Return to Work & Childcare Calculator UK

Comparing your estimated take-home pay with childcare and work-related costs shows the immediate cash impact of returning to work, which is often the figure people want to see first.

It cannot tell you whether returning is personally worth it. Pension contributions, career progression, employment benefits, flexibility and your own preferences all sit outside a cash comparison, and childcare costs usually fall away as children reach school age while salary progression tends to continue.

Income Tax and National Insurance are progressive, so each extra day of pay is not taxed at the same average rate as the first. At the same time childcare costs may rise in a straight line, or jump if an extra day means a new session or a different setting.

Because of that, an additional working day does not necessarily add one fifth of full-time take-home pay. The comparison above shows the actual difference in the amount left each month.

The calculator estimates Income Tax and employee National Insurance on the gross salary for each working pattern, converts the result to a monthly take-home figure, then subtracts your share of the childcare bill and your monthly work-related costs.

You can see both your personal position and the household contribution, which is the figure remaining once the full childcare bill is deducted rather than only your share.

Lower gross earnings normally mean a smaller Income Tax bill and lower employee National Insurance, because the Personal Allowance and the rate bands apply in the same way to a smaller salary.

As a result, take-home pay usually does not fall in exactly the same proportion as gross salary. Dropping from five days to four often reduces net pay by slightly less than a fifth.

Eligible working parents may be able to use Tax-Free Childcare, including after returning from maternity leave, but eligibility conditions apply and your provider must accept payments from a childcare account.

Check the official rules before relying on a top-up. Tax-Free Childcare on GOV.UK.

Tax-Free Childcare works through an online childcare account. For every £8 a parent pays in, the government adds £2, which the parent then uses to pay a registered childcare provider.

The current maximum top-up is £2,000 per child per year, or £4,000 for a disabled child. Eligibility rules apply, including income and work requirements, and top-ups are also subject to quarterly limits.

This calculator produces an annualised planning estimate only. It does not determine whether you qualify.

Enter the actual childcare bill you expect once funded or free childcare hours have been reflected by your provider. The calculator does not deduct funded hours automatically, because entitlement, provider charges and term-time billing vary widely.

England currently has a funded-childcare scheme for eligible working parents. Scotland, Wales and Northern Ireland have different childcare support arrangements.

No. A simple cash comparison does not capture:

• employer pension contributions
• maintaining pensionable service
• career development
• salary progression
• employment benefits
• future earning potential
• personal preference
• flexibility
• time with family

MoneyCalcs UK does not attempt to place a monetary value on these, and the comparison above is not a recommendation about how many days you should work.