Important Tax Deadlines
Stay ahead of every IRS deadline. Bookmark this page so you never miss a filing date — and let Alpha CPA handle the rest.
Q4 2025 Estimated Tax Payment
Final quarterly estimated tax payment for the 2025 tax year.
W-2 & 1099 Forms Due
Employers must send W-2s to employees and 1099-NEC to contractors.
S-Corp & Partnership Returns
Forms 1120-S and 1065 due (or file an extension).
Individual & C-Corp Returns
Form 1040 and 1120 due. Also Q1 estimated payment & IRA contributions.
Q2 Estimated Tax Payment
Second quarterly estimated tax payment for 2026.
Q3 Estimated Tax + Extended Business Returns
Q3 estimated payment; extended S-Corp & Partnership returns due.
Extended Individual Returns
Final deadline for individual returns filed on extension.
Year-End Tax Planning
Last day for many deductions and required minimum distributions (RMDs).
Don't risk a late-filing penalty
Our CPAs track every deadline for you and file on time, every time. Get started with a free consultation.
Book a Free ConsultationDates are based on IRS federal deadlines and may shift for weekends/holidays. State deadlines may vary. Always confirm with your CPA.