Credits we check · United Kingdom

Did you overpay on an emergency tax code?

RefundSift checks your United Kingdom tax situation for the emergency tax code refund. Here is what it is, in plain language, with links to the official HMRC pages.

Who qualifies

• Your tax code ends in W1, M1 or X (or your payslip says NONCUM), often after starting a new job or a company benefit.
• On an emergency code your tax is worked out on each payment alone, which can mean paying the wrong amount.

How much

Depends on your pay and how long you were on the code. GOV.UK says if you have paid too much tax you can get a refund.

How far back you can claim

See GOV.UK for how to update your tax code and claim a refund.

Official sources

• Emergency tax codes (GOV.UK)
• Check your Income Tax for the current year (GOV.UK)

Not tax advice. This page is general information based on the official sources above, which can change. Rules and amounts depend on your full situation and the tax year. Check the official source or a qualified professional before you claim.