The High Income Child Benefit Charge: What It Is and How To Challenge It

You've just received a letter from HMRC saying you owe thousands of pounds in tax—possibly going back years—for something called the "High Income Child Benefit Charge." You had no idea this existed. You're on PAYE. You've never filed a tax return. And now HMRC wants penalties on top.

You're not alone. In 2022–23, 440,000 people paid £525 million in HICBC. It's one of the most common reasons people end up before the tax tribunal—and one of the charges that catches the most people off guard.

Here's what HICBC is, how it works, whether you actually owe what HMRC says you do, and what your options are.

What Is The High Income Child Benefit Charge?

The High Income Child Benefit Charge (HICBC) is a tax charge that claws back some or all of the child benefit received by your household. It was introduced on 7 January 2013 by Schedule 1 to the Finance Act 2012 and is set out in sections 681B–681H of ITEPA 2003.

The charge applies if either you or your partner receives child benefit and the higher earner's "adjusted net income" exceeds £60,000. It doesn't matter who actually claims the benefit—the person who pays is always the higher-earning partner.

This catches many people. Your partner may have been claiming child benefit for years—possibly since before HICBC existed—and you, as the higher earner, may have had no involvement with the claim at all. But if your income is over the threshold, you're the one who owes the charge.

How The Taper Works

HICBC doesn't hit all at once. It's tapered based on how far your income exceeds the threshold. The rates have changed over time:

If your income is between the threshold and the full clawback point, you owe a proportion of the child benefit. Once you're above the clawback point, you owe 100% of it back.

The section 681C formula works like this: take your adjusted net income, subtract the threshold, divide by the taper divisor (£200 from 2024–25, £100 before that), and that gives you the percentage of child benefit you owe back—capped at 100%.

Important if HMRC is assessing you for past years: the old £50,000 threshold applies to every year before 2024–25. The new £60,000 threshold only applies from 2024–25 onwards.

How HICBC Is Calculated

The charge is based on your adjusted net income, not your gross pay. This is a crucial distinction—because adjusted net income can be significantly lower than the number on your payslip.

Adjusted net income is defined in section 58 of the Income Tax Act 2007. Here's how to work it out:

1. Start with your total taxable income—employment, self-employment, pensions, savings interest, dividends, rental income, benefits in kind (company car, private medical insurance). You can find your employment income on your P60 (issued by your employer each April) and any benefits in kind on your P11D.
2. Subtract grossed-up Gift Aid donations—for every £1 you donate, you deduct £1.25
3. Subtract grossed-up personal pension contributions (where tax relief is given at source)—for every £1 you contribute, you deduct £1.25. Your pension provider's annual statement will show this.
4. Add back any trade union or police organisation payment deductions

GOV.UK has detailed guidance on adjusted net income and a child benefit tax calculator that does the maths for you.

Current Child Benefit Rates

To calculate your HICBC, you need to know how much child benefit your household receives. The 2024–25 weekly rates are:

• Eldest or only child: £26.05 per week (about £1,355 per year)
• Each additional child: £17.25 per week (about £897 per year)

So a family with two children receives about £2,252 per year. You can check the current rates on GOV.UK and use the child benefit tax calculator to work out your exact charge.

A Worked Example

Sarah earns £66,000 in 2025–26. She receives child benefit of £2,251.60 for two children. She pays £3,000 (net) into a personal pension with relief at source.

1. Total taxable income: £66,000
2. Grossed-up pension contributions: £3,000 x 1.25 = £3,750
3. Adjusted net income: £66,000 − £3,750 = £62,250
4. Amount over threshold: £62,250 − £60,000 = £2,250
5. Percentage: £2,250 ÷ £200 = 11.25%, rounded down to 11%
6. HICBC: 11% x £2,251.60 = £247 (rounded down)

Without the pension contribution, Sarah's adjusted net income would be £66,000 and the charge would be 30% x £2,251.60 = £675. The pension contribution saves her £428 in HICBC alone—on top of the tax relief on the pension contribution itself.

How To Reduce Your HICBC Bill

Since HICBC is based on adjusted net income, anything that reduces your adjusted net income can reduce or eliminate the charge.

