Moving from the UK to France: the complete financial checklist

Start with four clocks, not one moving date

Visa status, civil residence, tax residence and social-security coverage answer different questions. A long-stay visa gives you a route to live in France. It does not decide where investment income is taxed. A French tax number lets you file. It does not prove the UK has stopped treating you as resident. An employment contract can trigger French payroll and healthcare before your first French tax return is due.

A British citizen who wants to stay for more than 90 days generally needs a French long-stay visa unless EU, family or Withdrawal Agreement rights apply. The route must match the activity. An employee may need work permission. An entrepreneur needs a viable professional route. A visitor visa requires resources, accommodation, medical cover and an undertaking not to work. A second home does not create a general right to reside.

Many long-stay visas must be validated after arrival and may later be replaced by a residence permit. Put the exact visa conditions and validation date into the same calendar as payroll, healthcare and tax milestones. A permission problem can become a financial problem very quickly if a bank, employer, insurer or prefecture asks for evidence you cannot produce.

Build the evidence file before the removals van

The most valuable relocation folder is a dated record of what changed and when. Build it while the facts are fresh, because the French arrival-year return may be filed many months after the move and the UK return uses a different year.

• Passport, visa, validation confirmation and every immigration decision or appointment record.
• French lease or purchase deed, utility start dates and evidence showing when the home became available.
• UK sale, tenancy or letting records, plus evidence showing whether the UK home remained available to you.
• A travel diary recording every midnight and workday in both countries.
• Employment contract, assignment letter, remote-work approval, payroll records and any A1 or coverage certificate.
• Statements, acquisition dates and contract notes for every bank account, ISA, taxable account, pension, company interest, crypto account and property.
• Sterling and euro values at every relevant transaction date, with the exchange-rate source retained.
• Marriage or civil-status documents, wills, pension nominations and evidence about dependants and the tax household.

Do not rely on an annual broker summary. A French return may need gross dividends, foreign tax withheld, acquisition cost and disposal proceeds in euros for each transaction. An ISA provider may never have needed to calculate those numbers. Download the raw history before your address change restricts online access or trading.

French tax residence is not a 183-day game

The popular rule that fewer than 183 days means non-resident is an unsafe shortcut. France looks at several domestic criteria. Your tax home can be in France if your household or foyer is there. If there is no clear household, France can look to your principal place of abode. Residence can also arise through your main professional activity or the centre of your economic interests.

The tests are factual and can be applied separately to members of a household. A couple can therefore create a complicated position when one partner and the children move first and the other keeps working and living between countries. Immigration status and a residence card are evidence, but neither replaces the tax test.

If the UK also treats you as resident under its Statutory Residence Test, move to the treaty. Do not stop at whichever domestic rule gives the answer you prefer.

France usually splits the arrival year at the arrival date

France's ordinary arrival-year position is an important contrast with Spain. A person who becomes resident part way through the calendar year generally declares relevant French-source income for the non-resident period and worldwide income from the date French residence begins. France does not automatically pull the whole pre-arrival calendar year into resident taxation.

That does not make timing simple. The UK tax year ends on 5 April, France uses the calendar year and UK split-year treatment only applies if a statutory case is met. A person arriving in France on 1 September may have a French pre-arrival period, a French resident period and two separate UK tax years touching the same French calendar year.

Write the proposed residence date at the top of the file and list the evidence supporting it. Then create a transaction timeline around that date. A disposal on 31 August and one on 2 September can fall into different French periods, while the UK answer depends on its own residence and capital-gains rules.

Use the UK-France treaty income by income

A double-tax treaty is not a general promise that you pay only the cheaper country's rate. First each country applies its domestic law. If both claim residence, the treaty examines permanent home, centre of vital interests, habitual abode and nationality, followed by agreement between the authorities where needed. Then each category of income or gain has its own allocation and relief method.

France often eliminates double tax with a tax credit calculated under treaty rules. The credit is not always the amount of foreign tax actually paid, and it cannot be inferred from a bank statement. Property income, government pensions, dividends and employment can use different mechanisms. Preserve UK tax certificates and do not net foreign tax off the income before the French classification is understood.

