Key Takeaways
You must tell HMRC as soon as your legal name changes - for example after marriage, divorce, or deed poll - so your tax records, PAYE, National Insurance, and benefits stay correct.
In most cases, you update your name through your Personal Tax Account or by contacting the relevant HMRC helpline. You must already have legally changed your name with an identity document such as a UK passport or driving licence.
HMRC will not change your name until they are satisfied you can prove the change. You may be asked to send copies of documents like a marriage certificate, decree absolute, or deed poll.
Delays in telling HMRC can cause issues with PAYE tax codes, Self Assessment returns, National Insurance records, and payments like Child Benefit or tax credits.
Agents such as accountants or tax advisers must also notify HMRC if their firm's name changes, or if they act for you in updating your name across HMRC services.
Introduction: When and Why to Tell HMRC You’ve Changed Your Name
Notifying HM Revenue and Customs of a change of name is important for maintaining accurate records. Whether you live in the UK as an employee, pensioner, sole trader, or benefit claimant, the legal name HMRC holds for you underpins almost every interaction you have with the tax system.
People change their legal name for many reasons: marriage, civil partnership, divorce, gender transition with a Gender Recognition Certificate, deed poll, statutory declaration, or simply correcting an error in existing records. Whatever the trigger, the principle is the same - HMRC needs to know promptly.
HMRC uses your legal name alongside your National Insurance number and date of birth to manage PAYE, Self Assessment, tax credits, Child Benefit, National Insurance contributions, and pension records. A mismatch between any of these identifiers can trigger manual verification, delay correspondence, or cause payment errors.
You should normally update your identity document - for example a passport or driving licence - first, then use that document when asking HMRC to update their records. This sequence makes verification faster and reduces the chance of rejection.
This article focuses on individuals: employees, pensioners, the self-employed, and benefit claimants. There is also a separate angle for tax agents and businesses, which is covered further down.
What HMRC Needs Before They Can Change Your Name
HMRC must be sure your name change is legal and permanent before updating their systems. They will not accept informal names, aliases, or names used only on social media. You need proof of identity to update your details, and that proof must come from recognised official sources.
Here are the common documents HMRC will accept as proof of your new legal name:
Valid UK passport in the new name
UK photocard driving licence in the new name
Biometric residence permit showing the new name
Other government-issued identity document
In addition to an identity document in your new name, you will usually need a supporting document that creates a clear link between your old name and your new one. Acceptable documents for a name change include a marriage certificate and deed poll, but HMRC also recognises:
Civil partnership certificate
Decree absolute (divorce)
Gender Recognition Certificate
Statutory declaration
Adoption certificate or order
You must provide official evidence linking your new name to your old name. If your name has changed more than once - for example from birth name to married name, then to a deed poll name - you may need evidence for each step, or a statutory declaration covering the full chain.
Names used informally on social media or email addresses are not enough. HMRC will always work from the legal name shown on your official documents.
If HMRC asks you to send documents by post or secure upload, make clear, readable copies or scans. Always keep originals safe and never send irreplaceable documents unless specifically instructed.
How to Change Your Name with HMRC as an Individual
You can notify HMRC of a name change online or via phone. The method you choose depends on your circumstances, your access to online services, and whether HMRC can verify your identity electronically. Your National Insurance number remains the same after notifying HMRC of a name change - only the name attached to it is updated.
The three main routes are:
Online through your Personal Tax Account on GOV.UK
Phone by calling the relevant HMRC helpline
Post by sending documents with a covering letter
Using Your Personal Tax Account
This is the quickest route for many taxpayers and mirrors the way HMRC handles an address change online.
You sign in to your Personal Tax Account on GOV.UK using GOV.UK One Login. Once signed in, navigate to the page that shows your personal details - name, address, and contact information - and follow the on-screen steps to update your name.
You can sign in with a passport or ID card. A biometric residence card can also be used to sign in. You need access to your sign-in email or phone number to complete the authentication process. You must complete the update within 5 minutes to avoid reset of the session, so have your documents ready before you begin.
During the process, you may be asked security questions or to confirm details from your credit record, payslips, or P60 to prove your identity before the name change is accepted.
If the online service cannot complete the change - for example due to a mismatch with identity checks - you will be instructed to call HMRC or send copies of documents by post. This sometimes happens when records from different government databases do not align.
After updating, sign out and log back in later. Check that your updated name appears on your Personal Tax Account dashboard and on any new digital letters from HMRC. Some older correspondence already in the print queue may still show your previous name until the next batch cycle.
Updating Your Name by Phone or Post
Some people still need or prefer to change their name with HMRC by phone or post, especially if they have limited online access or if the online verification has failed.
