Official Child Benefit contact numbers
For help with a Child Benefit claim, payment or change of circumstances, call the official HMRC Child Benefit helpline. The numbers below are published by HMRC on GOV.UK and were checked on 5 August 2026.
| Contact route | Official number or address | Best used for |
|---|---|---|
| Calling from the UK | 0300 200 3100 | Claims, missing payments, changes and general enquiries |
| Calling from outside the UK | +44 161 210 3086 | Child Benefit enquiries when abroad |
| Relay UK | 18001 then 0300 200 3100 | People who cannot hear or speak on the telephone |
| Post | HM Revenue and Customs — Child Benefit Office, PO Box 1, Newcastle upon Tyne, NE88 1AA, United Kingdom | Documents or correspondence that cannot be submitted online |
Fraud warning: HMRC advises taxpayers not to disclose passwords, one-time security codes or full banking credentials to an unexpected caller. If you are unsure, end the call and use the Child Benefit contact details published directly on GOV.UK.
Check whether you need to phone HMRC
Calling is not always the quickest route. HMRC says several Child Benefit tasks can be completed through its online services or the HMRC app, including viewing payment information and updating certain personal details.
- Use your online account: check claim and payment information where the service is available.
- Call HMRC: use the helpline for a payment you cannot identify, a claim delay or a change that cannot be reported online.
- Write to HMRC: use post when HMRC requests original evidence or tells you to reply by letter.
- Report suspected fraud separately: follow the official GOV.UK process rather than discussing another person's claim on the general helpline.
If Child Benefit is part of a wider income squeeze, use SupportFund's benefits calculator guide to check whether your household may qualify for other help. Child Benefit can interact with tax and benefit decisions, so enter household information accurately.
What to prepare before calling
HMRC must establish that it is speaking to the claimant or an authorised representative before discussing personal information. Having the right records nearby can prevent an inconclusive call.
- Your National Insurance number.
- Your Child Benefit reference, if shown on an HMRC letter or bank payment.
- Your child's full name and date of birth.
- The date and amount of any payment you are querying.
- Relevant letters, claim submission details or change-of-circumstances records.
- Your current address and previous address if you have recently moved.
Practical tip: write down the date of the call, the adviser’s name or identifier where provided, and any action HMRC agrees to take. Keep copies of forms and supporting evidence rather than relying solely on a telephone conversation.
If an interrupted payment has left you unable to meet essential costs, review emergency household support options while HMRC investigates. Local assistance is discretionary and does not replace the Child Benefit decision process.
Common reasons to contact the Child Benefit Office
A claim has not produced a payment
First check your HMRC account, bank statement and any recent letters. If the expected information is absent or HMRC requested evidence that you already supplied, call with the submission date and delivery evidence available.
Your circumstances have changed
HMRC requires claimants to report relevant changes, such as a new address, altered bank details, a child leaving approved education or training, or the claimant leaving the UK. GOV.UK provides the definitive list because the reporting duty depends on the circumstances.
You need to make a new claim
HMRC states on GOV.UK that eligible claims may generally be backdated by up to 3 months. Do not delay a claim while waiting for unrelated benefit decisions, because backdating beyond the permitted period is not normally available.
Your household income has changed
Child Benefit and the High Income Child Benefit Charge are administered through different HMRC processes. Check the current tax-year thresholds and rules directly on GOV.UK before deciding whether to claim, receive payments or opt out of payments.
If Child Benefit does not cover the shortfall
A delayed or disputed Child Benefit payment can expose a wider budget gap, particularly where food, energy and school costs are due together. SupportFund.co.uk helps households identify practical safety-net options without treating emergency support as a substitute for money legally owed by HMRC.
- Check Universal Credit entitlement and ensure children are correctly recorded on the claim.
- Ask your local authority about locally funded crisis support and eligibility rules.
- Review Council Tax Reduction separately because it is administered by local councils.
- Contact creditors early if the delay threatens rent, energy or priority bills.
Start with SupportFund's household budget planner to separate urgent priority payments from costs that may be renegotiated. Keep pursuing HMRC if the underlying Child Benefit issue remains unresolved.
Rates and rules can change: confirm all current Child Benefit amounts, tax thresholds, contact details and eligibility conditions on GOV.UK before acting.