Disclaimer: This calculator provides an estimate only; actual Child Benefit and tax charges depend on HMRC rules and your circumstances.
What Is a Child Benefit Calculator UK?
A Child Benefit Calculator UK estimates the 2026/27 Child Benefit for the number of eligible children entered. It shows the gross weekly payment, four-weekly amount, annual benefit, estimated High Income Child Benefit Charge and annual amount remaining after that charge.
The calculator uses £27.05 per week for the eldest or only child and £17.90 for each additional child. If income details are provided, it uses the higher individual adjusted net income—not the couple’s combined income—to estimate the tax charge.
This tool does not submit a claim, confirm that a child is eligible or calculate a part-year award. Visit the homepage if you need a calculator for another childcare or family-finance question.
How to Use the Child Benefit Calculator
1. Enter the Number of Eligible Children
Enter a whole number of children for whom Child Benefit can be claimed. The calculator requires at least one child.
Child Benefit commonly applies to children under 16 and may continue for a young person under 20 in approved education or training. The calculator does not ask for ages, education details, responsibility arrangements or claim dates, so include only children whose eligibility you have already checked.
For wider childcare support rather than Child Benefit payments, use the Childcare Funding Calculator UK.
2. Enter Your Adjusted Net Income
Enter your expected adjusted net income for the complete tax year. This is optional; leaving the field blank makes the calculator treat it as £0.
Adjusted net income is not always the same as salary. It can include taxable income from several sources and may be reduced by specified reliefs. Use a properly calculated figure instead of entering household take-home pay.
3. Add Your Partner’s Adjusted Net Income
If you have a partner, enter their individual adjusted net income. Leave the field blank if you do not have a partner or the amount is £0.
The calculator compares both entries and uses whichever is higher. It does not add the two incomes together. This matters because the High Income Child Benefit Charge is based on the higher-earning individual where the relevant conditions are met.
4. Calculate and Read the Results
Select Calculate to see the estimated annual Child Benefit after charge. The result panel also displays:
- Gross weekly benefit
- Gross payment every four weeks
- Gross annual benefit
- Estimated charge percentage and amount
The “after charge” amount is the gross annual benefit minus the estimated tax charge. It does not mean HMRC reduces each Child Benefit payment before it reaches the claimant; the calculator presents the net economic amount for planning.
How Is Child Benefit Calculated for 2026/27?
The gross weekly calculation is:
£27.05 for the eldest or only child + £17.90 for each additional child
The four-weekly estimate is:
Gross weekly benefit × 4
The full-year estimate is:
Gross weekly benefit × 52
The calculator assumes a complete 52-week award. It does not account for a birth, new claim, child leaving approved education, shared responsibility or another change during the tax year.
The Cost of Raising a Child Calculator UK can compare this payment with a broader household cost projection, but it does not determine Child Benefit entitlement.
How Is the High Income Child Benefit Charge Estimated?
No charge is estimated when the higher adjusted net income is £60,000 or less. Above £60,000 but below £80,000, the calculator charges 1% of gross Child Benefit for every complete £200 over £60,000.
Its programmed formula is:
Charge percentage = Complete £200 bands above £60,000
The calculator rounds down incomplete £200 bands. For example, £60,199 produces 0%, while £60,200 produces 1%.
At £80,000 or above, the estimated charge is 100% of the gross annual Child Benefit. The net amount shown by the calculator then becomes £0.
This tax charge is separate from child-maintenance obligations. Separated parents can use the Child Maintenance Calculator UK for an indicative maintenance calculation.
Child Benefit Calculation Example
Suppose a family enters:
- Eligible children: 2
- Claimant’s adjusted net income: £65,000
- Partner’s adjusted net income: £55,000
The gross weekly benefit is:
£27.05 + £17.90 = £44.95
The gross four-weekly amount is:
£44.95 × 4 = £179.80
The gross annual benefit is:
£44.95 × 52 = £2,337.40
The higher individual income is £65,000. This is £5,000 above the £60,000 threshold:
£5,000 ÷ £200 = 25 complete bands
The estimated charge is therefore 25%:
£2,337.40 × 25% = £584.35
Estimated annual Child Benefit after the charge is:
£2,337.40 − £584.35 = £1,753.05
Every result above matches the calculator’s programmed calculation.
Child Benefit and Other Family Support
Child Benefit is not the same as Tax-Free Childcare. Parents paying an approved provider can review a potential top-up with the Tax-Free Childcare Calculator UK.
Families receiving or considering Universal Credit should use the Universal Credit Childcare Calculator UK for childcare reimbursement estimates. Child Benefit and Universal Credit follow different rules, so one calculator should not be used as a substitute for the other.
Parents planning time away from work can use the Child Care Leave Calculator. Families caring for a disabled child can review the separate Disabled Childcare Allowance Calculator UK. Neither tool changes the Child Benefit rates used on this page.
FAQs
Q1: What are the UK Child Benefit rates for 2026/27?
A: The calculator uses £27.05 per week for the eldest or only child and £17.90 for each additional child.
Q2: Does the calculator combine both partners’ incomes?
A: No. It uses the higher individual adjusted net income to estimate the High Income Child Benefit Charge.
Q3: What happens when adjusted net income exceeds £60,000?
A: The calculator applies a 1% charge for each complete £200 above £60,000. It applies a 100% charge at £80,000 or more.
Q4: Where can I confirm my official calculation?
A: Use the GOV.UK service to check the charge using your complete circumstances.
Q5: Does this tool calculate a part-year Child Benefit claim?
A: No. It multiplies the weekly amount by 52 and does not request claim dates.
Q6: Is the result an official benefit decision?
A: No. It is an independent estimate based on the entered children and income figures. HMRC determines the actual award and tax charge.