HMRC Tax Credits Customer Service Number
Phone: 0300 322 9129
Alternative number: +44 300 322 9129
Call cost: Charged at the standard local rate (03), included in most call plans.
HMRC helpline for past Working Tax Credit and Child Tax Credit awards.
HMRC's tax credits line handles questions about past Working Tax Credit and Child Tax Credit awards, including overpayments and final decisions; tax credits ended on 5 April 2025. Have your tax credits details ready for security questions. Relay UK: dial 18001 then the number.
HMRC Tax Credits opening times
| Monday | 08:00–17:00 |
|---|---|
| Tuesday | 08:00–17:00 |
| Wednesday | 08:00–17:00 |
| Thursday | 08:00–17:00 |
| Friday | 08:00–17:00 |
| Saturday | Closed |
| Sunday | Closed |
Website: gov.uk/tax-credits-have-ended
Frequently asked questions
What is HMRC Tax Credits's customer service phone number?
The HMRC Tax Credits customer service number is 0300 322 9129. An alternative number is +44 300 322 9129.
Is HMRC Tax Credits customer service open on Sunday?
No, HMRC Tax Credits customer service is closed on Sundays.
Is HMRC Tax Credits's phone number free to call?
0300 322 9129: It isn't a freephone number, but 03 numbers cost the same as calling a standard 01 or 02 landline and are included in the inclusive minutes on most mobile and landline plans.
What are HMRC Tax Credits's opening hours?
Friday: 08:00–17:00, Monday: 08:00–17:00, Tuesday: 08:00–17:00, Thursday: 08:00–17:00, Wednesday: 08:00–17:00
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