How to use this tool
- Choose "Add tax to price" or "Remove tax from total."
- Enter the amount and tax rate.
- The pre-tax price, tax amount, and total appear instantly.
Why calculate tax in the browser?
This is a plain arithmetic calculation computed locally as you type — instant, with no page reload for a different amount or rate.
Frequently asked questions
- What's the difference between the two modes?
- "Add tax to price" starts from a pre-tax price and adds tax on top. "Remove tax from total" starts from a receipt total that already includes tax and works backward to find the original price and tax amount.
- Does this work for GST and VAT too?
- Yes — the math is identical for sales tax, GST, and VAT; just enter the applicable rate for your region.
- Why isn't "remove tax" just total × rate?
- Because the rate applies to the pre-tax price, not the total — dividing by (1 + rate) first recovers the correct pre-tax base before calculating the tax portion.
How GetByteRush compares
Most free tools for this online work the same way: you upload your file to their server, wait, then download the result — which means your file (and often your email, for a "free" account) sits on someone else's infrastructure. Here's the actual difference:
| Feature | GetByteRush | Typical online tax calculators |
|---|---|---|
| Both add and remove tax modes | Yes | Often only one direction |
| Data ever leaves your device | No — 100% client-side | Often yes |
("Typical online tools" reflects publicly documented behavior of common free file-processing sites as of 2026 — always check a specific competitor's own privacy policy and pricing page, since these details change.)