French income tax uses a household and marginal bands

France taxes through a foyer fiscal, or tax household, and uses the quotient familial. Broadly, net taxable household income is divided by the household's number of parts, the progressive bands are applied, and the result is multiplied back. Caps, allowances, credits and special rules then alter the final bill.

For the 2026 assessment of 2025 income, the official bands per part are 0% to €11,600, 11% from €11,601 to €29,579, 30% from €29,580 to €84,577, 41% from €84,578 to €181,917 and 45% above €181,917. These are marginal bands. Reaching the 30% band does not apply 30% to every euro.

French employment income normally enters prélèvement à la source, the withholding system, through payroll. Some foreign income and self-employed income can instead produce instalments collected by the tax authority. The final return reconciles the position. Since September 2025, married and PACS couples generally receive individualised withholding rates by default, but this changes only the collection between partners, not the household's total income-tax calculation.

Your first withholding rate may be generic or based on estimates because France has no prior return for you. Update income and household information through the tax account where appropriate, but keep a cash reserve. A low first-year deduction is not evidence of a low final liability.

The impatriate regime can change the pre-move calculation

France's impatriate regime is powerful but narrower than the word newcomer suggests. It is aimed at qualifying employees and certain directors recruited from abroad or transferred within a group. You generally need to have been non-French resident during the five calendar years before taking up the French role, and you must move French tax residence in connection with the job.

• A qualifying impatriation premium can be exempt from French income tax, subject to the reference-remuneration rules.
• An eligible person can sometimes use a 30% deemed premium instead of a separately stated actual amount.
• Qualifying workdays outside France performed in the employer's interest can receive relief, with statutory limits on the combined benefits.
• Fifty per cent of qualifying foreign investment income and specified foreign securities gains can be exempt from income tax, while social levies can still apply on the unreduced base.
• The regime can run until 31 December of the eighth calendar year following the year the French role begins, provided the annual conditions continue to be met.

The regime does not apply simply because you negotiated a job after deciding to move. The recruitment, residence and employment facts matter. The employment exemption also requires enough remuneration to remain taxable compared with suitable French reference pay. Contract wording and employer records should be designed before the role begins, not reconstructed at the first audit.

A separate five-year IFI rule can benefit a new French resident even when the employment impatriate regime does not. That distinction matters for retirees, entrepreneurs and people moving for family reasons.

Your ISA remains British and becomes French-taxable

The UK lets a non-resident keep an existing ISA and preserves the UK tax relief. You normally cannot add new money after becoming non-UK resident, apart from narrow Crown-service exceptions, and you must tell the provider. France does not recognise the ISA as a domestic tax wrapper. Interest, dividends and realised gains inside it can therefore enter the French return from the date French residence begins.

This creates a reporting problem before it creates a tax bill. The ISA statement may not identify the euro cost of every purchase, equalisation on funds, gross foreign dividends, withholding tax or the legal classification of an accumulating ETF. A sale can be invisible to HMRC and still be a French taxable disposal.

Audit the ISA before you liquidate it. A wrapper mismatch is a reason for analysis, not an instruction to sell everything.

Most ordinary portfolio income now faces a 31.4% French flat tax

France's prélèvement forfaitaire unique, or PFU, is often called the flat tax. Many older explanations say 30%. From 1 January 2026, most ordinary investment income and securities gains are typically taxed at 31.4%, made up of 12.8% income tax and 18.6% social levies. The increase came through a higher CSG rate.

You can instead make a global election for the progressive income-tax scale for relevant investment income and gains. Global is the operative word. The election is not normally a pick-and-mix choice for one profitable fund while leaving the rest at PFU. Household income, deductible CSG, historic share-acquisition reliefs and foreign tax credits can affect which route is better.

Do not apply 31.4% blindly to every product. Certain assurance-vie products retain 17.2% social levies, pension receipts use pension rules and an S1 or other compulsory health-system affiliation can affect some social charges in specific contexts. Classification comes first.