Pension Contributions

Personal pension contributions (those where tax relief is given at source) reduce your adjusted net income. This is the most common way to bring income below the HICBC threshold—or at least reduce the percentage of child benefit clawed back.

One important distinction: employer pension contributions made directly by your employer do not reduce your adjusted net income (they were never included in your income in the first place). But salary sacrifice arrangements—where you agree to a lower salary in exchange for higher employer pension contributions—do reduce your adjusted net income, because your salary itself is lower.

Even for past years where HMRC has raised assessments, check whether your adjusted net income was calculated correctly, including any pension contributions you made at the time. If HMRC has used your gross pay without accounting for pension contributions you actually made during those years, the assessed amount could be wrong. (You can't make new contributions now to reduce past years' adjusted net income—only contributions made in the relevant tax year count.)

Gift Aid Donations

Charitable donations made under Gift Aid also reduce adjusted net income. For every £1 you donate, you can deduct £1.25 from your income for HICBC purposes.

The Notification Trap

Here's where HICBC gets most people into trouble.

Under section 7 of the Taxes Management Act 1970, anyone who is liable to income tax and isn't already in Self Assessment (the system where you file an annual tax return) must notify HMRC by 5 October after the end of the tax year. Normally, PAYE employees are exempt from this—if all your tax is collected through your payslip, you don't need to tell HMRC anything.

But section 7(3)(c) removes that exemption if you're liable to HICBC. The moment your adjusted net income crosses the threshold and your household receives child benefit, you have a legal obligation to register for Self Assessment—even if every other penny of your tax is handled through PAYE.

This is the trap. If you've been a PAYE employee your entire working life, you have no reason to think you need to file a tax return. Nothing in your pay packet tells you about HICBC. And if you don't know about the charge, you can't know you need to notify HMRC about it.

The consequences of not notifying are serious. Under section 36(1A)(b) TMA 1970, where the unpaid tax results from a failure to notify under section 7, HMRC can go back up to 20 years. In practice, HICBC only started in January 2013, so the maximum lookback is to 2012–13—but that's still over a decade of back-charges.

The New PAYE Payment Option

In September 2025, HMRC launched a new online service that allows PAYE employees to pay HICBC through their tax code—without needing to register for Self Assessment. This applies if HICBC is the only reason you'd need to file a tax return.

If you're currently in Self Assessment solely because of HICBC, you may be able to de-register and use this service instead. Be aware that during the transition, you might see two years' worth of HICBC collected through one year's tax code.

This service doesn't help with past years that are already under assessment. But it may simplify things going forward.

What Happens When HMRC Catches Up

If you didn't notify HMRC about your HICBC liability, here's what typically happens. You may receive one or more of the following: a "nudge letter" (an informal letter asking you to check whether you need to file a tax return), followed by formal discovery assessments (telling you the tax HMRC says you owe), and penalty notices (the financial penalty for not notifying). Each has different deadlines, so check each document carefully.

Discovery Assessments

HMRC raises discovery assessments under section 29 TMA 1970. These are assessments raised outside the normal Self Assessment process, where HMRC "discovers" that tax has gone unpaid.

Before the Finance Act 2022, there was a legal argument that HMRC couldn't use discovery assessments for HICBC at all. In HMRC v Wilkes [2022] EWCA Civ 1612, the Court of Appeal held that HICBC is not "income" within the meaning of section 29(1)(a)—it's a free-standing charge to income tax—so the provision didn't authorise HICBC discovery assessments.

Parliament responded by retrospectively amending section 29 through section 97 of the Finance Act 2022. The amended wording now refers to "an amount of income tax" rather than "income which ought to have been assessed." This fix applies to all years, except for appeals that were already before the tribunal by 30 June 2021 with the invalidity of the discovery assessment as a stated ground.

The practical effect: the Wilkes defence is no longer available for new cases. HMRC can now validly raise discovery assessments for HICBC.

Failure-To-Notify Penalties

On top of the tax itself, HMRC charges failure-to-notify penalties under Schedule 41 of the Finance Act 2008. The penalty is a percentage of the "potential lost revenue" (PLR)—the amount of tax that was unpaid on 31 January after the end of the tax year. For HICBC, that's simply the unpaid charge for that year.

