Questions, bugs, or ideas?
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GOOD TO KNOW
Everything you need before you write.
A quick guide to the best route, the topics we can help with, and what our calculators are designed to do.
One inbox. Three useful ways to reach it.
Choose the option that matches the kind of help you need.
General information only
We can help with calculators and website-related questions.
No personal tax advice
Results are educational estimates, not professional advice.
Verify important rates
Local rules and transaction details can change the result.
Make the useful details easy to see.
A clear message helps us understand the page, issue and context before we reply.
Calculator questions
Share the tool name, numbers entered and result expected.
Bug reports
Include the exact message and the step where it happened.
Feature ideas
Tell us what question a future calculator should answer.
Tell us what you need help with.
Your email app will open with a prepared draft before anything is sent.
General information only
We can help with calculators and website-related questions.
No personal tax advice
Results are educational estimates, not professional advice.
Verify important rates
Local rules and transaction details can change the result.
Quick answers to common questions.
You might find your answer right here.
Are the calculators free to use?
Yes. All calculators are free to use, with no account or subscription required.
Do you store the numbers I enter?
Calculator inputs are processed entirely in your browser. Avoid entering confidential information.
Are results official tax advice?
No. Results are general educational estimates. For formal decisions, verify with an official source or a qualified professional.
Can I suggest a new calculator?
Absolutely. Select “Feature suggestion” in the form and tell us what problem you’d like a tool to solve.
Why can a result differ by a few cents?
Merchants may round tax at the item or order level, which can cause a small difference.
Are tax rates guaranteed to be current?
Rates can change based on state, locality, product, and transaction type. Always verify important results.