Figures relate to tax year 2025-26 (UK) · 2025 (US)
You are American, you live in Britain, and you are adopting a child here. The adoption credit is worth more than most people expect.
Whether you can use it turns on a choice you probably made years ago about a different relief.
Nobody warns adoptive parents about that, and by the time it matters the year has usually closed.
Key takeaways
- The credit covers qualified adoption expenses up to a cap.
- It applies to an adoption completed abroad.
- Most of it is non-refundable, so it needs tax to offset.
- The earnings exclusion often leaves no tax to offset.
- Unused credit carries forward for five years.
- Claiming the foreign tax credit instead can rescue it.
- UK adoption pay is taxable income in America.
- Keep every receipt, because the claim is documentary.
What is the US adoption credit?
A credit against American tax for the costs of adopting a child. According to IRS guidance, it covers court costs, legal fees, travel and other expenses tied to a legal adoption. For 2025 the cap stood at $17,280 per child.
Our guide to the child tax credit abroad covers the other family credit.
It is per child rather than per year.
Does it apply to an adoption in Britain?
Yes, because the credit follows the adopter rather than the country. An American citizen adopting through a British local authority or agency can claim it on the same terms as somebody adopting in Ohio. The child need not be American.
Our guide to a child born abroad covers citizenship for children.
Foreign adoptions have their own timing rule.
When can you claim it?
For a foreign adoption, only once it becomes final, which differs from the domestic rule. You claim expenses from earlier years in the year it finalises, not when you paid them. So several years of cost land on one return.
Our guide to US tax deadlines for expats covers the filing dates.
A domestic adoption allows earlier claiming.
What counts as a qualified expense?
Court and legal fees, agency charges, travel including meals and lodging, and other costs tied to the adoption. But costs for a stepchild do not count. Nor does anything an employer or a public scheme paid back.
Our guide to tax-free childcare for US citizens covers another family scheme.
Keep invoices in sterling with their dates.
Where the credit goes
| Question | Position |
|---|---|
| Maximum per child | $17,280 |
| Refundable | Largely not |
| Carry forward | Five years |
| Foreign adoption timing | Year it becomes final |
| Income limit | Phases out at higher incomes |
| With the earnings exclusion | Usually unusable |
Why does the exclusion block it?
Because a non-refundable credit needs an American tax bill to reduce. But the exclusion removes the income that creates one. So if your salary is fully excluded you owe nothing, and the credit simply sits there.
Our guide to Form 2555 and the exclusion covers the relief.
In our practice this catches almost every adoptive parent abroad.
A worked example
Take an illustrative case. An American couple in Leeds finalise an adoption after two years and several thousand pounds of costs.
Both claim the earnings exclusion, so their American tax for the year is nil.
The credit is computed, found to exceed their liability, and carried forward with nothing to use it against.
Had they claimed the foreign tax credit instead, a small American liability would have remained and part of the adoption credit would have been usable.
Can switching reliefs rescue it?
Sometimes, and it is the main planning point here. Using the foreign tax credit rather than the exclusion can leave a small American liability that the adoption credit then reduces. The arithmetic needs doing before the return is filed.
Our guide to Form 1116 income baskets covers the credit.
Revoking the exclusion has consequences for later years.
What is the five year carry forward?
You can carry unused credit forward for five years and set it against American tax then. So for anybody who expects to return to America, or to drop the exclusion, that window has real value. After five years it lapses.
Our guide to foreign tax credit carryovers covers a similar mechanism.
Track the carry forward on every subsequent return.
Is any of the adoption credit refundable?
A portion became refundable from 2025, which helps families with no American tax to offset. Still, the refundable slice is capped well below the full credit. So most of it still needs a liability.
Our guide to US filing thresholds for expats covers who files.
Check the current year's rules, because this area moved recently.
Is there an income limit?
Yes, and it bites at higher incomes. The credit phases out above a threshold and then vanishes. Crucially, the measure adds back excluded foreign earnings, which catches people who thought the exclusion kept them under it.
Our guide to the personal allowance taper covers a British equivalent.
Excluded income still counts towards the limit.
What about UK adoption pay?
Statutory adoption pay is taxable in both countries. It goes on your return like any other earnings, and the exclusion can cover it if you qualify. Leave itself changes nothing about the credit.
Our guide to UK maternity pay and US tax covers the equivalent.
Employer top up pay is taxable too.
Does Britain give any adoption relief?
Not a tax credit for costs, which surprises Americans used to one. Instead, British support comes through adoption pay, leave rights and local authority allowances. Means-tested allowances are usually not taxable here, though an American return may still have to report what you received.
Our guide to UK state benefits and US tax covers allowances.
An allowance may still be American income.
Does the child need a US number?
To claim most credits, yes, and that takes time. A child who becomes an American citizen can get a social security number. Others may need a taxpayer identification number instead, so start early.
Our guide to ITIN applications from the UK covers the process.
A missing number is a common cause of a rejected claim.
Does the child become American?
Not automatically through a British adoption, and immigration law decides it rather than tax. But where citizenship does follow, the child joins the American tax system with everything that implies. That is worth understanding before it happens.
Our guide to the accidental American covers unexpected citizenship.
Take immigration advice separately from tax advice.
What if an employer helps with costs?
An employer scheme can keep assistance out of your income up to a limit. But you cannot claim the credit for the same expense as well. So where both apply, you split the costs between them.
Our guide to benefits in kind and US tax covers employer provision.
British employer support is usually leave rather than cash.
Does a failed adoption still qualify?