The percentages for domestic cases depend on your behaviour and whether you or HMRC disclosed the problem first:

*The minimum for prompted, non-deliberate disclosure is 10% if HMRC became aware of the failure within 12 months of the tax becoming unpaid, and 20% if after 12 months.

**The minimum for unprompted, non-deliberate disclosure is 0% if HMRC became aware within 12 months, and 10% if after 12 months.

For most HICBC cases, the behaviour is non-deliberate—you didn't know about the charge. If HMRC contacted you first (a "nudge letter" or discovery assessment), your disclosure is prompted. The typical penalty range is therefore 10%–30% of the unpaid HICBC for each year.

Check the penalty calculation carefully. In Brown v HMRC [2024] UKFTT 245 (TC), the tribunal found that HMRC's statement of case claimed penalties at 27% when they had already reduced them to 20% in correspondence. The tribunal described this as "an issue of extremely serious concern."

Interest

On top of the tax and penalties, HMRC charges late payment interest on unpaid HICBC from the date it was originally due (31 January after the end of the tax year). For multi-year assessments going back to 2012–13, interest alone can add significantly to the total bill. Interest is not a penalty—it runs automatically and cannot be appealed, though it stops accruing once you pay.

If the total amount is more than you can pay at once, you can contact HMRC to set up a Time to Pay arrangement—an instalment plan that spreads the cost. Interest continues to accrue on the outstanding balance, but HMRC will generally agree to a reasonable payment schedule. Contact HMRC (0300 200 3820 for Self Assessment) to discuss your options.

Can You Appeal?

Yes—and there are different grounds depending on whether you're challenging the tax itself, the penalties, or both.

Appealing The Tax

You can appeal the HICBC assessment if you believe:

• Your adjusted net income was below the threshold. If HMRC has used your gross pay without accounting for pension contributions, Gift Aid, or salary sacrifice, the assessment may be wrong. This is worth checking carefully.
• You weren't in a "partnership" for HICBC purposes. Under section 681G ITEPA 2003, "partner" means someone you're married to or in a civil partnership with (and not separated), or someone you're living with as if you were. If your relationship status changed during the year, the charge may not apply for every week.
• The discovery assessment itself is invalid. While the Wilkes defence on section 29(1)(a) is closed, HMRC still needs to prove a valid discovery and a valid exercise of the assessment power. In Brown, the tribunal found HMRC hadn't satisfied the burden of proof—there was no evidence about who actually made the assessment.

You normally have 30 days to appeal from the date of the assessment. If you've missed that deadline, you can make a late appeal, but you'll need to explain the delay.

Appealing The Penalties

Penalty appeals are where HICBC cases are most commonly won. The key defence is reasonable excuse—and the tribunals have developed a clear body of case law on what that means in the HICBC context.

The Upper Tribunal in Perrin v HMRC [2018] UKUT 156 (TCC) at paragraph [82] established that ignorance of the law can be a reasonable excuse. The tribunal must decide whether it was "objectively reasonable for the particular taxpayer, in the circumstances of the case, to have been ignorant of the requirement in question."

This paragraph is central to HICBC penalty appeals. Here's what the case law shows:

Cases where reasonable excuse was found:

• Belloul v HMRC [2020] UKFTT 312 (TC)—PAYE employee, never in Self Assessment, received no direct notification from HMRC or the Child Benefit Office. The tribunal found his ignorance of HICBC was a reasonable excuse and was critical of HMRC for citing Perrin but omitting paragraph [82].
• Jacques v HMRC [2020] UKFTT 311 (TC)—PAYE employee, spouse had claimed child benefit since 2005. The tribunal noted the important difference between self-assessment taxpayers (who see HICBC guidance in return notes) and PAYE employees (who do not).
• Hill v HMRC [2020] UKFTT 316 (TC)—the appellant "had been in effect lulled into a false sense of security" by inadequate official information. The tribunal found the combination of poor communication and HMRC's long delay in notifying him amounted to a reasonable excuse.
• Brown v HMRC [2024] UKFTT 245 (TC)—wife's last child benefit claim predated HICBC. No subsequent HMRC communications received. Appeal allowed in full, including on the validity of the discovery assessments.

