UK Childcare Cost vs Salary Calculator
See what a second income is really worth after Income Tax, National Insurance, childcare costs, Tax-Free Childcare, and the High Income Child Benefit Charge.
Net cost after any free hours already used, before Tax-Free Childcare.
Is This Second Income Worth It?
Net Benefit After Childcare and Child Benefit Effects
£11,920/year
What Is the UK Childcare Cost vs Salary Calculator?
For many UK parents, deciding whether a second income is worth pursuing isn't just about the gross salary on offer — Income Tax, National Insurance, childcare costs, and two often-overlooked government mechanisms all shift the real answer. Tax-Free Childcare tops up childcare costs by 20%, up to £2,000 per child per year, but disappears completely — not gradually — the moment either parent's income reaches £100,000. And the High Income Child Benefit Charge starts clawing back Child Benefit once either parent earns over £60,000, fully gone by £80,000. This calculator combines all of these to show what a specific second income is actually worth, after childcare.
These thresholds create genuine, calculable "traps" — a small pay rise near £100,000 can cost a family thousands in lost Tax-Free Childcare, and earnings between £60,000 and £80,000 quietly lose Child Benefit at the same time as facing 40% Income Tax. This calculator makes both effects visible for your specific numbers, rather than leaving them as background assumptions.
UK Childcare Cost vs Salary Calculator Formula
Net Benefit = Net Pay − Net Childcare Cost − High Income Child Benefit Charge
Net Childcare Cost = Childcare Cost − Tax-Free Childcare Top-Up (20%, capped at £2,000/child)
How Is the UK Childcare Cost vs Salary Calculator Calculated?
Net pay uses standard 2026/27 Income Tax bands and Employee National Insurance on the second earner's salary alone, as UK Income Tax is assessed individually, not on household income. Tax-Free Childcare adds a 20% government top-up to childcare costs, capped at £2,000 per child per year — but only if the earner's income stays below £100,000; at or above that figure, eligibility is lost entirely, which this calculator reflects as a hard cutoff rather than a gradual reduction.
The High Income Child Benefit Charge claws back Child Benefit at a rate proportional to income between £60,000 and £80,000 (HMRC calculates this in £200 income increments; this calculator uses the equivalent smooth percentage for clarity), reaching 100% clawback at £80,000 and above. Both mechanisms are assessed against each parent's individual income, so a second earner crossing either threshold triggers the effect regardless of what the other parent earns.
UK Childcare Cost vs Salary Calculator Example
A £25,000 salary with £12,000 in annual childcare costs for 2 children: net pay is £21,520, Tax-Free Childcare adds a £2,400 top-up, and Child Benefit is unaffected — leaving a net benefit of about £11,920/year.
A £65,000 salary with £15,000 in childcare for 2 children: net pay is £48,257, Tax-Free Childcare still applies (£3,000 top-up), but the High Income Child Benefit Charge claws back £584 of Child Benefit — net benefit is about £35,673.
A £105,000 salary with £20,000 in childcare for 2 children: crossing the £100,000 Tax-Free Childcare cliff loses the entire top-up, and Child Benefit is fully clawed back — net benefit is about £48,120, noticeably less per pound of salary than the lower examples once both effects apply.
How to Use the UK Childcare Cost vs Salary Calculator
Step 1
Enter the second earner's annual gross salary.
Step 2
Enter your total annual childcare cost and number of children.
Step 3
Review the net benefit figure and the breakdown showing Tax-Free Childcare and Child Benefit effects.
Step 4
Use the £100,000 and £60,000-£80,000 warnings to check whether a pay rise or new role might cross a threshold.
Benefits
- Combines Income Tax, National Insurance, Tax-Free Childcare, and the High Income Child Benefit Charge in one calculation.
- Flags the £100,000 Tax-Free Childcare cliff-edge explicitly, since it's easy to miss until you lose the benefit.
- Shows exactly how much Child Benefit is clawed back for a specific salary between £60,000 and £80,000.
- Uses verified 2026/27 rates for all four mechanisms.
- Free, instant, and runs entirely in your browser.
Common UK Childcare Cost vs Salary Calculator Scenarios
Scenario 1
Deciding whether returning to work after parental leave is financially worthwhile once childcare is factored in.
Scenario 2
Checking whether a pay rise near £100,000 or £60,000-£80,000 is worth less than it appears after losing Tax-Free Childcare or Child Benefit.
Scenario 3
Comparing a full-time versus part-time salary for a second earner with young children.
Scenario 4
Understanding why a promotion into a higher salary band doesn't always translate to a proportional increase in disposable income.
Scenario 5
Planning household budgets around known childcare-related income thresholds.
Understanding Your Result
A positive net benefit means the second income is worth more than it costs in childcare and any Child Benefit clawback — but the margin often shrinks sharply near £60,000-£80,000 and especially at £100,000, where thresholds bite. A result close to zero, or negative, suggests the income is being substantially eroded by combined tax, childcare cost, and benefit withdrawal effects, which is worth knowing before committing to a return-to-work decision.
