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 | NT | C0T |
|---|---|---|
| Category | NoTax | Welsh |
| Region | Any | Wales |
| Allowance | N/A | £0 |
| Emergency / non-cumulative | No | Yes |
| Approx. annual tax on £30k | £0 | £6,000 |
| In one sentence | No income tax deducted at source. Issued only with explicit HMRC authority. | Welsh taxpayer version of 0T. Currently identical in cash terms to the rUK code. |
Bottom line on £30k
On a £30,000 salary, NT deducts roughly £0 in income tax per year vs £6,000 for C0T. That is a difference of £6,000 per year - NT is less expensive.
Hand-picked side-by-sides that answer the most-searched UK tax-code questions.
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