 25th, 2025 – Due Date for Monthly Filers with the WA Department of Revenue for April 2025 Excise Tax Return.