{"id":1781,"name":"HMRC Self Assessment","slug":"hmrc-self-assessment","description":"HMRC's Self Assessment helpline deals with tax return questions, registering for Self Assessment, payments and penalties. Have your Unique Taxpayer Reference (UTR) and National Insurance number ready. Relay UK users can dial 18001 first. Closed on bank holidays.","shortDescription":"HMRC helpline for Self Assessment tax returns, UTRs, payments and penalties.","phoneNumber":"0300 200 3310","alternativePhone":"+44 161 931 9070","email":null,"website":"https://www.gov.uk/self-assessment-tax-returns","address":null,"postcode":null,"categoryId":7,"openingHours":{"friday":{"open":"08:00","close":"18:00"},"monday":{"open":"08:00","close":"18:00"},"sunday":null,"tuesday":{"open":"08:00","close":"18:00"},"saturday":null,"thursday":{"open":"08:00","close":"18:00"},"wednesday":{"open":"08:00","close":"18:00"}},"isPremiumNumber":false,"premiumRate":null,"freeAlternative":null,"logoUrl":null,"featured":false,"contactUrl":"https://www.gov.uk/find-hmrc-contacts/self-assessment-general-enquiries","sourceUrl":"https://www.gov.uk/find-hmrc-contacts/self-assessment-general-enquiries","verifiedAt":"2026-10-23T00:00:00.000Z","verificationStatus":"verified","lastUpdated":"2026-10-23T18:13:37.518Z"}