Build the French wrapper strategy after residence is clear

France has its own useful wrappers. A PEA can hold eligible European shares and qualifying funds. Gains reinvested inside the plan are not taxed as they arise. After five years, withdrawals are generally exempt from income tax, although social levies remain. A new PEA can generally be opened only by an adult who is French tax resident, and contribution and eligibility rules limit what can be held.

Assurance-vie is an investment and estate-planning contract, not merely life insurance in the UK sense. Tax depends on the contract age, premium dates, withdrawals and beneficiary designations. A PER is a French retirement wrapper with contribution relief and access rules. None should be chosen from the wrapper name alone.

• Start with the goal, time horizon and required access to cash.
• Compare eligible investments, all product and advice fees, tax on withdrawals and estate treatment.
• Check whether a wrapper changes only the tax timing or also the investment risk and liquidity.
• Keep enough simple cash outside long-term wrappers for relocation costs, tax and property surprises.
• Model the cost of selling appreciated UK holdings to fund the new wrapper rather than counting only the future benefit.

A sensible structure may keep an ISA for a future UK return, use a PEA for qualifying long-term equity exposure and hold other assets in an ordinary French account. The right answer depends on unrealised gains, provider access, future country plans and whether the impatriate regime applies.

Every foreign account needs a reporting decision

French residents generally report foreign bank and payment accounts, foreign digital-asset accounts and foreign capitalisation or similar investment contracts, including foreign life insurance. The 3916 and 3916-bis information is submitted with the annual income-tax return. The rule can cover accounts opened, held, used or closed during the year, not only accounts with taxable income.

The reporting perimeter is broad. It can include UK current and savings accounts, cash held with an overseas broker, foreign brokerage relationships that receive or hold cash or securities, foreign insurance contracts and accounts with overseas crypto custodians. An authority to operate another person's account can also matter.

A narrow exception can apply to certain foreign online payment accounts used only for online purchases or sales, linked to a French account and kept below €10,000 of annual receipts across the relevant accounts. Treat that as a specific exception, not a general small-balance threshold.

Failure to file can produce a €1,500 fine per undeclared account, increased for accounts in jurisdictions without the required information-exchange arrangement, plus wider tax consequences. The practical solution is an account register with institution, country, account number, opening and closing dates, owners, mandates, contract type and the relevant form section.

IFI taxes property wealth, not the whole portfolio

France's Impôt sur la fortune immobilière, or IFI, applies when the household's net taxable real-estate wealth exceeds €1.3 million at 1 January. It reaches direct property and certain shares or funds to the extent their value represents property, subject to exemptions, valuation rules and limits on deductible debt. Cash, ordinary shares and a plain securities portfolio are not pulled in merely because the household is wealthy.

A new French resident who was not French tax resident in the previous five calendar years is generally assessed only on French real estate until 31 December of the fifth year following the year residence is established. This foreign-property exclusion does not require qualifying employment. After the period ends, worldwide taxable real estate can enter the calculation.

Take advice before repaying a mortgage, gifting a property, moving a property into a company or buying through a holding structure. A change that looks efficient for income tax can worsen IFI, succession, financing or capital-gains treatment.

UK pensions can stay put, but withdrawals need French planning

A UK workplace pension or SIPP does not need to move because its owner does. Keeping it can preserve familiar regulation, fund choice and consumer protections. The provider may restrict new contributions, drawdown or investment changes for French residents, so obtain its policy in writing before leaving.

Under the treaty, a private-sector pension paid to a French resident is generally taxable only in France. Use the official France-Individual process where appropriate to request UK relief at source or repayment. A government-service pension is generally reserved to the UK, subject to the treaty's nationality exception. Confirm the legal scheme category rather than guessing from the employer's name.

Regular pension payments generally enter French pension taxation and may benefit from the household pension allowance under current rules. A genuine retirement capital payment can sometimes qualify, on an express and irrevocable election, for 7.5% income tax after a 10% allowance if it is paid in one instalment and the build-up contributions met the deductibility conditions. Foreign plans can qualify, but the legal conditions and social charges must be tested.

The UK's 25% pension commencement lump-sum label is not a French exemption. Ask what France taxes before asking the UK provider to pay it.

