Don’t Miss Your 3rd Quarter Estimated Tax Payment Deadline

Written By Tracy Mathews

For self-employed individuals, freelancers, and small business owners who rely on income not subject to withholding—like investments, side gigs, or rental income—the third-quarter estimated tax payment for 2025 is due on September 15.

If you expect to owe $1,000 or more when you file, the IRS requires this timely payment—pay-as-you-go tax rules apply. Underpaying could mean penalties and interest you’d rather avoid.

Here’s how to prepare:

  • Use IRS Form 1040-ES to estimate your taxes based on your year‑to‑date income and deductions.

  • Pay the exact amount by September 15 to stay compliant and penalty‑free.

  • Use tools like IRS Direct Pay or EFTPS to schedule or make payments securely.

Planning is everything. If business income has risen (or dropped), adjust your estimated tax accordingly. Need help getting the numbers right? That’s where Tax Pros HQ comes in. We make sure you're proactive, compliant, and penalty-free.

Tracy Mathews
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