This calculator only measures the direct financial trade-off — it doesn't account for pension contributions building over time, career progression, or non-financial factors, all of which matter for this decision beyond the numbers shown here.
Tips
- If your salary is close to £100,000, pension contributions that reduce your adjusted net income below that threshold can preserve Tax-Free Childcare eligibility entirely, often outweighing the tax saved from the contribution itself.
- The same £100,000 Personal Allowance taper and £60,000-£80,000 High Income Child Benefit Charge zone can overlap for a single earner, compounding the effective marginal cost of extra income in those exact ranges.
- Tax-Free Childcare requires reapplying eligibility confirmation every 3 months — a missed reconfirmation can pause top-ups even while income stays well under the threshold.
- The High Income Child Benefit Charge is assessed on the higher earner in the household even if the other parent is the one actually claiming Child Benefit.
- You can still choose to receive Child Benefit payments and pay the charge back via Self Assessment, or opt out of receiving payments entirely to avoid the charge and paperwork — both preserve your National Insurance credits either way.
Common Mistakes
- Assuming Tax-Free Childcare reduces gradually near £100,000 rather than disappearing entirely at that cliff-edge.
- Not realizing the High Income Child Benefit Charge is based on each parent's individual income, not household income.
- Forgetting that both thresholds apply per parent, so it's specifically the second earner's own salary that matters here, not the couple's combined income.
- Declining to claim Child Benefit at all to avoid the charge, without realizing this can affect National Insurance credits for the lower or non-earning parent — claiming and paying the charge back preserves those credits.
- Not accounting for the free childcare hours already used before entering a net childcare cost figure, double-counting government support.
Frequently Asked Questions
What is Tax-Free Childcare?
A government scheme where, for every £8 you pay into a dedicated childcare account, the government adds £2 — a 20% top-up capped at £2,000 per child per year (£4,000 for disabled children) — available if each parent's individual adjusted net income stays under £100,000.
What happens exactly at £100,000 income?
Tax-Free Childcare eligibility is lost entirely, not gradually reduced — this is a genuine cliff-edge. HMRC will stop top-ups from the date income crosses the threshold and may reclaim contributions made afterward.
What is the High Income Child Benefit Charge?
A tax charge that claws back Child Benefit once either parent's individual adjusted net income exceeds £60,000, at a rate proportional to income between £60,000 and £80,000, reaching a full 100% clawback at £80,000 and above.
Does the High Income Child Benefit Charge apply to household income or individual income?
Individual income for the higher earner in the household — a couple with two earners each on £55,000 (£110,000 combined) wouldn't trigger the charge at all, while a single earner on £70,000 would, even with a lower household total.
Should I stop claiming Child Benefit if I'll have to pay it all back?
You can opt out of receiving payments to avoid the charge and Self Assessment paperwork, but it's usually better to still complete the claim form (even if you opt out of payments) since this protects National Insurance credits for a non-working or lower-earning parent, which affect future State Pension entitlement.
Does this calculator model 30 hours of free childcare?
Not directly — enter your annual childcare cost as the net amount you actually pay after any free hours are already applied, since free hours entitlement varies by child's age and term-time patterns.
Can both parents use Tax-Free Childcare if one earns over £100,000?
No — if either parent's individual income is £100,000 or more, the household loses eligibility entirely, regardless of how low the other parent's income is.
Does this calculator assume all children are eligible for both Tax-Free Childcare and Child Benefit?
Yes — this is a simplifying assumption for the Number of Children field. If your situation differs (for example, some children too old for paid childcare), adjust the childcare cost and children figures to reflect your actual circumstances.
Why does the High Income Child Benefit Charge use a smooth percentage instead of HMRC's exact method?
HMRC calculates the charge in complete £200 income increments above £60,000; this calculator uses the mathematically equivalent smooth percentage for a clearer result, which is accurate to within a fraction of a percent of HMRC's stepped calculation.
Does this apply to Scotland's Income Tax bands?
The Income Tax portion uses England, Wales, and Northern Ireland bands. Tax-Free Childcare and the High Income Child Benefit Charge are UK-wide schemes with the same thresholds regardless of which Income Tax bands apply.
What if my childcare cost is entirely covered by free hours?
Enter £0 for childcare cost — the calculator will show your full net pay as the benefit, still accounting for any High Income Child Benefit Charge if your salary is high enough to trigger it.
Can I share this result as an image?
Yes — tap Share and, on supported devices, your result is shared as a branded image card, not just a text link.
References
Important Information
This calculator provides estimates for informational purposes only and is not tax or financial advice. Uses confirmed 2026/27 HMRC Income Tax and National Insurance rates, Tax-Free Childcare rules, and Child Benefit/High Income Child Benefit Charge thresholds (England/Wales/Northern Ireland Income Tax bands); does not model 30 hours free childcare directly, Universal Credit childcare elements, or legacy Childcare Vouchers. Confirm your specific eligibility with HMRC or the Childcare Choices service.
Last updated: August 2026