Do not transfer to a QROPS simply because a cross-border adviser markets one. Compare regulation, protection, investment menu, currency, fees, succession and the UK's overseas transfer charge. The tax residence of the member and location of the receiving scheme can alter the charge, including after the transfer.

The State Pension, S1 and healthcare must be planned together

The UK State Pension can be paid in France and normally receives annual increases because France is in the EEA. Claim through the International Pension Centre and compare payment routes by total exchange-rate spread, not only the advertised transfer fee.

A French resident receiving a UK State Pension or another qualifying exportable benefit may be eligible for UK-funded healthcare through an S1. The S1 must be registered with the local CPAM. It gives access on the same basis as a French insured person, which still involves co-payments. Many households buy a mutuelle to cover some or all of those remaining costs.

The carte Vitale can take months. Keep the attestation de droits and temporary social-security number, request a feuille de soins when needed and retain receipts. A GHIC is useful for eligible temporary travel; it is not a substitute for resident healthcare or comprehensive insurance.

Social-security affiliation can also affect the French social levies applied to some investment or property income. An S1 holder should obtain advice on the specific charge and filing mechanism rather than assuming a complete exemption from CSG and CRDS.

Keeping the UK home means running a cross-border business

UK rent remains taxable in the UK. The Non-resident Landlord Scheme applies operationally when a landlord's usual place of abode is outside the UK, commonly when living abroad for six months or more. The agent or tenant can withhold basic-rate tax unless HMRC approves gross payment. Receiving rent gross changes collection, not the final UK liability or return obligation.

France also taxes the worldwide property income of its resident, with treaty relief for eligible UK tax. The profit can differ between countries because deductible expenses, finance costs, depreciation, personal allowances and exchange rates differ. Translate income and expenses through an accepted, consistently documented method rather than copying the sterling UK profit into a euro box.

• Obtain consent to let, suitable landlord insurance and evidence of every safety and licensing obligation.
• Model management, maintenance, service charges, voids, finance, compliance and both countries' tax.
• Keep a sterling reserve for repairs and UK tax instead of converting every rent payment automatically.
• Check how an available UK home affects the UK Statutory Residence Test and return plans.
• Appoint someone who can make decisions during an emergency, not only collect rent.

Selling is also a two-country event. A non-resident disposal of UK property normally has to be reported to HMRC within 60 days of completion, even when no tax is due. France can calculate its own gain in euros. A flat sterling price can still create a French gain if the exchange rate changed between purchase and sale.

Sell or rent by comparing two complete futures

The UK home may be valuable insurance against returning. It may also be a leveraged, remotely managed single asset in a currency you no longer spend. Compare the after-tax paths rather than asking whether property generally goes up.

Use conservative assumptions for rent, voids and repairs. Stress a major building bill, higher mortgage rate, bad tenant and a year in which sterling moves against you. Then stress the sale path with a market fall, investment loss and an earlier-than-planned return to Britain. The best plan is the one whose bad version remains survivable.

Rent before buying unless the facts are unusually settled

Buying a French home can make the move feel real, which is precisely why it should not be rushed. Renting first lets you test work, schools, transport, healthcare, climate, noise and the local market while the tax and visa systems settle.

The buyer normally pays acquisition costs. Notaires de France estimates roughly 7% to 8% of the price for an older property and 2% to 3% for qualifying new property. Much of this is tax and disbursement rather than the notaire's own remuneration. Add survey or technical review, mortgage guarantee, broker, insurance, renovation, co-ownership charges and a realistic maintenance reserve.

Use the notaire for the conveyance and legal framework, but remember that a single transaction can need separate mortgage, tax, building and succession advice. Buying through an SCI or another company is not a universal tax solution.

Banking and foreign exchange deserve a written policy

A French current account simplifies rent, utilities, tax refunds, healthcare reimbursements and a future mortgage application. Keep at least one suitable UK account if the provider permits French residents and you have sterling obligations, but disclose the real address and tax residence. Banks exchange information under international reporting rules.

• Open the French account early enough to provide a RIB for employers, landlords and authorities.
• Ask UK banks and investment providers in writing whether they serve French residents and what activity they restrict.
• Keep a list of every standing order and Direct Debit before switching or closing anything.
• Use strong authentication that still works with a French mobile number.
• Compare the full FX spread, fixed fee, recipient-bank charge and transfer time.
• Match near-term euro liabilities with euros and known UK liabilities with sterling.

