Telephone:
0300 200 3310
Textphone:
0300 200 3319
Outside UK:
+44 161 931 9070
Have your National Insurance number with you when you phone.
Call HMRC:
- for help with questions about Income Tax and Class 4 National Insurance, including issues with:
- your tax code
- tax overpayments or underpayments
- a P800 tax calculation
- to get help with identification and verification problems if you’re trying to register for a personal tax account
- to make a backdated claim for Marriage Allowance if your spouse or civil partner has died
- to apply for Marriage Allowance if you do not have a National Insurance number, because you do not intend to work or study in the UK