UK £100k Childcare TrapCalculator

UK £100k Childcare Trap Calculator

Your family’s income

See what going over £100,000 costs your family in childcare help, Child Benefit and tax, and how much paying into a pension wins back.

Your household
Where you live
Funded childcare hours differ in each nation.
You
£
Including any bonus you expect this tax year.
%
Your partner
£
%
Your children
£
Nursery, childminder or after-school club, at full price, for all the children.
Nursery price and other income
£
Puts a value on free hours. At £6.60, 30 hours is worth about £7,500 a year, the government’s own figure.
£
RentSee the tax on rent. Open in Rental Income Tax Calculator., savings interest or dividendsSee the dividend tax on these. Open in Capital Gains & Dividend Tax Calculator.. It counts towards £100,000 too.
£

Childcare, Child Benefit and tax figures current for 2026/27, last checked against GOV.UK.

Results update as you type

Your results

Pay more into your pension
£4,500 a year
£375 a month, to bring your income down to £100,000
Your family is better off by
£11,846 a year
After tax and childcare, with £4,500 more in the pension too
Your income for the £100,000The Personal Allowance has started to shrink at £100,000 since 2010. See what that is worth today. Open in Inflation Calculator. test
£104,500
£4,500 over £100,000
Your partner’s
£42,750
£57,250 under £100,000
Childcare help at stake
£13,556
You lose all of it
Child Benefit you keep
£0
£2,337 of £2,337 taken back in tax
Over £100,000: no Tax-Free Childcare or funded hours. You have adjusted net income of £104,500. Either parent over £100,000 ends the help for the whole family: £13,556 a year on your figures. Between £100,000 and £125,140 the Personal Allowance also goes, £1 for every £2, so each extra £1 of pay is taxed at 60%.

The £100,000 test uses adjusted net income: income less pension contributions. Paying more into a pension lowers it pound for pound, and the tax relief means each £1 paid in costs much less than £1.

The 15 hours every 3 and 4 year old gets (£3,762 a year here) stay whatever your income.

Your family’s money as your salary changes

Going from £105,000 to £106,000 of salary leaves your family £13,145 a year worse off after tax and childcare. Paying into a pension to stay at £100,000 keeps the line rising.

Your family’s money after tax and childcare help, at your salary from £60,000 to £160,000Line chart of money left after tax and childcare at your salary from £60,000 to £160,000: £70,993 at £60k, £93,450 at £105k, £80,305 at £106k, £103,828 at £160k. Paying into a pension to stay at £100,000: £93,595 at £160k.£70,000£80,000£90,000£100,000£110,000£60k£80k£100k£120k£140k£160k
As things arePaying in enough to stay at £100,000Where you pay 60% taxYour salary

Your household, now and with £4,500 more into pensions

A yearNowWith the top-up
Salaries£155,000£155,000
Paid into pensions (with tax relief)£7,750£12,250
Your adjusted net income£104,500£100,000
Your partner’s adjusted net income£42,750£42,750
Income Tax and National Insurance−£42,863−£40,073
Take-home pay£104,387£102,677
Child Benefit, after the charge£0£0
Childcare bills, before help−£26,400−£26,400
Universal funded hours (3 and 4 year olds)£3,762£3,762
Working-parent funded hours£0£11,286
Tax-Free Childcare£0£2,270
Left after tax and childcare£81,749£93,595

The top-up goes in the same way as each pension (relief at source if there’s no workplace scheme). Your family has £11,846 a year more to spend, and £4,500 more goes into pensions.

Using this calculator

Enter both parents’ salaries and pensions, your children’s ages and what childcare costs before any help. The calculator shows whether either of you is over £100,000 for the childcare test, what that costs your family, and how much more pension would bring you back under.

  • The test uses adjusted net income: your income less pension contributions made through salary sacrifice, net pay, or relief at source (grossed up). Either parent over £100,000 ends Tax-Free Childcare and the working-parent funded hours for the whole family.
  • Funded hours are worth what the nursery would otherwise charge for them, so set the nursery’s hourly price under “Nursery price and other income”.
  • In Wales the childcare offer is tested on gross income, before pension contributions, so paying into a pension won’t bring it back there.

For how the £100,000 cliff works, with worked examples, read the £100,000 childcare trap.

Where the figures come from

Every rate and rule checked against GOV.UK in October 2026.

Frequently asked questions

What is the £100,000 childcare trap?

If either parent’s adjusted net income goes over £100,000, the whole family loses Tax-Free Childcare and, in England, the working-parent funded hours. With two young children that can be worth £15,000 to £20,000 a year, so earning £1 more than £100,000 can leave a family thousands of pounds worse off.

What is adjusted net income?

Your total taxable income, less pension contributions made through salary sacrifice, net pay or relief at source (grossed up), and less Gift Aid donations (grossed up). It’s the figure HMRC uses for the £100,000 test, the Personal Allowance taper and the Child Benefit charge.

How does paying into a pension help?

Pension contributions come off adjusted net income pound for pound. Paying enough in to bring it back to £100,000 restores the childcare help, and the tax relief, at 40% or 60%, means each £1 in the pension costs you much less than £1.

Does it matter if only one parent earns over £100,000?

Yes. The test is on each parent separately, and either one being over £100,000 ends the help for the whole family, even if the other earns little. The incomes aren’t added together.

What does Tax-Free Childcare give?

The government adds £2 for every £8 you pay into your childcare account, up to £2,000 a year for each child under 12 (£4,000 if the child is disabled). Each parent must also earn at least £2,643.68 over 3 months, about 16 hours a week at the National Living Wage.

What are the funded hours in England?

Working parents get 30 hours a week, 38 weeks a year, from when a child is 9 months old until they start school. Every 3 and 4 year old gets 15 hours whatever their parents earn, so over £100,000 a family keeps those 15 but loses the other 15.

Is it the same in Wales, Scotland and Northern Ireland?

No. Wales tests its childcare hours for 3 and 4 year olds on gross income, so a pension won’t bring them back. Scotland’s 1,140 hours have no income test. Northern Ireland has no funded hours tied to income. Tax-Free Childcare is the same across the UK.

What is the 60% tax rate?

Between £100,000 and £125,140, your Personal Allowance is reduced by £1 for every £2 of income, so each extra £1 is taxed at 40% plus 20% on the lost allowance: 60%. A pension contribution in this band gets 60% relief.

How does the Child Benefit charge work?

If the higher earner’s adjusted net income is over £60,000, 1% of the Child Benefit is taken back for every £200 above it, all of it at £80,000. The same pension contribution that lowers income for the £100,000 test lowers this too.

When is income tested?

When you apply and every 3 months when you reconfirm, you say whether you expect your adjusted net income for the tax year to be £100,000 or less. A bonus or pay rise can tip you over, so plan pension contributions before the year ends.

Does salary sacrifice work best?

Salary sacrifice also saves National Insurance, so it usually costs least for each £1 in the pension. A personal pension with relief at source works for the test too, but you claim the higher-rate relief through Self Assessment. From April 2029, the National Insurance saving on salary sacrifice is capped at £2,000 a year.

What doesn’t this calculator cover?

Universal Credit childcare, the higher limits for disabled children, childcare for over-12s, Gift Aid, and income other than a salary beyond a simple total. The PAYE calculator shows your take-home pay in full.