Do not make one heroic exchange-rate bet with the house deposit or first-year tax reserve. If the timing is flexible, staged conversion can reduce the risk of one bad day. This does not guarantee a better average rate; it removes the single-date gamble. A forward contract can fix a rate but creates an obligation, counterparty exposure and cash-flow terms that must be understood.

French credit files do not simply import a UK credit score. Lenders will care about provable income, contract status, bank behaviour, deposit, debt and documents. Preserve payslips, P60s, tax returns, bank statements and credit agreements so the absence of a local history does not become an absence of evidence.

Work, companies and student loans can stay connected to Britain

Remote work from a French kitchen is work performed in France. A UK employer may face French payroll, employment-law, social-security and corporate-presence questions. An A1 or other coverage certificate can preserve UK National Insurance for a qualifying temporary posting or multi-country pattern, but the employer's label does not create eligibility.

A director or owner-manager must examine where the company is effectively managed, where contracts are negotiated, whether France can assert a permanent establishment and how salary, dividends and expenses are treated. Moving the person while pretending the company stayed untouched is one of the fastest ways to create an expensive two-country dispute.

If you have a UK student loan, tell the Student Loans Company when you expect to be abroad for more than three months. Overseas repayments are assessed using country-specific thresholds and evidence. Ignoring requests can lead to fixed repayments and arrears; leaving the UK does not cancel the loan.

Wills and inheritance need a cross-border review

Succession law decides who inherits. Succession tax decides what tax is due. They are related, but they are not the same. Under the EU Succession Regulation used in France, the default law is generally that of the deceased's last habitual residence for the succession as a whole. A person can generally choose the law of a nationality in a valid will, including the law of a non-EU country such as the UK.

That choice of law does not elect a tax system and does not automatically remove every French forced-heirship issue. French law protects children where it applies, and France introduced a compensatory mechanism for certain estates governed by foreign law. The UK and France also have a separate estate-tax convention that allocates taxing rights and relief.

From 6 April 2025, UK Inheritance Tax moved to long-term UK residence rather than the old domicile framework for new events. Someone who was UK resident for at least 10 of the previous 20 tax years can remain within UK IHT on overseas assets for a tail of between three and ten years after leaving, depending on residence history and transitional rules.

• Review UK and French wills together so one does not revoke or contradict the other.
• Check beneficiary designations on pensions and assurance-vie contracts separately from the wills.
• Document marriage, PACS or civil-partnership status and the matrimonial property regime.
• Map the location and ownership of property, accounts, companies, trusts and insurance.
• Ask a notaire and UK adviser to coordinate the succession law, French tax and UK IHT tail.

Use a twelve-month relocation cash plan

Relocations fail financially when every cost is treated as a one-off surprise. Build a twelve-month cash plan with three reserves.

Do not invest the deposit, first French tax payment or money needed during a probation period. The expected return is not compensation for having to sell during a market fall. If one partner's income will stop, model that explicitly rather than treating the household as temporarily unlucky each month.

Follow the move in phases

Six to twelve months before

• Choose the immigration route and obtain advice on French and UK residence before fixing transaction dates.
• Audit ISAs, taxable accounts, pensions, company interests, property, trusts and foreign accounts.
• Ask employers, pension providers, banks and brokers whether they can serve a French resident.
• Model keep-or-sell decisions for the UK home and large appreciated investments.
• Review wills, marriage arrangements, pension nominations and the UK IHT tail.
• Create the cash and currency plan without relying on a favourable future exchange rate.

The final month in the UK

• Download transaction histories, tax certificates, payslips, P60s, pension documents and property records.
• Record UK housing, work and travel facts supporting the departure and any split-year case.
• Tell HMRC through the correct P85 or Self Assessment route.
• Update the Student Loans Company if the absence will exceed three months.
• Move enough euros for the first months and retain sterling for known UK liabilities.
• Create one calendar for visa, tax, provider, property and healthcare deadlines.