When phoning, have the following ready:
Your National Insurance number
Your date of birth
Your full old name and full new name
Your Unique Taxpayer Reference (UTR), if you file Self Assessment
The relevant helplines are:
Service | Phone Number | Hours |
|---|---|---|
Income Tax / PAYE | 0300 200 3300 | Mon–Fri, 8am–6pm |
Self Assessment | 0300 200 3310 | Mon–Fri, 8am–6pm |
National Insurance | 0300 200 3500 | Mon–Fri, 8am–6pm |
Child Benefit | 0300 200 3100 | Mon–Fri, 8am–6pm |
HMRC staff may update simple changes over the phone if security checks are passed. For more complex situations, they may request copies of documents to be sent to a specific address.
Letters to HMRC should include your full contact details, National Insurance number, the date the name changed, and clear copies of proof. Send your letter to the office that last contacted you - for example, the Income Tax or Self Assessment office listed on the most recent letter.
Postal changes can take several weeks to be processed. Allow time before important deadlines such as the Self Assessment filing deadline on 31 January or the end of the tax year on 5 April.
Specific HMRC Services Affected by a Name Change
Although HMRC uses shared core records - your National Insurance number, date of birth, and legal name - different services may hold your name on separate systems. That means a change in one area does not always propagate instantly to all others.
It is important to check each relevant area after submitting a name change request. Any name mismatch between HMRC and other systems - for example a ukvi account, DWP benefits record, or payroll software - can slow down cross-checks and cause confusion.
Updating your HMRC name does not automatically change your name with banks, employers, pension providers, the Home Office, or local councils. Each organisation has its own process, and you should work through them separately.
PAYE Employees and Pensioners
PAYE records show the name held by both HMRC and your employer or pension provider. Both must match to keep tax codes and P60s correct.
Employees should notify their employer's payroll department of the new name at the same time as telling HMRC. Your employer may ask to see a new passport or marriage certificate as part of their own payroll procedures.
HMRC will use the updated name on PAYE coding notices (for example P2 tax code notices) and on annual P800 tax calculations where applicable.
Pensioners should also inform their pension provider so that HMRC and the provider hold the same legal name for PAYE on pension income.
Here is an example timeline to illustrate the process:
Step | Date |
|---|---|
Employee marries | June 2026 |
Updates passport | July 2026 |
Notifies HMRC and employer | Mid-July 2026 |
Payroll updated by employer | August 2026 |
First P60 in new name issued | After 5 April 2027 |
Self Assessment and the Self-Employed
Sole traders and those who file Self Assessment tax returns must make sure their HMRC records show their correct legal name for all notices and statements.
You should update your name through your Personal Tax Account or Self Assessment online account. Check that the updated name appears on your next statement of account and SA302 tax calculation.
Invoices and business stationery can show a trading name, but the legal name held by HMRC must match the name on identity documents such as a passport or biometric residence permit.
If registered for Self Assessment or PAYE, your business records may be updated automatically once HMRC processes the name change on your core record. However, this is not guaranteed - always verify.
If you also change your business name, you must follow separate rules for registering or updating the business with HMRC and, if relevant, Companies House.
Check that your name also matches across VAT registrations, Making Tax Digital software credentials, and other HMRC online service accounts you use.
Tax Credits, Child Benefit and Other Payments
People receiving tax credits, Child Benefit, or Guardian's Allowance must inform HMRC of any change of name so that award notices, payment schedules, and compliance checks use the correct details.
Claimants will usually update their name using the online services or helplines dedicated to tax credits or Child Benefit, quoting their reference numbers and National Insurance number.
If a name change is linked to a change in family circumstances - for example marriage, separation, or bereavement - you may also need to report changes in relationship status, income, or who is responsible for a child.
Payments will normally continue during a simple name update. However, HMRC may pause or review claims if wider changes are reported at the same time.
Failing to keep details up to date, including your name, can contribute to overpayments or underpayments that HMRC later corrects - sometimes years down the line.
Tax Agents and Professional Representatives
Accountants, bookkeepers, and tax advisers - collectively referred to as tax agents - have their own responsibilities when a client or the agent firm changes name.
Tax agents must ensure that their own firm name, contact details, and agent codes are updated with HMRC so that authorisations, correspondence, and online services continue smoothly. Since April 2024, agents can manage these updates through their Agent Services Account, including changing the business name, telephone, email, and postal address.
When a client changes their personal name, the agent can usually inform HMRC through existing online agent services or by contacting the relevant HMRC office, provided they hold appropriate authorisation from the client.
Agents should keep copies of the client's name-change documents - for example a deed poll or marriage certificate - on file, in line with data protection rules, in case HMRC requests evidence.
Firms merging or rebranding must also consider updating their details with professional bodies, Companies House, and any other regulators in addition to HMRC. If the legal entity itself changes (for example from sole trader to partnership), a new Agent Services Account must be created.