For a domestic adoption you can still claim the costs of an attempt that failed. For a foreign one you generally cannot, because the credit waits for finalisation. That difference is harsh, and it is the rule.
Our guide to amending a US return covers correcting a claim.
Keep the records anyway, in case circumstances change.
What about adopting a relative's child?
That can qualify, as long as the child is not your spouse's. The rules exclude a stepchild, though a niece, nephew or unrelated child is fine. So the relationship decides it rather than the route.
Our guide to US gift tax for expats covers family transfers.
Special needs rules apply only to American adoptions.
How long should you keep records?
Until the carry forward ends, which can mean six or seven years after finalisation. The claim rests on documents, and the IRS does ask for proof on larger ones. Receipts in sterling need their rates too.
Our guide to exchange rates on a US return covers conversion.
Scan the adoption order as well as the invoices.
Should you plan the timing?
Where the finalisation date can move, pushing it into a year with American tax to pay makes the credit usable. Few adoptions allow much flexibility. Still, raise it with your adviser early rather than late.
Our guide to the UK tax year difference covers the two calendars.
The American year is what matters for the claim.
Does the adoption credit affect state tax?
Only if a state still treats you as resident. Some states offer their own adoption relief and most do not. So check the last state you lived in, because a lingering filing there may carry its own credit.
Our guide to state tax for expats covers the states.
No state follows the federal rule automatically.
What if only one parent is American?
Then only that parent can claim, and the filing status matters. A couple filing separately because one is British may find the income limit bites harder. Running the numbers both ways is worth an hour.
Our guide to a nonresident alien spouse covers mixed couples.
Filing jointly brings the other spouse into the US system.
Does fostering first change anything?
Fostering payments are not adoption expenses, and British fostering allowances follow their own rules. Once the adoption begins, costs from that point can qualify. The dividing line is when the adoption process starts.
Our guide to the US-UK tax treaty covers a related point.
Keep the two sets of paperwork apart.
Can you claim for more than one child?
Yes, because the cap applies per child. Siblings adopted together each carry their own limit, which can make a large claim. That also makes the exclusion problem larger, since more credit needs more liability.
Our guide to head of household for expats covers filing status.
A sibling group can produce a five figure credit.
How long does an adoption take here?
Often two years or more from approval to order. That timescale is why costs spread across several American tax years before the single claiming year arrives. Plan the tax position across the whole period rather than at the end.
Our guide to a second opinion on an expat return covers reviewing past years.
Start the tax conversation at approval, not at finalisation.
Is professional advice worth it here?
For a five figure credit, yes, because the decision between two reliefs is worth more than the fee. The claim itself is a short form. The value sits entirely in choosing the right year and the right relief.
Our guide to choosing a US-UK tax accountant covers who to use.
Ask whether they have claimed one for an expat before.
What if you already filed without it?
Amend, if the year is still open. Three years from filing is the usual window for a refund claim. Plenty of adoptive parents discover the credit afterwards and recover it that way.
Our guide to registering for Self Assessment covers a related point.
Gather the receipts before you amend anything.
Does the credit cover an international adoption?
It covers adopting a child from anywhere, including a third country, as long as you finalise it. The rules on timing are the same as for a British adoption. So the year the order is made is still the year you claim.
Our guide to leaving the UK for a third country covers moving on.
Travel costs to the child's country usually qualify.
What happens if you move back to America?
Then the carry forward becomes genuinely useful, because you will have American tax to set it against. Families who expect to return often find the credit pays off two or three years later rather than at once.
Our guide to moving back to the US covers the return.
Carry the figure forward on every return in between.
Is the child's own filing affected?
Only once they are American and have income of their own. A young child with a British savings account can cross the threshold sooner than parents expect. The adoption itself creates no filing for them.
Our guide to Junior ISAs and US child tax covers children's savings.
Check the position before opening anything in their name.
What does the claim form need?
The child's details, the dates, the expenses by category, and the finalisation year. It goes in with the return rather than separately. Where a tax number for the child is still pending, that usually delays the whole return.
Our guide to IRS math error notices covers rejected claims.
A missing child number is the commonest rejection.
Who should look at this first?
Anybody approved to adopt who has not yet finalised. That is the only window where the planning still works. After the order is made, you are reporting rather than deciding.
Our guide to wills for Americans in the UK covers the wider family planning.
Approval is the moment to pick up the phone.
How to claim the adoption credit
- Keep every invoice, receipt and court fee from the start.
- Record the date the adoption became final.
- Convert the costs into dollars at appropriate rates.
- Model the claim against the exclusion and the credit.
- Decide which relief leaves a liability to offset.
- Obtain a tax number for the child before filing.
- Claim on the adoption credit form with the return.
- Track any carry forward for the next five years.
Mistakes and penalties we see with the adoption credit
The first is claiming the exclusion automatically and leaving a five figure credit with nothing to offset.
The second is claiming foreign adoption costs in the year they were paid rather than the year of finalisation.
The third is forgetting that excluded income still counts towards the income limit.
The fourth is losing the carry forward by never tracking it on later returns.
How US UK Tax Accountants helps
We model the return both ways before filing, because the choice between the exclusion and the credit decides whether a five figure relief is worth anything at all.
Then we track the carry forward year by year. Our US federal returns service covers the filing.
If you are adopting here and hold an American passport, get in touch before the adoption is finalised.
Last reviewed 30 October 2026. This article is general information and not personal tax advice, and the figures change each year.
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Official guidance from the IRS, FinCEN and GOV.UK. Thresholds and rates on those pages are updated annually — check the current tax year before relying on a figure.
