French Tax Helpline (Allo Impots) 2026: Number, Scope, Limits and When to Use an Accountant

Updated 15 May 2026.

Allo Impots — officially called "Impots Service" by France's tax authority, the Direction générale des Finances publiques (DGFiP) — is the free telephone helpline for individual taxpayers with questions on income tax, withholding tax (prélèvement à la source, PAS) and local taxes. In 2026, as tax obligations multiply and grow more complex, it is worth knowing exactly what this service covers, what it cannot handle and when a taxpayer, business owner or sole trader needs to go beyond this first level of information.

In brief: Allo Impots (0809 401 401) answers straightforward questions from individual taxpayers on income tax, withholding tax and local taxes. Oral answers are not binding on the administration. As soon as your file involves a professional activity, a disposal, complex assets or international mobility, a chartered accountant or a formal tax ruling (rescrit fiscal) is required.

Allo Impots is the DGFiP telephone helpline for individual taxpayers, reachable on 0809 401 401 — a free non-premium number from a landline in mainland France (mobile operator charges may apply). It is part of the general contact system described on impots.gouv.fr.

The service is designed as a first-level response channel: a public finance agent answers in real time questions from taxpayers who cannot find the information on the online portal or who prefer an oral explanation.

2026 opening hours: Monday to Friday, 8:30 a.m. to 7:00 p.m., excluding public holidays. During the income-tax filing campaign (typically April to mid-June 2026), the DGFiP may extend the service to Saturday mornings — to be confirmed on impots.gouv.fr each season, as this extension is not guaranteed every year.

Income tax return (form 2042 and annexes)#

The agent can help you understand the 2042 boxes, pre-filled income, annexes (2042 C, 2042 C PRO), deductible alimony, standard deductible expenses and recurring tax credits or reductions: home services, donations, childcare costs, PER retirement savings premiums, MaPrimeRénov' energy grants.

Income tax calculation and withholding tax (PAS)#

Allo Impots explains the income-tax calculation, the quotient familial (household factor), the marginal tax rate, imputation of tax credits, and adjustments to the withholding tax rate (PAS): personalised rate, individualised rate between spouses, neutral rate and provisional advance payments for BIC, BNC or property income.

Payment and deadlines#

The agent answers questions on payment methods (monthly instalments, single payment, online payment), deadlines and the options to defer or adjust an advance payment through the personal area.

Tax notice#

If you have received your tax notice and do not understand a figure, a line or a code, Allo Impots explains the structure: taxable income reference, tax amount, social levies, miscellaneous contributions.

CSG, CRDS and PUMa (individual taxpayers)#

For individual taxpayers subject to the universal health protection contribution (PUMa) on capital income, or with questions on CSG/CRDS applied to rental income or capital gains, Allo Impots can provide orientation. Note: PUMa contributions for directors or self-employed individuals are processed by URSSAF, not the DGFiP.

Local taxes#

Allo Impots handles questions on taxe foncière (property owners) and taxe d'habitation on secondary residences (the taxe d'habitation on primary residences has been abolished). The agent explains the calculation, local allowances, exemptions and payment deadlines.

Allo Impots is an oral, real-time service that leaves no official written record on the administration's side. The agent's answer is not noted in your tax file.

The personal area on impots.gouv.fr is the official digital channel to file, pay, check your situation and send a secure message to your Public Finance Centre (CFP), with the exchange archived and the option to attach supporting documents. Messages are typically processed within 5 to 15 working days.

Secure messaging is preferable to Allo Impots whenever you want a written record of the administration's answer — useful in case of a subsequent claim or to justify a filing choice.

Professional situations (BIC, BNC, BA)#

If you run a professional activity subject to industrial and commercial profits (BIC), non-commercial profits (BNC) or agricultural profits (BA), your questions on the tax return, VAT, the tax regime, form 2031 (BIC) or 2035 (BNC) fall under the Service des Impots des Entreprises (SIE) of your professional address, not Allo Impots.

Corporate matters#

Incorporation, statutory amendments, dissolution, corporate income tax, business VAT, corporate tax return (form 2065): all these matters are for the competent SIE.

Patrimonial advice or tax planning#

Allo Impots offers no personalised advice on structuring a portfolio, choosing between the flat tax (PFU) and the progressive bracket for a specific taxpayer, the merits of a PER retirement plan or the trade-off between owner-occupation and rental investment.

Complex or international tax advice#

International mobility, tax treaties, transfer pricing and international taxation, dual residence, inpatriation or expatriation: these topics require expertise the telephone service cannot provide.

Ongoing tax audit and contentious proceedings#

The agent can orient you on the formal stages of an audit, but will not formulate any defence strategy. If you have received a rectification proposal (Article L55 LPF), immediately consult an accounting firm and, depending on the stakes, a tax lawyer. The 30-day deadline to respond (renewable once, Article L57 LPF) is tight.

Compliance review (Examen de conformité fiscale — ECF)#

The ECF, introduced by Article 16 of the 2022 Finance Act, is a contractual engagement between a taxpayer and an authorised provider. This topic is covered in our article on the compliance review 2026. It is entirely outside the Allo Impots scope.

Situation 1 — Employee, primary residence Paris, annual return. You have received your pre-filled return and do not understand why box 2BH (social levies already withheld) differs from the figure on your bank statement. Calling Allo Impots resolves the question in a few minutes.

Situation 2 — Adjusting withholding rate after a birth. You had a child in January 2026 and want your withholding rate to reflect this change. The agent explains the reporting process through the personal area.

Situation 3 — Disputed property tax. You received a property-tax notice with a rental value that seems abnormally high after renovation. The agent directs you to the claims procedure and applicable deadlines.

