What name should an Accidental American use on a US tax return if SSA holds an old name?

Use the exact name SSA currently holds for your Social Security number until SSA has updated its record. The IRS says names on a return must match SSA records, and that if you have not changed your name with SSA you should show your former name to avoid delays. Update SSA with Form SS-5 in parallel so later returns can be filed under your current name.

Can I change my name with Social Security while living in the UK?

Yes. SSA serves people outside the United States through Federal Benefits Units at designated US embassies and consulates, and the UK is served from the US Embassy in London. Follow the current instructions on ssa.gov and the embassy's Social Security number page, and submit Form SS-5 with original documents or copies certified by the issuing agency.

Will a UK marriage certificate be accepted by SSA as proof of a name change?

SSA accepts a marriage certificate as evidence of a legal name change, but it must be an original or a copy certified by the issuing agency, such as the General Register Office or local register office. SSA does not accept photocopies or notarised copies. For deed poll changes or older name changes, check SSA's current document list first, as further evidence may be requested.

Do I need to tell HMRC about my name change for US filing purposes?

HMRC does not match your records against the SSA, so there is no US requirement to update HMRC. It is still good practice, and GOV.UK lets you report a name change online or through the HMRC app. Consistent names across HMRC documents make it easier to support foreign tax credit claims on catch-up US returns filed under the streamlined procedures.

Should the name on my FBAR match my streamlined tax returns?

Yes. The FBAR is filed through FinCEN's BSA E-Filing System rather than with the IRS, but the IRS enforces FBAR compliance and reviews streamlined packages as a whole. Using the same name and Social Security number on every FBAR, Form 1040 and the non-wilful certification shows the submission relates to one person and avoids unnecessary questions.

Accidental American: Fix an IRS Name Mismatch

Q: Does updating my US passport also update my name with SSA and the IRS?

No. The Department of State and the Social Security Administration keep separate records and do not update each other automatically. You can hold a US passport in your married name while SSA still holds your birth name. A current US passport is useful evidence for the SSA application, but the SSA record is the one the IRS matches your return against.

An Accidental American whose name on Social Security records differs from the name they use today should fix the Social Security Administration (SSA) record first, then file every US return under the name SSA holds. The IRS checks the name and Social Security number (SSN) on each return against SSA data, so a birth name, maiden name or missing middle name on the SSA file can cause a return to be rejected or delayed. For a UK-raised US citizen catching up on years of missed filings, getting the name right is the step that keeps a streamlined submission moving.

In the returns we prepare for UK-based US citizens, this problem is far more common than people expect. Many Accidental Americans were issued an SSN as a baby, while a US-born parent was still in the country, or were registered years later under a childhood name. Decades on, they use a married surname, a double-barrelled name, an anglicised first name or a middle name that never reached the SSA file. Their UK passport, US passport, HMRC record and bank accounts all agree with each other. The one record the IRS actually relies on does not.

This article covers the name-mismatch problem specifically. If you have never held an SSN at all, that is a different process, covered in our separate guide to the Accidental American with no SSN. Setting up an IRS Online Account from Britain is also covered elsewhere on this site; it depends on identity checks that tend to go more smoothly once your SSA name is correct.

What is an Accidental American name mismatch?

An Accidental American is a person who holds US citizenship by birth in the United States or through a US citizen parent, but who has lived most or all of their life outside the US, often without realising they have US tax and reporting obligations. A name mismatch, in this context, is any difference between the name on the SSA record linked to your SSN and the name you enter on a US tax return or information form.

The differences we see most often in UK files are:

A maiden surname still on the SSA record after marriage in England, Scotland, Wales or Northern Ireland, with the married surname used everywhere else.
A double-barrelled surname used in the UK but recorded by SSA as a single surname, or with the two parts in a different order or without the hyphen.
A first name recorded at birth in one form (for example a full given name) while the person has always used a shortened or anglicised version.
A middle name added, dropped or reordered by deed poll, or a UK change of name deed that was never reported to SSA.
A child's surname from one parent recorded by SSA, followed by a later change of surname in the UK after a family change.
Simple transcription errors on an old SS-5 application, such as a misspelt name or a swapped first and middle name.

None of these differences is a tax problem in itself. They become a filing problem because the IRS processing systems match the name and SSN you file with against what SSA holds.

Why does the IRS care what name SSA holds?

