Income Tax: enquiries
Source: gov.uk (2025-07-01)

Contact HMRC for help with questions about PAYE and Income Tax, including coding notices and Marriage Allowance and for advice on savings (including ISAs) and claiming tax back on interest.

If you think your tax code is wrong, you can check if the tax on your payslip is correct (https://www.gov.uk/guidance/check-if-the-tax-on-your-payslip-is-correct). If you have paid too much tax, it will be used to reduce the amount of tax you have to pay the next time you are paid.

Online

Ask HMRC’s digital assistant (https://www.tax.service.gov.uk/ask-hmrc/chat/paye) to find information about:
- PAYE
- tax codes
- claiming a tax refund
- proof of employment history
If the digital assistant cannot help you, you can ask to transfer to an HMRC adviser if they’re available.

Tell HMRC about changes that could affect your tax code (https://www.gov.uk/check-income-tax-current-year) This service is part of the personal tax account (https://www.gov.uk/personal-tax-account), and you can use it to check:
- your tax code
- the information HMRC holds about your employment
- an estimate of how much tax you’ll pay
Find out how to tell HMRC about a change to your personal details (https://www.gov.uk/tell-hmrc-change-of-details).

Check when you can expect a reply from HMRC (https://www.gov.uk/guidance/check-when-you-can-expect-a-reply-from-hmrc) Find out when you can expect to receive a reply from HMRC to a query or request you’ve made.

If HMRC needs to contact you about anything confidential they’ll reply by phone or post.

You can also find out information in:
- the official HMRC app (https://www.gov.uk/guidance/download-the-hmrc-app)
- your personal tax account (https://www.gov.uk/personal-tax-account) or business tax account (https://www.gov.uk/guidance/sign-in-to-your-hmrc-business-tax-account)
If you think you have overpaid tax

Before you contact us you can:
- find out more about tax overpayments and underpayments (https://www.gov.uk/tax-overpayments-and-underpayments)
- check how much Income Tax you should have paid in a previous tax year (https://www.gov.uk/check-income-tax)
- see if you can claim a tax refund (https://www.gov.uk/claim-tax-refund)
X (previously known as Twitter)

You can use X to ask HMRC questions. We cannot discuss specific cases or individual tax affairs, so do not give any personal details.

Start your post with @HMRCcustomers

Opening times:
- Monday to Friday: 8am to 8pm
- Saturday: 8am to 4pm
Closed bank holidays (https://www.gov.uk/bank-holidays).

Phone

Call HMRC for help with:
- your tax code (https://www.gov.uk/tax-codes)
- tax overpayments or underpayments
- a P800 tax calculation — find out more about tax overpayments and underpayments (https://www.gov.uk/tax-overpayments-and-underpayments)
- identification and verification problems if you’re trying to register for a personal tax account
- your circumstances have changed
- you want to change to paying the charge through Self Assessment
- making a backdated claim if your spouse or civil partner has died
- applying for Marriage Allowance if you do not have a National Insurance number, because you do not intend to work or study in the UK
- cancelling your claim
- questions about tax on savings income (including refunds)
- general enquiries about Individual Savings Accounts (ISAs)
- proof of your UK tax status (for example, a certificate of residence)
Have your National Insurance number with you when you phone.

Before you call

This helpline uses speech recognition software, so you will be asked why you are calling HMRC. If you cannot use speech recognition software, find out how to get help from HMRC if you need extra support (https://www.gov.uk/get-help-hmrc-extra-support).

This helpline may also ask you some security questions. Make sure your personal details and address are up to date in your personal tax account (https://www.gov.uk/personal-tax-account) or you could fail telephone security. If you do not have a personal tax account, you can create one before you check your details.

HMRC may ask if you want to add voice identification to your account. You can find out more in the Voice Identification Privacy Notice (https://www.gov.uk/government/publications/voice-identification-privacy-notice).

You can use Relay UK if you cannot hear or speak on the phone, dial 18001 then xx-xxxx-xxxx. Find out more on the Relay UK website (https://www.relayuk.bt.com/).

Get help from HMRC if you need extra support (https://www.gov.uk/get-help-hmrc-extra-support).

Telephone: xx-xxxx-xxxx

Outside UK: xx-xxxx-xxxx

Opening times: Monday to Friday: 8am to 6pm. Closed bank holidays (https://www.gov.uk/bank-holidays).

Find out about call charges (https://www.gov.uk/call-charges)

Post

Write to HMRC at this address for PAYE and Income Tax queries.

There is a different way to:
- make a complaint about HMRC (https://www.gov.uk/government/organisations/hm-revenue-customs/contact/complain-about-hmrc)
- report tax fraud (https://www.gov.uk/report-tax-fraud)
You do not need to include a street name, city name or PO box when writing to this address.

Couriers should use a different address (https://www.gov.uk/government/organisations/hm-revenue-customs/contact/couriers).

Pay As You Earn and Self AssessmentHM Revenue and CustomsBX9 1ASUnited Kingdom

Related content

Guidance
- Check how to claim a tax refund (https://www.gov.uk/claim-tax-refund)
- Tax overpayments and underpayments (https://www.gov.uk/tax-overpayments-and-underpayments)
HMRC contacts
- Non-UK residents Income Tax and Capital Gains: enquiries (https://www.gov.uk/find-hmrc-contacts/non-uk-residents-income-tax-and-capital-gains-enquiries)
- Self-employment and Income Tax: enquiries (https://www.gov.uk/find-hmrc-contacts/self-employment-and-income-tax-enquiries)
- Treth Incwm, Hunanasesiad a mwy (https://www.gov.uk/government/organisations/hm-revenue-customs/contact/welsh-language-helplines)