Deadlines are sneaky. You’ll be launching, fundraising, onboarding, and suddenly the IRS sends a letter. This calendar keeps you ahead of every important federal and state deadline.
| Due Date | Form / Filing | Who It Applies To |
|---|---|---|
| Jan 15 | 1040-ES (Q4 2024) | If MRR ≥ $500 or solo founder with pass-through income |
| Jan 31 | W-2 | If you have employees |
| Jan 31 | 1099-NEC | If you paid ≥ $600 to any contractor |
| Jan 31 | 941 (Q4) | If you have payroll/employees |
| Jan 31 | 940 | If you paid ≥ $1,500 in wages (FUTA) |
| Feb 28 | 1096 | If you filed 1099s on paper |
| Mar 1 | Delaware Franchise Tax + Annual Report | All Delaware C-Corps |
| Mar 21 | BOIR (Beneficial Ownership Info Report) | For entities formed before Jan 1, 2024 under CTA. Foreign-owned businesses must report beneficial owners to FinCEN. Entities formed in 2024 have 90 days from formation. Entities formed after March 21, 2025 have 30 days to file. |
| Mar 15 | IRS Form 1120 | All calendar-year C-Corps |
| Mar 15 | IRS Form 5472 | If any founder is foreign (25%+ ownership) |
| Apr 15 | 1040-ES (Q1) | If MRR ≥ $500 |
| Apr 30 | 941 (Q1) | If you have payroll |
| Jun 17 | 1040-ES (Q2) | If MRR ≥ $500 |
| Jul 31 | 941 (Q2) | If you have payroll |
| Sep 15 | 1040-ES (Q3) | If MRR ≥ $500 |
| Oct 15 | 1120 + 5472 (if extended via Form 7004) | If you filed for a 6-month extension |
| Oct 31 | 941 (Q3) | If you have payroll |
| Jan 15, 2026 | 1040-ES (Q4) | If MRR ≥ $500 |
Use Google Calendar + TaxHero’s reminders together
File Form 7004 early (takes pressure off April)
If unsure about W-2 or 1099, file something and fix it later
Delaware filings can be done in 10 minutes if you have your EIN
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