Estimated Tax Payments Due Sept. 15
- Viktoriya Barsukova, EA, MBA
- Sep 6
- 1 min read

September isn’t just the start of cooler weather—it’s also the deadline for third-quarter estimated tax payments. The IRS requires these payments by September 15, 2025.
Who should pay?
You may need to make an estimated payment if you:
Expect to owe $1,000 or more when filing your return, and
Your withholding and credits won’t cover at least 90% of this year’s tax or 100% of last year’s tax.
This often applies to:
Gig workers and freelancers
Small business owners and partners
Investors
Retirees with significant non-wage income
Many people use last year’s tax as a safe guide, but if your 2025 income is higher, adjust to avoid penalties.
How to pay:
IRS Direct Pay or EFTPS – fastest and most reliable
Credit/debit cards (note: processing fees may apply)
Paper check (still accepted, but slower)
Special note: Taxpayers in federally declared disaster areas may qualify for extra time. Check the IRS “Around the Nation Disaster Relief” page for the latest updates.
For a helpful overview, see this quick explainer:https://www.youtube.com/watch?v=eMxTgPtpvmE
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