The IRS does not keep its own independent register of taxpayer names for SSNs. It relies on SSA data. The IRS states plainly at https://www.irs.gov/filing/individuals/update-my-information that all the names on a taxpayer's tax return must match Social Security Administration records. In its taxpayer video script on name changes after marriage or divorce, at https://www.irs.gov/newsroom/changed-your-name-after-marriage-or-divorce-youtube-video-text-script, the IRS explains that its computers cannot match a new name with your SSN, that names which do not match can cause problems when a return is processed, and that this can delay a refund.

For an Accidental American catching up on missed filings, the practical consequences are:

An electronically filed return can be rejected at submission if the name control (derived from the surname) and SSN do not match the IRS copy of SSA data, so the return is never accepted.
A paper return may be received but sit in processing while the mismatch is resolved, which slows the whole catch-up package.
A joint return with a non-US spouse can stall if either spouse's name and identification number do not line up with the issuing agency's record.
Later correspondence, transcripts and IRS Online Account access can be harder to obtain if the name you use does not match what the IRS holds.

We deliberately do not quote specific e-file reject codes here. The key point is simpler: if the name and SSN on the return do not match SSA's data, you should expect the IRS to push back, and a streamlined submission is the last place you want avoidable friction.

Should I file under my current name or the name SSA holds?

The IRS answer is to file under the name SSA holds until SSA has updated its record. In its FAQ on name changes and SSN matching at https://www.irs.gov/faqs/irs-procedures/name-changes-social-security-number-matching-issues/name-changes-social-security-number-matching-issues-1, the IRS says you can elect married filing jointly status without changing your name with SSA, that you should make sure the name on your Social Security card matches the name you use on your tax return, and that if you have not changed your name with SSA you will need to show your former name on the return, instead of your married name, to avoid delays.

So there are two workable routes, and the right one depends on timing:

Route one: update SSA first, wait until the SSA record reflects your current name, then file every catch-up return in that name. This is the cleanest result and the one we prefer where time allows.
Route two: if you need to file before the SSA update is complete, file under the exact name SSA currently holds, keep your evidence of the name change in the file, and update SSA in parallel so future years can be filed under your current name.

What we advise against is the third, tempting option: filing under your current UK name while SSA still holds an old one and hoping the IRS will join the dots. That is exactly the scenario the IRS guidance warns about.

A related point from the same IRS FAQ series, at https://www.irs.gov/faqs/irs-procedures/name-changes-social-security-number-matching-issues/name-changes-social-security-number-matching-issues-3: where your Social Security card shows your new name but an information return such as a Form 1099 was issued in your former name, the IRS says to ask the issuer for a corrected form. For UK residents this more often arises with a US brokerage or US-source income statement than with UK payers.

How do you update your name with the Social Security Administration?

The SSA name change is made with Form SS-5, the application for a Social Security card. SSA's page listing the documents needed, at https://www.ssa.gov/ssnumber/ss5doc.htm, is the starting point. In outline, SSA requires:

A completed Form SS-5, showing the name you want on the record.
Evidence of the legal name change, such as a marriage certificate, divorce decree, or court order or other legal document showing the change. The IRS video script above specifically mentions an original or certified copy of a marriage certificate.
Evidence of your identity, which SSA assesses against its own list of acceptable documents; a current passport is commonly used.
Evidence of US citizenship if SSA does not already hold it on your record, which for many Accidental Americans means a US passport or a Consular Report of Birth Abroad.

SSA is strict about the form of documents. Its regulations require documents to be originals or copies certified by the issuing agency, and it does not accept photocopies or notarised copies. For a UK marriage, the practical answer is usually a certified copy issued by the General Register Office or the relevant local register office rather than a photocopy of the certificate from your wedding day. A UK deed poll or change of name deed may need to be considered carefully, because SSA decides which documents it accepts as proof of a legal name change, and the older and less formal the document, the more likely SSA is to ask for further evidence. Where the name change happened a long time ago, SSA may also ask for additional identity documents in the old and new names; check the current list on ssa.gov before sending anything.

One point that surprises clients: SSA records only one name per SSN at any time. If you have changed name more than once, for example a birth surname, a first married name and a later double-barrelled name, you only need to evidence the link from the name SSA holds to the name you want now, but that chain of evidence must be complete. A missing link, such as a first marriage certificate you no longer have, is the most common reason we see these applications stall.

Can an Accidental American update SSA records from the UK?

Yes. SSA serves people living outside the United States through Federal Benefits Units based at designated US embassies and consulates. SSA's international operations pages at https://www.ssa.gov/foreign/ describe the services available abroad, which include Social Security number and card requests, and SSA's regulations provide that people outside the US may submit a request for a change in their record through a Federal Benefits Unit.

