Can foster carers claim tax allowances for previous tax years?

A past-year claim for foster care tax relief is normally dealt with through the tax return for the relevant tax year, or by asking HMRC to correct an overpayment where the return has already been filed. The correct route depends on whether you submitted a Self Assessment return, whether the amendment deadline has passed and whether your fostering arrangement qualified for Qualifying Care Relief in that year.

How the claim is usually made

• If you have not filed the return: you may need to register for Self Assessment and submit a return for the relevant year, including your fostering receipts and the Qualifying Care Relief calculation.
• If you filed a return recently: you may be able to amend it within HMRC’s amendment window. The revised figures should show the relief that was missed and any resulting change to the tax calculation.
• If the amendment window has closed: an overpayment relief claim may be available if you paid too much tax because the relief was not included. This is a separate claim with its own conditions and deadline, so it should not be treated as a late amendment.

In many cases, the deadline for an overpayment relief claim is four years after the end of the tax year in which the overpayment arose. The relevant date can depend on the circumstances, and special rules may apply where HMRC made an error or provided incorrect information. Check the current HMRC guidance before relying on a deadline.

What to check for each previous tax year

Review each year separately rather than applying one calculation to all previous years. Qualifying Care Relief is based on the fostering activity and the rules applying during that particular tax year. Check that:

• you were carrying on a qualifying foster care arrangement during the year;
• the payments were connected with approved fostering rather than a different type of care or support;
• you have identified all fostering payments and any other income that needed to be reported;
• the relief has been calculated using the qualifying amount for that year; and
• the figures are entered in the correct Self Assessment sections.

The calculation generally starts with fostering receipts and deducts the available Qualifying Care Relief before taxable profit is considered. The amount can depend on factors such as the number and age of children placed and the period for which care was provided. If more than one foster carer in a household is making a claim, the allocation and reporting should be consistent with the actual arrangement and the records held.

Records that can support a retrospective claim

Gather records before changing a return or contacting HMRC. Useful evidence may include fostering payment statements, placement dates, approval or agency records, correspondence, bank statements and details of any periods when a placement was not in the household. Keep a year-by-year schedule showing total receipts, the relief used and the figure included on the tax return.

Do not estimate simply from the amount paid into your bank account. Statements may combine different payments, adjustments or amounts relating to more than one period. Where records are incomplete, ask the fostering service whether it can provide historical payment information and clearly label any figures that have been reconstructed.

What happens if tax was underpaid?

A review may show that too little tax was paid, rather than too much. For example, other taxable income may have been omitted, or the relief may have been claimed for a period that did not qualify. In that situation, the return may need correcting and additional tax, interest or penalties could arise. It is better to establish the full position for each year before submitting a claim.

Qualifying Care Relief does not automatically create a repayment. It reduces the taxable amount from qualifying care activity, but the final result also depends on your wider income, tax already deducted and the information on your return. Any unused relief should be treated according to the rules for that tax year rather than assumed to transfer to a later year.

Getting the claim checked

HMRC can explain the procedure and the evidence it expects, but it cannot provide regulated personal tax advice. A qualified tax adviser with experience of foster carer tax can check historic calculations, identify the correct claim route and consider whether amendments or overpayment relief are available. This can be particularly useful where you have several years to review, more than one source of income, a joint fostering arrangement or a previous tax return prepared by someone else.

Keep copies of every amended return, claim form, calculation and supporting document. If HMRC asks questions, answer them using the records for the specific tax year rather than relying on a current-year calculation.