Paying HICBC through your tax code: a guide to HMRC's service

What HMRC's HICBC PAYE service is

Until 2025, owing the High Income Child Benefit Charge meant registering for Self Assessment — even if you were a straightforward PAYE employee with nothing else to report. That changed with the service announced at the Spring Statement 2025: HMRC said in April 2025 that families would be able to pay through their tax code “from the summer”, and by March 2026 it was describing the HICBC PAYE digital service as available through GOV.UK or the HMRC app. You can use it for the current tax year or the previous one, as long as it is on or before 31 January after the end of the year you are paying for.

HMRC works out the charge from the income details you give and the pay information your employer reports, then sends you and your employer a new tax code so the extra tax is deducted from your pay. No return and no January filing — provided HICBC is your only reason to file. If your income comes from a pension, HMRC sends the new code to your pension provider instead.

The charge itself is unchanged. Child Benefit in 2026/27 is £27.05 a week for the eldest child and £17.90 a week for each additional child; the charge claws back 1% of that for every £200 of adjusted net income over £60,000, reaching 100% at £80,000. The percentage, the Child Benefit total and the charge itself are each rounded down to a whole number (section 681C of the Income Tax (Earnings and Pensions) Act 2003). The HICBC deep dive covers the mechanics of the charge; this page is about how to pay it.

Who this route is for — and who it isn't

The PAYE route is designed for one specific person: an employee (or someone with a private pension taxed under PAYE) whose adjusted net income is over £60,000, whose household receives Child Benefit, and who has no other reason to file Self Assessment.

It is not for you if any other filing trigger applies. You stay in Self Assessment — and HICBC goes on your return as before — if you have:

• Self-employment income over the £1,000 trading allowance.
• Property income above the reporting thresholds.
• Substantial untaxed savings, dividend or investment income.
• Capital gains to report.
• Any other trigger on the do-I-need-Self-Assessment checklist.

Two more exclusions. If the 31 January deadline for the year you owe has already passed, Self Assessment is the only remaining route for that year — for 2024/25 (deadline 31 January 2026) that ship has sailed. And if you've claimed Child Benefit but opted out of receiving payments, there's nothing to collect: no payments received means no charge, and the claim still protects the lower earner's National Insurance credits.

Step by step: moving HICBC into your tax code

1. Check your adjusted net income (ANI), not your salary. The charge runs on ANI: total taxable income minus pension contributions (grossed up where paid with relief at source) and Gift Aid. A £66,000 salary with £7,000 going into a pension can sit under the £60,000 threshold entirely. Run the adjusted net income calculator first — you may owe nothing.
2. Work out the charge. 1% of your household’s Child Benefit for every complete £200 of ANI over £60,000. The HICBC calculator gives the exact figure for your income and number of children. The partner with the higher ANI owes it — not necessarily the person who claims the benefit.
3. If you're in Self Assessment only because of HICBC, phone HMRC. GOV.UK says you need to contact HMRC by phone both to leave Self Assessment and to register to pay through PAYE; it does not happen automatically. If you simply stop filing while HMRC still expects a return, you can be charged late-filing penalties even when nothing else is owed.
4. Otherwise, register through the GOV.UK service (or the HMRC app). Have ready your adjusted net income, your partner’s adjusted net income if you have a partner, the National Insurance number of any partner who received Child Benefit in the last tax year, and the dates of those relationships. You cannot save your progress, and you may be asked to prove your identity. The deadline is 31 January after the end of the tax year you are paying for — 31 January 2027 for 2025/26. Once you are registered, the payments are set up and you do not need to do anything else unless your circumstances change.
5. Watch for the new tax code. HMRC issues a coding notice (P2) and updates your Personal Tax Account. Your code falls because a deduction has been added, sized so the extra tax collected over the year matches the estimated charge.
6. Check your payslip. The code on your payslip changes and the tax deducted rises by roughly the annual charge divided by your remaining paydays. Sense-check the monthly amount against the calculator figure — and if your income changes mid-year, update your estimated income in your Personal Tax Account so the code keeps tracking reality.

Worked example: £68,000, two children

What that does to the code: to collect an extra £934 from someone whose marginal rate is 40%, HMRC reduces the tax-free allowance by about £2,335 (£2,335 × 40% = £934). A standard 1257L code would drop to around 1023L. The exact code depends on anything else in your coding, HMRC's rounding and — in Scotland — different tax rates, so treat this arithmetic as illustrative and the coding notice as definitive.

The family keeps the rest of the benefit — £1,403 a year — which is the core reason claiming usually beats opting out in the £60,000–£80,000 band.

