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Return to Work Calculator

Find out your net monthly gain from returning to work after factoring in childcare costs, commuting, tax, and other work-related expenses.

Thinking about going back to work after maternity leave, a career break, or time at home with the children? This calculator helps you understand the real financial impact of returning to work by comparing your take-home pay against all the costs involved.

Many parents worry that once they factor in childcare, commuting, and other expenses, working might not be worth it financially. This tool gives you a clear, honest picture so you can make an informed decision.

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What this calculator does

This calculator estimates your net monthly financial gain (or loss) from returning to work. It takes your expected salary, applies UK income tax, National Insurance, pension contributions, and student loan repayments, then subtracts childcare costs, commuting expenses, and other work-related costs to show you the real difference returning to work would make to your household finances.

Who it is for

Parents considering returning to work after time at home, those weighing part-time vs full-time options, or anyone trying to understand whether the financial trade-off of working makes sense for their family.

How to use it

Enter your expected annual salary, select your pension contribution rate and student loan plan if applicable, then add your estimated monthly childcare costs, commuting costs, and any other work-related expenses. Toggle Tax-Free Childcare if you plan to use the government scheme. Click 'See My Result' to get your personalised breakdown.

How the calculation works

We calculate your take-home pay using current UK tax bands, National Insurance thresholds, and pension contribution rates for the 2025/26 tax year. We then subtract all work-related costs you enter to show your net monthly gain. If you select Tax-Free Childcare, we apply the government's top-up of £2 for every £8 you pay in (capped at £2,000 per child per year) to reduce your childcare costs.

Worked example

Sarah earns £30,000 per year, contributes 5% to her pension, and has no student loan. Her monthly childcare costs are £1,200 for one child, commuting costs £150, and food/expenses are £100. With Tax-Free Childcare, the government tops up £200/month (20% of childcare cost), reducing her effective childcare to £1,000. Her monthly take-home is approximately £1,958. After all work costs (£1,250 total), she is £708 per month better off working — that is £8,496 per year.

Assumptions and limitations

  • Tax calculations use 2025/26 UK rates and thresholds
  • Tax-Free Childcare: the government adds £2 for every £8 you pay in, capped at £2,000 per child per year
  • National Insurance uses the standard employee rate of 8%
  • This is an estimate — your actual take-home may vary based on your specific tax code, benefits, and circumstances
  • Does not account for Universal Credit, Child Benefit, or other means-tested benefits which may be affected by your return to work

Frequently asked questions

How much better off would I be returning to work 3 days a week?

You can use this calculator with a part-time salary — simply enter the pro-rata annual salary for 3 days per week (typically 60% of the full-time equivalent). Remember to also adjust your childcare costs to match.

Does this include Tax-Free Childcare?

Yes. Toggle the Tax-Free Childcare option on, and we will apply the government’s top-up to your childcare costs — £2 for every £8 you pay in, capped at £2,000 per child per year.

What about Universal Credit?

This calculator does not currently factor in Universal Credit, which may cover up to 85% of childcare costs for eligible families. If you receive UC, your net gain from working could be higher than shown.

Is this calculator accurate?

This calculator provides estimates based on standard 2025/26 UK tax rules. Your actual take-home pay may differ based on your specific tax code, additional income sources, or benefits.

Related calculators

  • Tax-Free Childcare Calculator — For every £8 you pay into a Tax-Free Childcare account, the government adds £2 — up to £2,000 per child per year.

Related guides

Sources and references

HMRC Income Tax rates and thresholds 2025/26 (https://www.gov.uk/income-tax-rates), National Insurance rates (https://www.gov.uk/national-insurance-rates-letters), Tax-Free Childcare (https://www.gov.uk/tax-free-childcare)

Last updated

Last reviewed: 2025-04-06.