Cases where reasonable excuse was not found:

• Ramsdale v HMRC [2020] UKFTT 155 (TC)—the tribunal found Mr Ramsdale probably received HMRC's letter in August 2013 and couldn't explain his belief that his wife had stopped claiming child benefit.
• Legg v HMRC [2023] UKFTT 994 (TC)—HMRC sent a nudge letter to his correct address; he didn't respond for over a year. The tribunal found HICBC was widely publicised and his ignorance wasn't objectively reasonable.

The pattern is clear. Tribunals have found a reasonable excuse where appellants genuinely received no notification from HMRC and were outside Self Assessment. But if HMRC can show you received a nudge letter, a direct communication, or were already in Self Assessment, the defence becomes much harder to establish.

Special Reduction

Even if you don't have a reasonable excuse, HMRC has a discretionary power under paragraph 14 of Schedule 41 to reduce a penalty because of "special circumstances." Ability to pay is not a special circumstance, but other unusual facts of your case might be. If HMRC refuses a special reduction, the tribunal can review that decision—though it applies judicial review principles rather than substituting its own view.

Most HICBC appeals fall into the Default Paper or Basic category at the tribunal, which means a straightforward process with no costs risk—you won't be ordered to pay HMRC's legal costs even if you lose. Many HICBC appellants handle the process themselves without a solicitor. If your case does proceed to a hearing, our guide to preparing for your tribunal hearing covers what to expect.

Opting Out vs Stopping Child Benefit

If you're liable to HICBC going forward, you have two options—and the difference matters.

You can opt out of receiving child benefit payments while keeping the claim active. If no payments are made, no HICBC arises (section 681E(1)(a) ITEPA 2003). But crucially, the claim itself stays in place. This matters because:

• National Insurance credits. The parent who claims child benefit gets NI credits that count towards their State Pension. This is vital for parents who are at home caring for children and not building up NI credits through employment. If you stop claiming entirely, these credits are lost.
• Automatic National Insurance number. Children receive their NI number automatically at age 16 if child benefit has been claimed for them. Without a claim, you'll need to apply separately.

The key point: the NI credits are linked to the claim, not the payments. A parent who doesn't claim at all loses a valuable State Pension entitlement.

You can opt out or restart payments through GOV.UK.

What To Do Now

If you've received HICBC assessments or penalties, here are the steps to work through:

1. Check the deadline on your assessment or penalty notice. You have 30 days from the date of the decision to appeal. Don't let this pass without acting.

2. Calculate your actual adjusted net income for each year. Check whether HMRC has accounted for pension contributions, Gift Aid, and salary sacrifice. If your adjusted net income was below the threshold (£50,000 for years up to 2023–24, £60,000 from 2024–25), you may not owe the charge at all.

3. Check the penalty calculation. Verify that HMRC has applied the correct minimum percentage and given proper credit for disclosure quality. For non-deliberate, prompted disclosure, the minimum should be 10% or 20% depending on timing.

4. Consider requesting a statutory review. A different HMRC officer reviews the decision independently. This is free and must be completed within 45 days. It doesn't prevent you from going to the tribunal afterwards.

5. If the review doesn't resolve things, appeal to the tribunal. There is no fee to appeal. Our guide to appealing to the tax tribunal walks you through the process step by step. If the deadline has already passed, read our guide on how to make a late appeal.

6. For future years, decide how to handle child benefit. If your income is likely to stay above the threshold, consider opting out of payments while keeping the claim active for NI credits. If your income fluctuates around the threshold, pension contributions may bring you below it.

7. Use the new PAYE service if eligible. If HICBC is the only reason you'd need to file Self Assessment, the September 2025 PAYE payment service may simplify your ongoing obligations.

For a broader view of how HICBC fits into the dispute process, see our complete tax dispute timeline.

This article is for informational purposes only and does not constitute legal or tax advice. For advice specific to your situation, consult a qualified tax adviser, accountant, or solicitor.