Interaction with Home Office, UKVI and Other Government Records
A change of name with HMRC sits alongside changes with the Home Office, UK Visas and Immigration (UKVI), DWP, and other departments. None of these systems talk to each other automatically, so you need to update each one separately.
Non-UK nationals should usually update their name with the Home Office and in their ukvi account - including the identity document linked to that account - before asking HMRC to update its records. You can update your details with UKVI online through the relevant immigration service page. Use the most recent document to sign in to UKVI. You may also sign in using a ukvi customer number.
Where a person holds an eVisa or biometric residence permit, the name on that identity document should match the name held by HMRC, employers, and banks to avoid delays in right to work checks or tax queries.
You cannot change your name if waiting for a visa decision. In this case, wait until the immigration decision is made, update your UKVI records, and then proceed with HMRC.
Updating a name with HMRC does not automatically update immigration or visa records. Likewise, changing details in a UKVI account will not by itself update HMRC tax records.
Keeping names consistent across HMRC, UKVI, DWP benefits systems, employers' payroll, and bank accounts minimises administrative problems and avoids triggering unnecessary identity verification delays.
Common Problems, Mistakes and How to Avoid Them
Failing to notify HMRC of a name change can lead to mismatched tax records that take considerable time and effort to untangle. Here are the most common issues people encounter - and how to prevent them.
Contacting HMRC too early. If you reach out before legally changing the name on a passport or other key identity document, HMRC's verification will likely fail. Always update your identity document first.
Only telling the employer. Your employer updating payroll is not the same as HMRC updating their core records. You must inform both separately.
Partial updates. Changing a name on Child Benefit but not on Self Assessment records - or vice versa - creates mismatched files that slow down compliance checks, repayments, and correspondence.
Delays around life events. A name change linked to marriage, separation, or moving abroad can cause confusion if correspondence is addressed to an old name at a new address. Report all changes - including any address change - at the same time where possible.
Poor quality document copies. Illegible scans, laminated documents (where lamination is not part of the original), and untranslated overseas documents are common reasons for rejection. Ensure the content of any document you send is clear and complete.
A practical checklist of organisations to update:
HMRC (all relevant services)
Your employer or pension provider
Banks and building societies
Student Loans Company
Local council (council tax, electoral register)
UKVI / Home Office (if applicable)
DVLA (driving licence)
GP surgery and NHS records
Utility and insurance providers
Working through this list systematically - ideally within a few weeks of the legal name change - will save significant time later.
Frequently Asked Questions
Do I Need to Change My Name with HMRC Before or After Updating My Passport?
In most cases, you should update your legal name on a primary identity document such as a UK passport or biometric residence permit first, then contact HMRC with that updated document as proof.
This order makes it easier for HMRC to verify the change electronically and reduces the need to send physical copies of documents.
If you do not have a passport, you can use other documents like a UK photocard driving licence or an official deed poll as your main evidence. HMRC will still need to see a clear link between your old name and your new one.
Will Changing My Name Affect My Tax Code or the Amount of Tax I Pay?
A name change by itself does not alter your tax code or tax liability. HMRC will continue to calculate tax based on your income, allowances, and reliefs.
The change mainly affects how HMRC addresses letters and how your name appears on PAYE records and tax calculations.
Any change in income, benefits, or employment status that happens at the same time as a name change may still affect your tax code. Make sure all changes are reported accurately so HMRC can issue the correct coding.
How Long Does It Take HMRC to Update My Name?
Online changes made through a Personal Tax Account can appear within a few days on most records, although some letters and forms may still show the old name until the next scheduled update.
Changes made by post or after more complex identity checks can take several weeks, especially around busy periods such as January Self Assessment deadlines or the end of the tax year on 5 April.
Allow extra time if you need the new name to appear on documents for a mortgage application, visa application, or other time-sensitive process.
Can My Accountant or Tax Adviser Change My Name with HMRC on My Behalf?
An authorised tax agent can usually request that HMRC update their client's name as part of managing the tax relationship. HMRC may still require evidence of the name change, and the agent may need to supply details taken from the client's identity document or copies of legal paperwork.
If the client has not formally authorised the agent with HMRC - for example through a 64-8 form or online authorisation - HMRC will not discuss or change personal details such as name with that person.
What If I Only Use My New Name Socially but Have Not Changed It Legally?
HMRC can only record and use a person's legal name, not a nickname or informal name used on social media or in everyday conversation.
The legal name is the one that appears on official documents such as a passport, birth certificate, marriage certificate, deed poll, or biometric residence permit.
If you want HMRC to recognise a new name, you must first complete a legal name change process - for example by deed poll - and then provide HMRC with evidence of that change. Until you do, HMRC will continue to use the information they already hold.
