Tax Deadline Calendar
Every IRS deadline in chronological order. Click any date to see who it affects, what to prepare, and the cost of being late.
IRS Deadlines Throughout the Year
Every deadline below carries penalties if missed. Click any item to expand the full breakdown.
Overview
Final deadline for S-Corps and Partnerships that filed Form 7004 in March. The Q3 estimated tax payment is also due today for individuals with pass-through income.
Who This Affects
- S-Corps and partnerships that filed an extension in March
- All individuals making Q3 estimated payments
- Trusts and estates on extension
- Businesses that needed more time to finalize K-1s
What to Prepare
- Final reconciled books for the entity
- All K-1s from underlying investments
- Depreciation and Section 179 elections
- Q3 estimated tax calculation for personal return
Cost of Missing This Deadline
The $245 per month, per partner penalty continues accruing from the original March deadline. A 6-month delay on a 4-partner LLC costs $5,880. Repeated late filings can trigger audit scrutiny and threaten S-Corp election status.
We track every deadline and send reminders 30, 14, and 3 days before.
Do Not Want to Track These Yourself?
When you partner with Fiscal Integrity Group, we handle every deadline, extension, and estimated payment for you. You run your business; we manage the calendar.
Tax Deadline Alerts
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