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
| Attribute | CD0 | 1100L |
|---|---|---|
| Category | Welsh | Historical |
| Region | Wales | rUK |
| Allowance | £0 | £11,000 |
| Emergency / non-cumulative | No | No |
| Approx. annual tax on £30k | £6,000 | £3,800 |
| In one sentence | Welsh taxpayer version of D0. Currently identical in cash terms to the rUK code. | Standard allowance for tax year 2016/17: £11,000. |
Bottom line on £30k
On a £30,000 salary, CD0 deducts roughly £6,000 in income tax per year vs £3,800 for 1100L. That is a difference of £2,200 per year - CD0 is more expensive.
Hand-picked side-by-sides that answer the most-searched UK tax-code questions.
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