Calculator

Projected Annual Income

Revenue minus business expenses.

Includes both Income Tax and SE Tax. Safe standard is 25% - 30%.

🧮 Help Me Estimate My Tax Rate ▼

Your Estimated Payments

Total Estimated Tax for Year: $0

You should pay the following amount 4 times a year:

Quarterly Payment Due: $0

IRS Payment Deadlines

  • Q1: April 15, 2026
  • Q2: June 15, 2026
  • Q3: September 15, 2026
  • Q4: January 15, 2027

What this calculator includes

  • Total Estimated Tax: A straightforward multiplication of your expected net profit and your estimated effective tax rate.
  • Quarterly Payment: The total estimated tax divided evenly into 4 installments.
  • Tax Rate Helper: An optional tool that combines your federal bracket, state rate, and an average self-employment tax rate to give you a blended effective tax rate estimate.

What this calculator does not include

  • Exact Income Brackets: Because income taxes are progressive, applying a flat "bracket" rate slightly overestimates your liability (which is generally a good thing for avoiding penalties).
  • Spousal Income: If you file jointly, your spouse's W-2 income and withholdings dramatically affect your final tax liability and whether you actually need to make quarterly payments.
  • Specific Deductions: Standard deduction, QBI deduction, and itemized deductions are not factored in.

How to use the result

Use the Quarterly Payment Due number as a baseline to set aside money in a dedicated business tax savings account. When the IRS deadlines arrive (April 15, June 15, Sept 15, Jan 15), remit this amount to the IRS to stay in compliance with the "safe harbor" rules and avoid underpayment penalties.

Disclaimer

This tool is for educational estimates only. Your true tax liability depends on your total household income, deductions, and state tax rules. For precision, consult a licensed CPA or use IRS Form 1040-ES.