1. Sale of a company or shares#

Selling an SAS, SARL or business goodwill activates specific tax regimes: deferred taxation under Article 150-0 B, suspended taxation under 150-0 B ter, enhanced allowance for a retiring director (Article 150-0 D ter CGI). These mechanisms require upfront analysis and structuring — see our article on managing the post-disposal period.

2. Complex real estate disposal (dismemberment, SCI)#

A property held in dismembered form or through a corporate-taxed SCI follows capital-gains rules different from a direct full-ownership disposal. Basis calculations and allowances for the holding period vary by situation. An error in form 2048-IMM can trigger a reassessment several years later.

3. International mobility#

Tax residence determination, the applicable tax treaty, foreign-source income and the imputation of foreign taxes (Article 4 B CGI, bilateral conventions) far exceed the Allo Impots scope and require coordination between a chartered accountant and, often, a tax lawyer.

4. Director remuneration trade-off#

The dividends vs salary trade-off for a director of an SAS or SARL integrates fiscal parameters (income tax, corporate tax, PFU, 40% allowance) and social parameters that must be computed to the euro. Our article on dividends vs salary sets out the decision criteria.

5. Tax audit or company formation#

For an audit, the preparation of a binding file determines the outcome. For a start-up, the choice of legal form, tax regime and VAT regime has consequences spanning 5 to 10 years. Neither topic can be handled by Allo Impots.

When you need a binding position from the administration rather than general information, the tax ruling (rescrit fiscal) is the right procedure. Governed by Article L80 B of the Tax Procedures Code (Livre des procédures fiscales), it allows you to send a written request to your CFP (or the relevant national directorate) for a formal answer on the application of a tax provision to your situation.

The administration has a set period to reply (timeline varies by ruling type — to be verified on official documentation). Absent a response within that period, silence constitutes in principle agreement. The ruling is binding: if the administration reverses its position during a subsequent audit, it cannot impose penalties for the covered period, provided the facts disclosed were accurate and complete.

The tax ruling is to tax law what a written legal opinion is to business law: documented legal certainty, not counter information. Cabinet Hayot Expertise in Paris supports the drafting and filing of tax rulings for high-stakes patrimonial or business situations.

The Médiateur des ministères économiques et financiers (formerly Médiateur de Bercy) is a free, independent, non-judicial recourse. It intervenes when you have exhausted the internal DGFiP channels — contentious claim, hierarchical review — without a satisfactory outcome.

The referral is open to individual taxpayers and businesses alike. It often delivers a resolution within 2 to 4 months at no procedural cost.

Relevant situations for mediation:

• processing error on a claim by the CFP;
• persistent disagreement on the tax calculation after a reassessment;
• dispute over property-tax value after a rejected claim.

For a significant tax reassessment or a dispute involving a legal qualification, contentious proceedings before the administrative court or the involvement of a tax lawyer remain the appropriate routes.

Allo Impots is an effective first-level service for standard situations. Our observation from director, business founder and independent professional files in Paris: the service is regularly called on for questions that fall outside its scope, resulting in generic answers or, sometimes, contradictory responses depending on the agent reached. Agents respond to the best of their knowledge of the general rules, but they do not have access to your full file and cannot account for interactions between multiple tax regimes.

The underestimated risk: a verbal piece of information from Allo Impots, however well-intentioned, can lead to a filing choice that is later challenged at audit. Because it is not binding (Article L80 A LPF), you alone bear the risk of a requalification.

Our practical recommendation: use Allo Impots for procedural questions (deadlines, forms, payment methods) and secure messaging for questions that warrant a written response. For any situation involving tax choices with financial stakes — remuneration trade-off, disposal, rental property, international mobility — a consultation with our accounting firm in Paris 8 allows you to secure the approach and produce documented analysis, available for reference in any subsequent audit.

Profile: private-sector employee, single, one employer, fully pre-filled return, energy-renovation works eligible for a tax credit.

Appropriate channel: Allo Impots or secure messaging to verify the correct box for the tax credit, document retention requirements and the interaction with MaPrimeRénov' grant received in the same year.

Verdict: Allo Impots is more than sufficient. Engaging a chartered accountant would not be cost-effective.

Profile: founding director who sold his SAS for 2 million euros in 2025, tax resident in Italy since March 2025, having received management fees and dividends in France before the disposal.

Key tax issues:

• Determination of tax residence at 1 January 2025 vs departure date (Article 4 B CGI + France-Italy tax convention).
• Possible application of deferred-taxation regime 150-0 B ter or enhanced retiring-director allowance.
• Treatment of dividends received before departure: France or Italy taxation under the convention.
• Forms 2074 and potentially 2048 M (gains in deferred taxation).

Verdict: Allo Impots cannot address any of these points. A chartered accountant (Cabinet Hayot Expertise, Paris) coordinated with a Franco-Italian tax lawyer is essential. File preparation typically represents 6 to 15 hours of work depending on the complexity of the flows.

• Have your tax identification number (numéro fiscal / SPI) to hand before calling.
• Log in to your personal area on impots.gouv.fr to check whether the answer is already available.
• Identify the exact box or form involved (2042, 2042 C, 2044, 2031, 2035...).
• For a question with financial stakes: prepare a summary of the situation before any call or consultation.
• If a written record matters: use secure messaging rather than the telephone.
• For a tax ruling: allow time for the administration's response (timeline varies by ruling type) and draft a complete, accurate factual statement.

Written by Samuel Hayot, chartered accountant (expert-comptable), Cabinet Hayot Expertise, Paris. Updated 15 May 2026. Saturday opening hours during the filing campaign are announced by the DGFiP year by year — to be confirmed on impots.gouv.fr. This article is for information purposes only; it does not replace an accounting engagement, a personalised tax consultation or a review of your individual situation and documents.