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Compare UK Tax Codes

Pick any two UK PAYE tax codes and we will line up the allowance, emergency status, region and approximate annual tax on a £30,000 salary so you can see exactly how they differ.

Last updated 2026-04-12

Illustration: £30,000 gross / year
AttributeC1257LCBR W1
CategoryWelshEmergency
RegionWalesWales
Allowance£12,570£0
Emergency / non-cumulativeNoYes
Approx. annual tax on £30k£3,486£6,000
In one sentenceWelsh taxpayer version of 1257L. Currently identical in cash terms to the rUK code.Welsh taxpayer version of BR. Currently identical in cash terms to the rUK code. on a non-cumulative (W1) basis.

Bottom line on £30k

On a £30,000 salary, C1257L deducts roughly £3,486 in income tax per year vs £6,000 for CBR W1. That is a difference of £2,514 per year - C1257L is less expensive.

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