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 | K700 | NT W1 |
|---|---|---|
| Category | KCode | Emergency |
| Region | rUK | Any |
| Allowance | £-7,000 | N/A |
| Emergency / non-cumulative | No | Yes |
| Approx. annual tax on £30k | £7,400 | £3,486 |
| In one sentence | Adds £7,000 to your taxable pay because untaxed income exceeds your allowance. | No income tax deducted at source. Issued only with explicit HMRC authority. on a non-cumulative (W1) basis. |
Bottom line on £30k
On a £30,000 salary, K700 deducts roughly £7,400 in income tax per year vs £3,486 for NT W1. That is a difference of £3,914 per year - K700 is more expensive.
Hand-picked side-by-sides that answer the most-searched UK tax-code questions.
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