Know exactly what you keep.

PayAfterTaxCalc started with a simple frustration: most paycheck calculators online give you a number with no explanation of how it was calculated or where the underlying tax figures came from. We built this to be different.

Every calculation runs on a versioned tax engine, each rule traces back to a named government source (the IRS, CRA, or HMRC), an effective date, and a last-reviewed date. When a tax year changes, we update the source data and the change is traceable, not a silent edit.

We currently cover the United States, Canada, and the United Kingdom, with more countries planned. Every calculator is free to use, requires no account, and nothing you enter is stored.

What we believe

• Accuracy comes before feature count.
• Every important tax rule should be traceable to its official source.
• A calculator should show its work, not just a final number.
• Your data is yours. We don't store what you enter.

Read more about how we calculate results on our Methodology page, or get in touch if you have questions.