The UK is served by the Federal Benefits Unit at the US Embassy in London. We are not going to print a postal address, telephone number or appointment process in this article, because these details change and the consequences of sending original certificates to the wrong place are serious. Use the current contact route shown on SSA's international pages at https://www.ssa.gov/foreign/ and on the US Embassy London's Social Security number page at https://uk.usembassy.gov/social-security-numbers-ssn/, and follow the instructions exactly, including which version of the SS-5 form they want from applicants abroad.

Practical points from files we have worked on:

Build in time. Applications from abroad involve posting or presenting original documents, and SSA does not publish a guaranteed turnaround. Start the SSA update at the very beginning of a catch-up project, not at the end.
Keep your own record of exactly what you sent, including photocopies for your file and proof of postage or delivery.
When the update is processed, ask for written confirmation, such as the new card or an SSA letter, and keep it with your tax file. It is the evidence that justifies filing under the new name.
Do not assume the IRS will reflect the change immediately. There can be a lag between SSA updating its record and the updated data being used in IRS processing; if a return is filed very soon after the change, keep the SSA confirmation to hand.

Worked scenario: a London dual national, a married surname and a streamlined submission

The following scenario is illustrative. The names, dates and facts are invented to show the mechanics and do not describe a real client.

Claire was born in Boston to a British mother and an American father and moved to London as an infant. Her parents obtained an SSN for her before they left, under her birth name, Claire Anne Whitfield. She grew up in the UK, went to university, and now works as a partner in a London corporate law firm. She married in London, took her husband's surname, and later adopted a double-barrelled surname, Whitfield-Hart, by change of name deed. Her UK passport, US passport (renewed some years ago), HMRC record and every UK bank and brokerage account show Claire Anne Whitfield-Hart.

A UK bank asked her to complete a FATCA self-certification and a Form W-9, and she realised she had never filed a US return. She has salaried income, a UK share portfolio and cash accounts that together exceed the FBAR reporting threshold in each recent year. The Streamlined Foreign Offshore Procedures, described at https://www.irs.gov/individuals/international-taxpayers/streamlined-filing-compliance-procedures, are the natural route: three years of delinquent returns, six years of FBARs and the non-wilful certification. The IRS requires a valid taxpayer identification number for returns filed under the streamlined procedures; for a US citizen that means an SSN.

The problem: SSA still holds Claire Anne Whitfield. Had we e-filed three returns and a joint election in the name Whitfield-Hart, the surname-based match against SSA data would have failed. Here is how the file was sequenced:

Week one: we gathered the certified marriage certificate, the change of name deed and her current passports, and checked SSA's current document list to confirm what would be accepted to evidence each step from Whitfield to Whitfield-Hart.
SSA update: Claire followed the Federal Benefits Unit instructions for UK residents and submitted her SS-5 with original or certified documents.
In parallel: we prepared the three years of Form 1040 with the foreign earned income and foreign tax credit analysis, the six FBARs and the Form 14653 certification, without filing anything yet.
Decision point: SSA confirmed the new name before our target date, so every return and FBAR went in as Claire Anne Whitfield-Hart. Had SSA been slower, the fallback was to file the returns in the name SSA held, keep the name evidence in the file, and update the name for later years.
Clean-up: the bank's W-9 and FATCA self-certification were checked against the SSA name, and her HMRC record was confirmed as already matching.

The outcome of the scenario is not a special tax result. It is simply that a well-prepared streamlined submission is not held up by a preventable identity mismatch.

Does the name on my FBAR need to match too?

The FBAR (FinCEN Form 114) is filed with the Financial Crimes Enforcement Network, not the IRS, through FinCEN's BSA E-Filing System. FinCEN's FBAR page, at https://www.fincen.gov/report-foreign-bank-and-financial-accounts, confirms that individuals may file electronically without registering for a BSA E-Filing account. The FBAR asks for your name and taxpayer identification number, and the IRS is the agency that enforces FBAR compliance, so consistency matters even though the form does not pass through the same e-file name-control check as a tax return.

Our practice is to use the same name on the FBARs as on the returns in the same package, so that when the streamlined submission is reviewed, the Form 1040s, the FBARs and the certification all describe one person. Where accounts at a UK bank are held in a slightly different form of the name, the FBAR should still show your name as the filer, with the financial institution's details and account numbers identifying each account.

Remember that the IRS has withdrawn its Delinquent FBAR Submission Procedures page. Late FBARs are filed through the BSA E-Filing System with an explanation for late filing, or as part of the Streamlined Filing Compliance Procedures. Do not rely on older articles that describe a separate delinquent FBAR route as currently available.

