Above £60,000 some of it is charged back. Above £80,000 all of it is. So a lot of families decide the form is not worth filling in — and that decision costs far more than the benefit ever would, for a reason that has nothing to do with the arithmetic.
Those are two different things, and almost everybody who decides not to bother has confused them. Claiming and opting out of the payments leaves you with no money arriving and no tax return to file — and it keeps a National Insurance credit for the parent who is at home. Not claiming at all leaves you with no money arriving and gives that credit up.
The credit is the whole point. Each year of it counts toward the State Pension, which needs 35 qualifying years for the full amount. Miss enough of them and the pension is permanently smaller — by more, in most cases, than the benefit was ever worth.
The High Income Child Benefit Charge is measured on whichever parent has the higher adjusted net income — not on the two added together. Two people earning £55,000 each pay nothing at all. One person earning £80,000 with a partner at home pays the whole benefit back.
Between £60,000 and £80,000 the charge takes a slice, rising in a straight line: at £70,000, halfway up, half of it goes. It only reaches the whole benefit at £80,000. The chart further down draws exactly that.
Adjusted net income is measured after pension contributions and Gift Aid, so both reduce the charge as well as the tax. Whether that is the right home for the money is a separate question, and the worked example below prices it rather than assuming it.
A parent at home with a child under 12 receives a National Insurance credit for every year the family claims — whether or not any money is paid. It is granted on the claim, not on the payment.
What one of those years is worth is not a matter of opinion: it is the full State Pension divided by the number of years it takes to earn. The worked example below computes it from the current rules rather than quoting a figure typed onto a page.
Against a benefit that nets to nothing, a credit that pays every year for life is not a close call. That is why "we would only pay it back" is the wrong test, and why this page exists at all.
Everything above is written out by hand. What follows is the same question answered by the calculation engine the app runs — the identical function that produces these figures inside Sonuswealth, rather than a copy of them retyped for a web page. If the two ever disagree, the page is wrong.
Where these figures come from. The benefit, the charge and what a year of National Insurance credit is worth are all computed from the current rules bundle — no rate or threshold is written into this page. Information and guidance only, not personal financial advice.
If both parents already have full National Insurance records, the credit argument does not apply to you and the decision really is just the money.
If the parent at home is employed above the earnings threshold, they are already earning a qualifying year and the credit adds nothing.
Claiming means Self Assessment for the higher earner if a charge applies — registering for it, and filing each year. Opting out of the payments avoids that while keeping the credit.
The credit stops when the youngest turns 12. It is not indefinite, and the years you can still collect are the ones worth counting.