Childcare Cost vs Second Income Calculator
Inner London childcare now costs £30,000 per year for under-2s. That’s 70% of median take-home pay. Find out if working actually pays.
Enter your numbers below. This takes 30 seconds and shows you the brutal math behind dual income vs childcare costs.
In 2020, average full-time nursery costs in England sat at £194 per week. By 2024? £290. Now in 2025, after government subsidies kicked in, it’s dropped to £239 per week for under-2s—but that’s still £12,425 per year. Your salary kept pace? Probably not. Here’s what the numbers actually say about whether dual income makes financial sense.
How This Works
This is not guesswork. The numbers come from Coram Family and Childcare’s 2025 survey, Office for National Statistics wage data, and HMRC tax calculations for the 2025/26 tax year.
Here’s the formula: Take your second earner’s gross salary. Subtract Income Tax (20% on earnings above £12,570, 40% above £50,270). Subtract National Insurance (8% on earnings between £12,570-£50,270, then 2% above). That gives you take-home pay.
Then calculate childcare costs based on your location and child’s age. England averages £238.95/week for under-2s full-time, £225.70 for 2-year-olds. Inner London? £577/week (£30,000/year). Subtract your eligible free hours—30 hours per week if you’re a working parent earning between £10,158 and £100,000.
Add commute costs, work lunches, professional clothes. What’s left is your actual net benefit. Sometimes that number is negative. That’s the point—to show you before you’re six months into a job wondering where your money went.
Why This Matters Right Now
Eight in ten parents say childcare costs are prohibitively high, according to Joseph Rowntree Foundation’s 2025 research. The problem isn’t just the price—it’s how it interacts with wages that haven’t moved.
Resolution Foundation found that for middle and lower-income families, work often doesn’t pay once childcare enters the equation. A couple earning National Living Wage with two young children can pay £336 per week in childcare. After housing costs, that leaves £275 per week for everything else—food, utilities, transport, clothing. Their household income sits £153 above the poverty line, but their disposable income tells a different story.
The government expanded free childcare to 30 hours per week from September 2025 for working parents with children aged 9 months and up. That’s a genuine help—potentially saving £7,500 per year per child. But here’s the catch: you need to earn at least £10,158 (equivalent to 16 hours at National Minimum Wage). And if either parent earns over £100,000, you’re locked out completely. The average UK salary is £38,100. Most families fall in the middle, where marginal tax rates combine with benefit tapers to create effective tax rates above 60% on extra earnings.
For some families, the second parent taking a job means they’re working for £3-4 per hour after all costs. That’s not a rhetorical point—that’s the actual effective wage. The Institute for Fiscal Studies documented families spending 17% of pre-tax income on childcare for 1-2 year-olds. In the UK, gross childcare fees take up a larger share of household income than almost anywhere in the OECD.
Real Families, Real Numbers
Emma, 29, Manchester | Salary: £28,000
Take-home pay: £23,227/year (£1,935/month)
Childcare cost: £10,506/year at Manchester average (after 30 free hours)
Work expenses: £180/month commute + £100 other = £3,360/year
Net benefit: £9,361/year (£780/month)
Reality check: Working full-time nets Emma £780 monthly after childcare and expenses. That’s £4.50 per hour effective wage for a 40-hour week. Still worth it for career progression and pension, but the financial gain is a third of her nominal salary.
James & Priya, London | Combined income: £75,000
Priya’s take-home: £25,839/year from £35,000 salary
Inner London childcare: £30,000 (child 1) + £18,000 (child 3 with free hours) = £48,000/year
After Priya’s income: £22,161 annual loss
The decision: They’re paying £22,000 more than Priya earns. They do it anyway—Priya’s career is in law, and five years out would be catastrophic. But financially, they’re bleeding money from savings while waiting for both kids to age into free provision.
Sarah, 33, Birmingham | Single parent, salary: £32,000
Take-home pay: £26,132/year
Childcare cost: £9,024/year (40 hours/week, 30 free hours applied)
Work expenses: £2,400/year
Net benefit: £14,708/year (£1,226/month)
Why it works: Part-time hours plus free childcare entitlement means Sarah keeps £1,226 monthly. She earns more than childcare costs, but it’s tight—one unexpected nursery closure or sick week throws everything off.
Quick Cost Comparisons
| Scenario | Gross Salary | Take-Home | Childcare Cost | Net After Care |
|---|---|---|---|---|
| £25k, 1 child (under-2), England | £25,000 | £21,383 | £12,425 | £8,958 |
| £25k, 1 child + 30 free hours | £25,000 | £21,383 | £5,038 | £16,345 |
| £35k, 2 children (ages 1 & 3), Outer London | £35,000 | £27,839 | £22,000 | £5,839 |
| £40k, 1 child (under-2), Inner London | £40,000 | £31,239 | £30,000 | £1,239 |
| £50k, 2 children (both under-2), Scotland | £50,000 | £38,439 | £24,970 | £13,469 |
Costs based on 2025 averages. Childcare assumes 50 hours/week full-time care, 48 weeks/year. Free hours scenarios assume 30hrs/week eligibility.