The first three months in France

• Validate the long-stay visa where required and begin the correct residence-permit process.
• Open the French bank account and obtain a RIB.
• Complete employer, social-security, S1 or PUMa steps and maintain bridge medical cover.
• Set up access to the French tax service and record the intended residence date.
• Start transaction-level euro records for every UK account and investment.
• Recheck the plan if work, family, housing or travel differs from the original assumptions.

After 31 December

• Prepare worldwide post-arrival income and gains in euros, plus any pre-arrival French-source amounts.
• Complete the first 2042 and 2047, and 2042-NR where the facts require it.
• File the 3916 or 3916-bis information for every relevant foreign account and contract.
• Test the household's 1 January real-estate wealth for IFI, including the new-resident rule.
• Obtain UK tax certificates and calculate treaty credits by income category.
• Complete the UK return and any property reports on their own deadlines.

Four examples show where the expensive assumption hides

Example 1: the October arrival and an ISA disposal

Assumptions: Maya becomes French resident on 1 October and sells an ETF inside her ISA on 15 October for a £24,000 gain. She qualifies for UK split-year treatment.

The ISA can keep the disposal outside UK Capital Gains Tax. France can still tax the post-arrival gain under its own euro calculation because the ISA is not a French wrapper. Maya needs original acquisition records even though HMRC never asked for them.

Example 2: the recruit with a UK portfolio

Assumptions: Daniel is recruited in London for a Paris role, has not been French resident in the previous five years and owns £800,000 of UK shares and funds.

The impatriate regime needs analysis before the contract is final. A qualifying premium and partial exemption for specified foreign investment income may be valuable, but the employer must support the reference remuneration and documentation. Daniel should not transfer everything to a French custodian before confirming how foreign-source status is determined.

Example 3: the retiree offered a 25% lump sum

Assumptions: Helen is French resident and her SIPP offers a £100,000 pension commencement lump sum described as tax-free.

The UK label does not decide France's treatment. Helen must establish whether the payment qualifies as a genuine non-fractioned retirement capital payment, whether the contribution conditions are met, whether the 7.5% election is useful and what social charges apply. Taking the cash before getting that answer removes every timing option.

Example 4: the UK flat with no sterling gain

Assumptions: Sam bought a flat for £320,000, later becomes French resident and sells it for £320,000 after sterling strengthens.

The sterling price suggests no gain before costs. France converts purchase and sale at their relevant dates, so a euro gain can exist. Sam also needs the UK non-resident property report within 60 days and must coordinate any UK tax with the French treaty credit.

Know when routine help is not enough

A routine filing service can be excellent for straightforward French returns. It is not a substitute for coordinated advice when the job is to interpret residence, a treaty, a foreign pension or a company managed across two countries.

• France and the UK may both claim residence, or the family moved on different dates.
• You may qualify for the impatriate regime or the five-year IFI foreign-property rule.
• You plan an ISA disposal, pension capital payment, QROPS transfer, company transaction, gift or property sale around the move.
• You have trusts, carried interest, private-company shares, crypto activity or complex accumulating funds.
• You will keep, let or sell a UK home while French resident.
• You work remotely for a UK employer or direct a UK company from France.
• You are an S1 holder and need the social-levy treatment of investment or property income confirmed.
• The estate can be taxed or administered in both countries.

Ask for one dated plan that states the residence assumptions, treatment of each major income source and asset, required forms, transaction timing, treaty-relief route and documents to keep. Separate UK and French summaries leave the most valuable question unanswered: how the two systems interact.

The bottom line

A UK-to-France move is manageable when the order is right. Establish the legal right to live and work, French residence, UK residence and social-security system. Split the arrival year. Translate every account, wrapper and income source into French tax and reporting. Then decide what to keep, sell, transfer or withdraw.

Remember the four traps. France does not use a simple 183-day safe harbour. An ISA is not a French tax shelter. Most ordinary investment income now faces a typical 31.4% flat tax in 2026. Foreign accounts can require reporting even when they hold little cash or create no tax.

The goal is not to remove every British connection. It is to keep only the connections that remain useful after French tax, reporting, currency, cost and complexity are counted.