Free Instant Estimate

UK Tax Refund Calculator

Upload your P60, P45, or payslip. Our AI audits your code against HMRC rules to find overpayments instantly.

Our Privacy Promise

No StorageFiles are processed in a temporary session and deleted immediately after calculation.
EncryptionAll data is encrypted in transit using industry-standard SSL/TLS protocols.
No SellingWe never sell your personal or financial data to third parties.
256-bit Encryption
100% Private & Anonymous
HMRCRegistered Developer

No signup required to view estimate. Data is encrypted and automatically deleted.

£1,250

Avg. Refund Found

30s

Time to Check

10k+

Audits Completed

4.9/5

User Rating

The Audit Process

We reverse-engineer HMRC's tax logic to find where you've been overcharged.

1

Parse P45/P60

Our OCR engine extracts your gross pay, tax paid, and tax code from your uploaded document in milliseconds.

2

Verify Tax Bands

We calculate exactly what you *should* have paid based on the tax year's specific allowances and bands.

3

Claim Assistance

If we find an overpayment, we generate the exact letter you need to send to HMRC to get your money back.

Why Use This Instead of HMRC?

HMRC doesn't always automatically catch these errors. We do.

Private & Secure
No data storage for guest checks. End-to-end encryption for all uploads.
Instant Results
Stop waiting on hold with HMRC. Get an answer in 30 seconds.
Deep Scan
We check for emergency tax codes, mid-year changes, and band miscalculations.
AI Assistant
Our bot writes your HMRC claim letters for you. Just print and send.

Recent Recoveries

"Found £840 I didn't know I was owed because of an emergency tax code in 2023."

S

Sarah M.

Recovered £840

"The P45 audit worked perfectly. I had two jobs and got taxed incorrectly on the second one."

J

James T.

Recovered £450

"Simple, fast, and actually works. The letter template saved me hours of phone calls."

D

David K.

Recovered £210

Stop Overpaying HMRC.

It takes less than a minute to check. If you're owed money, we'll help you get it back.