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We reverse-engineer HMRC's tax logic to find where you've been overcharged.
Our OCR engine extracts your gross pay, tax paid, and tax code from your uploaded document in milliseconds.
We calculate exactly what you *should* have paid based on the tax year's specific allowances and bands.
If we find an overpayment, we generate the exact letter you need to send to HMRC to get your money back.
HMRC doesn't always automatically catch these errors. We do.
"Found £840 I didn't know I was owed because of an emergency tax code in 2023."
Sarah M.
Recovered £840
"The P45 audit worked perfectly. I had two jobs and got taxed incorrectly on the second one."
James T.
Recovered £450
"Simple, fast, and actually works. The letter template saved me hours of phone calls."
David K.
Recovered £210