| 2005~06 | 2004~05 | Increase | ||
| Personal allowance | £4,895 | £4,745 | 150 | |
| Blind person's allowance | £1,610 | £1,560 | 50 | |
| Age allowance income limit | £19,500 | £18,900 | 600 | |
| Age related allowances | ||||
| Personal allowance | 65 - 74 | £7,090 | £6,830 | 260 |
| Personal allowance | 75+ | £7,220 | £6,950 | 270 |
| Married couple's allowance | DOB prior 6/4/1935 | £5,905 | £5,725 | 180 |
| Married couple's allowance | 75+ | £5,975 | £5,795 | 180 |
| Minimum married couple allowance | £2,280 | £2,210 | 70 | |
| 2005~06 | 2004~05 | Increase | |||||
| Lower rate | from | 10% | £0 | 10% | £0 | - | - |
| to | £2,090 | £2,020 | 70 | ||||
| Basic rate | from | 22% | £2,091 | 22% | £2,021 | - | |
| to | £32,400 | £31,400 | 1000 | ||||
| Savings | 20% | 20% | - | ||||
| Higher rate | from | 40% | £32,401 | 40% | £31,401 | - | 1000 |
| 2005~06 | 2004~05 | Increase | |
| Class 1 - employee | |||
| Lower earnings limit (LEL) | £82 per wk | £79 per wk | 3 |
| Employees earnings threshold (ET) | £94 per wk | £91 per wk | 3 |
| Rate up to LEL | 0% | 0% | - |
| Rate between LEL and ET | 0% | 0% | - |
| Rate between ET and UEL (not contracted-out) |
11% | 11% | - |
| Rate in excess of UEL | 1% | 1% | - |
| Rate between ET and UEL (contracted-out) | 9.4% | 9.4% | - |
| Upper earnings limit (UEL) | £630 per wk | £610 per wk | 20 |
| Class 1 - employer | |||
| Earnings threshold (ET) | £94 per wk | £91 per wk | 3 |
| Rate above ET (not contracted-out) |
12.8% | 12.8% | - |
| Rate between ET and UEL (contracted-out) |
9.3% | 9.3% | - |
| Rate in excess of UEL (contracted-out) |
12.8% | 12.8% | - |
| Class 1A | |||
| Rate | 12.8% | 12.8% | - |
| Other taxed benefits in kind | 12.8% | 12.8% | - |
| Class 1B | |||
| Rate | 12.8% | 12.8% | - |
| Class 2 | |||
| Main rate | £2.10 per wk | £2.05 per wk | 0.05 |
| Small earnings exception limit | £4,345 pa | £4,215 pa | 130 |
| Class 3: voluntary contribution | |||
| Flat rate | £7.35 per wk | £7.15 per wk | 0.20 |
| Class 4: self employed on profits | |||
| Rate between LPL and UPL | 8% | 8% | - |
| Rate in excess of UPL | 1% | 1% | - |
| Lower profits limit (LPL) | £4,895 pa | £4,745 pa | 150 |
| Upper profits limit (UPL) | £32,760 pa | £31,720 pa | 1040 |