Welsh Income Tax 2026/27
Wales has its own income tax system under the Welsh Rates of Income Tax (WRIT) framework, introduced by the Wales Act 2014. Welsh Ministers can adjust rates by ±10 percentage points from the UK baseline. In 2026/27, Welsh Ministers have chosen to keep rates equal to England: 20% Basic Rate, 40% Higher Rate, and 45% Additional Rate.
If Welsh rates ever diverge from England's in a future year, this calculator will be updated. Check the Welsh Government income tax page for the latest.
What is a C prefix tax code?
C before your tax code (e.g., C1257L) identifies you as a Welsh taxpayer. Your employer uses this code to ensure your income tax is attributed to the Welsh Government's block grant, even though the amount deducted is currently the same as England. Read our C tax code guide for more detail.