HICBC. With the escape route.

How HICBC actually works in 2026

The High Income Child Benefit Charge was introduced in January 2013 with a threshold of £50,000 — and stayed there for over a decade despite wage inflation, dragging more and more households into the charge each year. In April 2024 it finally moved: the threshold rose to £60,000 and the full-clawback line shifted from £60k to £80,000. The taper also halved in steepness — from 1% per £100 to 1% per £200 — meaning families now retain partial Child Benefit across a £20,000 income band where previously they retained none above £60k.

The charge is calculated on the higher-earning partner's adjusted net income (ANI), not gross salary. HMRC's specific definition of ANI is materially different from your P60 figure — and the difference is the entire planning opportunity. ANI = gross income minus pension contributions (gross), minus Gift Aid donations (grossed up by 1.25), minus trading losses. A £75,000 earner who pays £15,000 of pension contributions has ANI of £60,000 — exempt from HICBC.

Who pays the charge

The higher-earning partner pays HICBC, regardless of who claims the Child Benefit. If Partner A earns £55k and Partner B earns £70k, Partner B pays the charge — even if Partner A is named on the Child Benefit claim. This catches some couples out when income spikes mid-year (bonus, share vesting, side-income) and crosses the £60k threshold for the first time. HMRC use the full-year ANI figure to test eligibility, so income that arrives in March still counts against the whole year.

The taper mechanic — and the £200 brackets that matter

Between £60,000 and £80,000, the charge is 1% of full annual Child Benefit for every £200 of ANI above £60,000. HMRC takes the integer part of that fraction — so an ANI of £61,500 means 7% of Child Benefit lost (not 7.5%). An extra £200 of ANI above any multiple of £200 above £60k bumps you up one percentage point. The practical implication: pension contributions of just under £200 don't move the needle, but a contribution that crosses a £200 boundary will.

The pension escape route — and why it's the most efficient relief in the UK code

Pension contributions reduce ANI pound-for-pound. In the £60k–£80k HICBC band, the marginal benefit of every £1 contributed to a pension is:

• 40% income tax relief (you're a higher-rate taxpayer in this zone)
• + the HICBC saving — for a 2-child household, that's ~£11.26 of HICBC saved per £200 of contribution (at full-claw level), or about 5.6% of contribution
• Effective relief: ~46% per £1 contributed

For families with more children, the effective relief is higher — a 4-child household saves ~£17 per £200, pushing effective relief to ~48-49%. This is the strongest argument for higher-earner salary sacrifice into a pension in the UK code today.

The £100k tax trap stacker

If your ANI exceeds £100,000, you also start losing Personal Allowance — £1 of PA gone for every £2 of ANI above £100k, fully gone at £125,140. This creates a 60% income tax rate in that band (40% higher rate + 20% PA recovery). For a high earner who also has HICBC exposure, the marginal cost of an extra pound of income between £100k and £125,140 with kids on Child Benefit is roughly:

• 40% income tax + 20% PA recovery + 2% employee NI (above £50,270) = 62% baseline marginal rate
• + HICBC fraction of Child Benefit lost (depends on where in the £60k-£80k band you sit AFTER pension contributions)

The flip side: pension contributions in this stacked zone get unusually high effective relief — often 60–65% per £1 contributed (40% tax + 20% PA recovered + HICBC saved). For a high-earner parent in this zone, salary-sacrificing into a pension is the single most lucrative move available in the UK tax system.

Don't just cancel Child Benefit — opt to receive £0 instead

A common mistake: a family realises they'll pay HICBC equal to the Child Benefit and cancels the claim entirely to "save the paperwork". This loses them National Insurance credits that the claiming partner (typically a non-working or low-earning parent) earns automatically while the youngest child is under 12. Each lost year of credits is a missed qualifying year toward the 35 needed for full new State Pension — worth roughly £337/year of State Pension at today's rates, or about £6,700 over a 20-year retirement.

The correct move: apply for Child Benefit but tick the box saying "I do not want to receive Child Benefit payments". HMRC then registers the claim (preserving NI credits) without paying out, and no HICBC applies because there's no Child Benefit to claw back. You can switch existing live claims to opt-out via your Personal Tax Account.

How to actually pay HICBC

Two routes. Most HICBC-affected households use Self Assessment: register with HMRC if you're not already, file a return by 31 January following the end of the tax year, and pay the charge then. The first year of HICBC liability always requires Self Assessment; once HMRC has the data, they can collect future years via a PAYE tax code adjustment instead, if you ask them to. The tax-code option pays in arrears (so HICBC for 2025/26 lands in your 2026/27 code) — useful for cash-flow if you'd rather not stockpile the money for a Self Assessment payment.

Things this tool deliberately doesn't model

• Mid-year income changes. The tool assumes constant ANI across the tax year. If your income varies significantly mid-year, run the calculator with your full-year projection — that's what HMRC will use.
• Self-employed Class 4 NI interactions. Self-employed earners have Class 4 NI bands; the tool focuses on the HICBC charge itself, which depends on ANI not NI.
• Divorced / separated households. HICBC eligibility resets if the couple is no longer living together as partners. The "couple" definition is HMRC's: married, civil-partnership, or cohabiting in a manner equivalent to marriage.
• Foster-care payments and Child Benefit eligibility. If foster-care or kinship-care payments stop Child Benefit from being claimed, there's nothing to claw back.
• Scottish / Welsh income tax interactions. HICBC uses ANI not income tax bands, so the calculation is the same UK-wide. The figure of "income" in the calc means total UK taxable income, not country-specific.