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Free Quarterly Estimated Tax Calculator

Estimate US quarterly tax payments (Form 1040-ES) with safe harbor rules and due dates.

Enter your expected self-employment profit, any tax withheld elsewhere and last year's tax and income. It estimates your yearly tax and the quarterly payment needed to avoid an underpayment penalty.

How to use the Quarterly Estimated Tax Calculator

  1. Select your country at the top of the page so the currency, tax names and rates match where you do business.
  2. Enter your numbers. Every result updates instantly and each line of the working is shown so you can check it.
  3. Use the PDF or print button to keep a record, and change one input at a time to compare scenarios.

What is the Quarterly Estimated Tax Calculator?

If you earn income that has no tax withheld, the IRS expects you to pay tax during the year in four estimated payments. This calculator estimates your yearly tax and what each payment should be, using the safe harbor rules.

Signplify tools run in your browser, so there is no signup, no watermark and no limit on how often you use it.

Getting started with the Quarterly Estimated Tax Calculator

Using the quarterly estimated tax calculator takes a minute or two. Your progress is saved in this browser, so you can come back later.

Tips for better results

Payments are usually due Apr 15, Jun 15, Sep 15 and Jan 15.

Paying 100% of last year's tax (110% if your income was over $150,000) or 90% of this year's tax avoids an underpayment penalty.

Set money aside from every payment you receive.

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Privacy and where your data goes

Documents and files you use here are processed on your own device. Signplify does not receive what you type or the files you open, which makes it suitable for sensitive information. If you clear your browser data, any saved draft is removed.

Frequently asked questions

Who needs to pay quarterly estimated tax?

Generally people who expect to owe $1,000 or more after withholding and credits, such as freelancers and self-employed people.

Is this exact?

No. It is an estimate for a single filer using the standard deduction. State tax, credits and other income are not included.

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