Tax and markup calculator
Enter a base amount and percentage to calculate the extra amount and total.
Search and use guide
Tax and markup calculator
Calculate extra amount and total from a base amount and percentage. privacy-first-browser-tooling
Who it helps
- Useful for sales tax, service charge, platform fee, or markup estimates.
- This is a simple percentage estimate, not tax or accounting advice.
- 100 plus 8% adds 8 for a total of 108.
What you can enter
- 100 plus 8% adds 8 for a total of 108.
- This is a simple percentage estimate, not tax or accounting advice.
How to read results
This is a simple percentage estimate, not tax or accounting advice. privacy-first-browser-tooling
Data and privacy
GoGo Tools records analytics by tool slug only and does not include your input values. privacy-safe-analytics-only
Feedback
How can we improve this tool?
Send a suggestion or bug report for this tool.
FAQ
Can I use this in any country?
Yes. Enter values or rules that match your location.
Does GoGo Tools store my inputs?
Regular calculations run in your browser. Analytics events record the tool slug only and do not include input values.
Can I use the result for official documents?
Use results for quick estimates. For official use, rely on source files, official rules, or professional advice.
Does it work on mobile?
Yes. Tool pages are responsive for phones and desktop browsers.