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 | 1100T | K500 |
|---|---|---|
| Category | Standard | KCode |
| Region | rUK | rUK |
| Allowance | £11,000 | £-5,000 |
| Emergency / non-cumulative | No | No |
| Approx. annual tax on £30k | £3,800 | £7,000 |
| In one sentence | Reduced allowance with HMRC-review marker. | Adds £5,000 to your taxable pay because untaxed income exceeds your allowance. |
Bottom line on £30k
On a £30,000 salary, 1100T deducts roughly £3,800 in income tax per year vs £7,000 for K500. That is a difference of £3,200 per year - 1100T is less expensive.
Hand-picked side-by-sides that answer the most-searched UK tax-code questions.
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