January 15, 2026
Tax Season 2026: Key Dates and Events
The 2026 tax filing season officially began on January 26, when the Internal Revenue Service (IRS) opened the filing window. To help our clients stay ahead, we’ve compiled a month-by-month guide below with the key tax dates and events for 2026. January 2026 1/15/26 – Q4 2025 estimated tax payments due for both individual filers…