Estimate Your Quarterly Tax Payments in Minutes
Stop guessing how much to set aside. Our FREE Quarterly Tax Calculator does the math so you can avoid underpayment penalties and plan with confidence.
Get Your Free Calculator
Enter your details for instant access.
What's Inside the Calculator
A complete tax estimation toolkit built in Google Sheets — no software to install, no complicated setup.
Tax Calculator
Enter your income and filing status. The sheet auto-calculates your SE tax, income tax, and recommended quarterly payment.
Payment Schedule
See all 4 quarterly due dates with the exact amount due for each. Includes a "Paid?" tracker so you never miss a deadline.
Tax Brackets Reference
A color-coded table of all 2026 federal income tax brackets for Single, MFJ, MFS, and Head of Household filers.
Deduction Tracker
Track 15 categories of deductible expenses by quarter. Annual totals feed directly into your tax estimate.
How It Works
Get your estimated quarterly payment in 4 simple steps.
Download the Sheet
Enter your name and email above to get instant access to the Google Sheet.
Enter Your Income
Type your estimated annual gross income and select your filing status.
Review Your Estimate
The calculator auto-generates your SE tax, income tax, and quarterly payment amount.
Pay on Time
Follow the payment schedule to submit your quarterly payments and avoid IRS penalties.
Why You Need This Calculator
Quarterly taxes are one of the biggest pain points for the self-employed. This tool makes it manageable.
Avoid Penalties
The IRS charges underpayment penalties if you don't pay enough throughout the year. This calculator helps you stay compliant and penalty-free.
Plan with Clarity
Know exactly how much to set aside each quarter so there are no surprises. See your effective tax rate and take-home pay at a glance.
Maximize Deductions
The built-in deduction tracker helps you capture every write-off throughout the year, reducing your overall tax burden.
Ready to Take Control of Your Quarterly Taxes?
Download the free calculator now and stop guessing how much you owe. It takes less than 2 minutes to get your estimate.