Prompts (most impact first)
Useful official links
Estimates only. General information, not financial or tax advice. Rules vary and can change. If you’re near thresholds, verify with GOV.UK or a qualified adviser.
What the check-up looks at
| Check | 2026/27 figure |
|---|---|
| ISA allowance | £20,000 a year across all your ISAs |
| High Income Child Benefit Charge | 1% of child benefit for every £200 of adjusted net income over £60,000, so all of it by £80,000 |
| Child benefit | £27.05 a week for the eldest child, £17.90 for each other child |
| Personal allowance taper | £1 of the £12,570 allowance is lost for every £2 of income over £100,000 |
| Personal Savings Allowance | £1,000 of interest tax-free for basic-rate taxpayers, £500 for higher rate, none for additional rate |
| Pension annual allowance | Usually £60,000 of contributions a year, including tax relief and employer payments |
Adjusted net income
Your income before tax, minus pension contributions that get tax relief (grossed up if paid by relief at source) and Gift Aid donations (grossed up). It decides the child benefit charge and the personal allowance taper, which is why pension contributions can reduce both.
Even if the charge would take all of your child benefit, it can still be worth claiming: the claim gives a non-earning parent National Insurance credits towards their State Pension. You can claim and opt out of the payments.