What You Can Do
If the numbers don’t work, you have options—none perfect, but all worth considering:
- Stagger work hours: If one parent works evenings/weekends, childcare costs drop dramatically. Terrible for family time, but saves £10,000+/year.
- Childminder vs nursery: Childminders average £202/week in England vs £239 for nurseries. That’s £1,850 saved annually.
- Negotiate flexible working: Three days in-office instead of five cuts commute costs by 40%. If your employer allows it, you drop from 50 to 30 childcare hours weekly—saving £4,680/year even without free hours.
- Tax-Free Childcare scheme: Government adds £2 for every £8 you pay in, up to £2,000/year per child. If you’re eligible (earning £10,158-£100,000), claim it. That’s free money.
- Check salary sacrifice childcare: Some employers offer this—you pay nursery fees from pre-tax salary. Saves 20-40% depending on your tax bracket.
- Move closer to work: Sounds drastic, but if you’re spending £250/month on commuting, that’s £3,000/year. If moving saves you 90 minutes daily, you might drop from full-time to part-time childcare.
And if you’re near the £100,000 threshold, talk to an accountant. Pension contributions reduce “adjusted net income” and can keep you under the limit, preserving your £7,500+ in free childcare value.
FAQs
What if I earn over £100,000?
You lose all government-funded childcare and Tax-Free Childcare. Your personal allowance also starts reducing by £1 for every £2 earned above £100k, creating a 60% marginal tax rate between £100k-£125,140. One option: salary sacrifice into pension to bring adjusted net income below £100k. You keep the childcare, reduce tax, and boost your pension. Speak to an accountant—this is one area where professional advice pays for itself immediately.
Do Tax-Free Childcare and free hours stack?
Yes, but only on costs beyond your free hours. If you get 30 free hours weekly but need 50 hours total, you pay for 20 hours. Tax-Free Childcare then gives you 25% back on those 20 hours. You can’t double-dip on the free portion.
What about childcare during school holidays?
Free hours are term-time only—38 weeks per year. If you work year-round, you need wraparound care for the other 14 weeks. Holiday clubs cost £150-250 per week per child. Budget for this—it’s an extra £2,100-£3,500 annually that catches people off guard.
Is it worth working just for career progression even if childcare costs more?
Financially, maybe. Employment gaps hurt lifetime earnings—women who take five years out earn 20% less over their career according to research from the Institute for Fiscal Studies. You’re also paying National Insurance, which counts toward State Pension. If you can afford to take the short-term loss, staying employed often pays off long-term. But “afford” is the key word—not everyone can.
What’s the cheapest childcare option?
Family, if available. Otherwise, childminders cost less than nurseries—£202 vs £239 weekly in England for under-2s. Some parents use nanny shares (two families split a nanny), which can be cheaper than two nursery places. Nurseries at the lower end exist, but quality varies wildly. Ofsted ratings matter.
Can I claim Universal Credit to help with childcare?
If you’re on Universal Credit and working, you can claim back up to 85% of childcare costs (capped at £1,015/month for two+ children). But you can’t combine this with Tax-Free Childcare—you pick one. For lower earners, Universal Credit childcare support is usually better. The gov.uk Childcare Choices website has a tool to compare.
What happens if nursery raises fees mid-year?
They can, and most do annually. Average increases are 3-5%, but London nurseries sometimes jump 8-10%. Read your contract—most require 4-6 weeks notice of fee changes. If it becomes unaffordable, you can withdraw, but you’ll lose your place. Waitlists for good nurseries run 6-12 months in cities, so switching isn’t quick.
Does working part-time make more sense financially?
Often, yes. If you work three days instead of five, you need 30 hours of childcare instead of 50—a 40% cost reduction. Your salary drops 40%, but your childcare costs drop 40%, and you save on commuting and work expenses. Plus, if you qualify for 30 free hours, three-day working can mean minimal or zero childcare costs. Many parents find 3-4 days is the financial sweet spot.
References
- Coram Family and Childcare. (2025). Childcare Survey 2025. Coram Family and Childcare Trust. Retrieved from www.coram.org.uk
- Office for National Statistics. (2025). Labour Market Statistics, December 2025. ONS. Retrieved from www.ons.gov.uk
- Joseph Rowntree Foundation. (2025). Understanding the link between childcare costs, poverty and disposable income. JRF. Retrieved from www.jrf.org.uk
- HM Revenue & Customs. (2025). Tax-Free Childcare guidance. Gov.uk. Retrieved from www.gov.uk
- Department for Education. (2025). 30 hours free childcare: Guidance for parents. Gov.uk. Retrieved from www.gov.uk
- Institute for Fiscal Studies. (2022). The changing cost of childcare. IFS. Retrieved from www.ifs.org.uk
- Resolution Foundation. (2024). The cost of childcare means work often doesn’t pay for middle and lower income families. Resolution Foundation. Retrieved from www.resolutionfoundation.org
- Daynurseries.co.uk. (2025). Childcare costs: How much do you pay in the UK in 2025? Retrieved from www.daynurseries.co.uk