PAYE collection vs Self Assessment

Neither route changes what you owe — £934 is £934 either way. The differences are cash-flow, admin and accuracy:

• Cash-flow. The code spreads the charge across the year (≈ £78 a month in the example above); Self Assessment collects it as one lump sum by 31 January after the tax year ends. If you'd rather hold the money until then and pay in one go, Self Assessment works in your favour; if a four-figure January bill is exactly the kind of thing you fail to budget for, the code is safer.
• Admin. The PAYE route is a one-off online registration; Self Assessment is an annual cycle of filing by 31 January, with penalties for missing it.
• Accuracy. The code runs on estimated in-year income and gets reconciled afterwards; Self Assessment reports actual figures once the year is over, so it's exact at the point of filing.
• Eligibility. Any other filing trigger — self-employment, property, investment income, capital gains — forces Self Assessment regardless. See the Self Assessment repayment mechanics for that route's deadlines and penalty regime.

The full dimension-by-dimension comparison table is at the bottom of this page. For the broader question of whether Self Assessment ever makes sense for you beyond HICBC, see Self Assessment vs PAYE-only.

Pitfalls to watch

• Stopping filing without leaving Self Assessment. If HMRC has issued you a notice to file, simply not filing earns a £100 penalty (and more later) even if you meant to pay through your code. Phone HMRC to leave Self Assessment and register for the PAYE route.
• Estimates drift. A bonus, pay rise or job change mid-year changes the charge, but the code is built on an estimate. Under-collection gets swept up after year end; over-collection comes back the same way. Update your estimated income in the Personal Tax Account when things change rather than waiting for the reconciliation.
• Two years at once. The service covers the current tax year and the previous one. If you register for both, and the earlier year’s charge is collected through your code alongside the current year’s, your code can fall by more than one year’s charge. If your code drops by more than you expected, check the coding notice for an amount carried from an earlier year.
• Mid-year registrations compress the deduction. Register with six months of the tax year left and the same charge is collected over six paydays, not twelve — a bigger monthly bite until the next full year normalises it.
• The wrong partner registers. The charge belongs to the partner with the higher adjusted net income, who is often not the Child Benefit claimant. The which-partner-pays guide covers the edge cases.
• Confusing this with opting out. Opting out stops the Child Benefit payments, so there is no charge to collect; the PAYE service keeps the payments coming and collects the charge. They solve different problems — the opt-out vs claim-and-pay guide is the decision framework.

Frequently asked questions

Do I still need Self Assessment if I use the HICBC PAYE service?

No — provided HICBC was your only reason to file. If you have been filing only for HICBC, you need to phone HMRC to leave Self Assessment and register for the PAYE route; it does not happen automatically. If you have any other filing trigger — self-employment income over £1,000, property income, substantial investment income or capital gains — you stay in Self Assessment and HICBC goes on your return.

What is the deadline to register?

31 January after the end of the tax year you owe the charge for. For 2025/26 that means 31 January 2027. Miss it and that year's charge can only be settled through Self Assessment. Once you are registered, HMRC keeps collecting through your code and you only need to update it if your circumstances change.

How much will my take-home pay drop?

Whatever your annual charge is, divided by your remaining paydays. At £68,000 of adjusted net income with two children, the 2026/27 charge is £934 — about £78 a month across a full year. That corresponds to a tax-free allowance roughly £2,335 lower, so a standard 1257L code falls to around 1023L.

Does paying through my tax code change my Child Benefit payments?

No. Child Benefit keeps arriving in full — £27.05 a week for the eldest child plus £17.90 for each additional child in 2026/27 — and the charge is collected separately as extra tax through your code. The claim also continues to give National Insurance credits to the parent registered for Child Benefit while a child is under 12. If you'd rather not receive the money at all, the separate claim-but-opt-out route still exists and still protects those credits.

What happens if my income estimate is wrong during the year?

The code is built on estimated income from real-time pay data, so a bonus, pay rise or job change can push it off. HMRC reconciles after the year ends — collecting any shortfall or refunding any excess — and you can shorten the lag by updating your estimated income in your Personal Tax Account as soon as circumstances change.

Sources and methodology

Checked on 3 October 2026.

• GOV.UK: High Income Child Benefit Charge (who can pay through PAYE, the 31 January cut-off, leaving Self Assessment by phone, what you need to register)
• HMRC news, 31 March 2026 (2026/27 rates £27.05 and £17.90 a week; the HICBC PAYE digital service available through the HMRC app or GOV.UK)
• HMRC news, 1 April 2025 (service announced at the Spring Statement 2025, to open from the summer)
• Income Tax (Earnings and Pensions) Act 2003, section 681C (1% for every £200 over £60,000; amounts and percentage rounded down)
• GOV.UK: tax codes (paying the charge through your wages or pension changes your code)
• LITRG: High Income Child Benefit Charge (independent guidance)

Charge figures were recomputed from the 2026/27 Child Benefit rates using the section 681C rounding rules. The methodology page documents how figures are checked.

Related HICBC guides

• HICBC deep dive — full mechanic
• Opt out vs claim and pay back
• Paying HICBC via Self Assessment
• Which partner pays HICBC?
• HICBC for separated or divorced parents
• HICBC calculator
• Adjusted net income calculator
• Do I need Self Assessment?