Accidental American names on UK bank FATCA forms and W-9s

Most Accidental Americans discover their status through their bank. Under the UK's FATCA arrangements, UK financial institutions collect self-certifications of tax residence and citizenship, and a US person may be asked for a US taxpayer identification number and sometimes a Form W-9. The name on these forms should be your correct legal name, and the SSN you provide should be the one that SSA links to that name.

Two issues come up repeatedly. First, a bank reports your account to HMRC, which passes information to the IRS under the intergovernmental agreement; if the bank holds your current name and the SSA record holds an old name, the data reported may be harder to match to your return. Second, if you give the bank a W-9 before your SSA record is updated, you are certifying the combination of name and number. Getting the SSA record right first means the W-9 you sign is internally consistent with every return you then file. The IRS form and instructions are at https://www.irs.gov/forms-pubs/about-form-w-9.

What about HMRC and my US passport name?

On the UK side, the name HMRC holds usually already reflects your current name, because you will have updated it through your employer, Self Assessment or your personal tax account after marriage or a deed poll. GOV.UK explains at https://www.gov.uk/tell-hmrc-change-of-details that you can tell HMRC your name has changed through its online service or the HMRC app, and that if you submit a Self Assessment tax return your details are updated once you have reported the change. HMRC does not match your UK records against SSA, but consistency across your UK and US files makes foreign tax credit evidence, such as SA302s and tax year overviews, easier to present.

Your US passport is issued by the Department of State, which has its own name-change process. The State Department's guidance at https://travel.state.gov/content/travel/en/passports/have-passport/change-correct.html explains that a name change within one year of passport issue uses Form DS-5504, and a change after that uses Form DS-82 if you are otherwise eligible to renew by mail, with an original or certified document such as a marriage certificate, divorce decree or court order. The Department of State and SSA do not update each other automatically. It is entirely possible to hold a US passport in your married name while SSA still holds your birth name, which is exactly why a current US passport alone does not solve the IRS match.

The passport is still useful. A US passport in your current name is strong evidence of both identity and US citizenship for the SSA application, and many of our clients update the passport and SSA record in sequence, using the same certified certificates for both.

Pre-filing name-consistency checklist

Before any Accidental American catch-up package is filed, we run through the following checklist. It takes very little time and it catches problems before the IRS does.

SSA: confirm the exact name SSA holds for your SSN, character by character, including hyphens, spaces and middle names. If you have an SSA card or letter, use that; if not, obtain confirmation through SSA.
IRS returns: the name on every Form 1040 in the package matches the SSA name, and a non-US spouse on a joint return or election is shown exactly as on their own identification number record.
US passport: note whether the name matches SSA. If it does not, decide whether to update the passport, SSA or both, and in what order.
FinCEN BSA E-Filing: every FBAR shows the same filer name and SSN as the tax returns in the package.
UK banks and brokers: FATCA self-certifications and any W-9 show the same legal name and SSN; update the bank if you corrected SSA after signing.
HMRC: your personal tax account and Self Assessment record show your current name, so UK tax evidence supporting foreign tax credits matches the name used on the US returns.
Evidence file: keep certified copies or clear scans of every marriage certificate, deed poll or court order linking each name, plus SSA's confirmation of the update.

Common mistakes that delay Accidental American filings

From the catch-up files we see, the avoidable delays follow a pattern. The most frequent is filing under the name on a UK passport without checking SSA. Next is assuming that updating the US passport also updates SSA; it does not. Third is sending photocopies or notarised copies to SSA, which it will not accept, and losing weeks as a result. Fourth is using one form of a double-barrelled surname on the returns and another on the FBARs. And finally, clients sometimes correct SSA but forget to update the bank that holds their W-9, so the next year's information reporting reintroduces the old name.

None of these is difficult to fix in isolation. The cost is time, and for anyone who wants to regularise their US position quickly, time is what a name mismatch takes away.

How we handle name mismatches in Accidental American catch-up filings

Our work for UK-based US citizens is tax preparation and compliance: preparing the delinquent returns, the FBARs, the streamlined certification and the supporting foreign tax credit and foreign earned income calculations. Identity alignment is part of that preparation. At the outset of every Accidental American engagement we confirm the SSA name, compare it with the passport, bank and HMRC records, and build the SSA update into the timetable so that it does not become the last-minute obstacle. If you have also never held an SSN, or cannot yet access an IRS Online Account from the UK, those are handled as separate workstreams.