Common codes
| Code | Meaning |
|---|---|
| 1257L | Standard £12,570 allowance |
| 1257L W1/M1/X | Emergency code, non-cumulative |
| BR | 20% on everything (second job) |
| D0 / D1 | 40% / 45% on everything |
| 0T | No allowance |
| K… | Untaxed income added (max 50% of pay) |
| M / N | Marriage Allowance received / given |
| S / C | Scottish / Welsh taxpayer |
FAQ
What does 1257L mean?
You can earn £12,579 tax-free in the tax year (1,257 × 10 + 9).
Sources (checked 6 Nov 2026): HMRC tax codes guidance.