mai 25, 2026

How to declare the sale of real estate to the tax authorities?

découvrez comment réaliser votre déclaration de taxes lors de la vente de votre propriété. nos conseils pratiques vous guideront à travers les démarches essentielles pour remplir votre déclaration en toute conformité avec la législation fiscale.

Selling real estate is an important step in a homeowner’s life, involving not only personal and financial aspects, but also specific tax obligations. When the time comes to sell your property, it is essential to understand how to file a tax return to comply with current legislation. This process involves taking into account any capital gains realized, applying specific rules related to the nature of the property sold, and meeting the deadlines set by the tax authorities. Beyond signing at the notary’s office, administrative formalities must be rigorously completed to avoid sanctions, including financial penalties.

Indeed, knowing how to correctly declare the sale of a property includes understanding the mechanisms for taxing capital gains on real estate, the exemptions applicable to primary residences, and the procedures to follow when reselling a second home or rental investment. This regulatory landscape, sometimes perceived as complex, requires careful preparation and detailed tracking of the necessary documents. Furthermore, notary fees and transfer taxes, often overlooked, play a crucial role in the final tax calculation. Practical reporting procedures have evolved, notably through the digitization of tax services, which offers sellers the possibility of using specific online forms, such as Form 2048-IMM, to report information on the real estate transaction. In 2025, new tools and guides are available to help owners comply with these tax requirements while optimizing the management of the sale.

This guide covers in detail all the tax issues related to declaring the sale of a property, clearly outlining each step, the required documents, and tips for reducing taxes within the legal framework. Buying or selling a property is a major opportunity that comes with a significant tax responsibility. Understanding these elements will allow you to navigate this phase with complete peace of mind and compliance.

Understanding the Tax Impact of Real Estate Sales: Key Concepts to Know

The sale of real estate goes beyond a simple financial transaction between two parties. It falls within a strict tax framework, where capital gains tax is a central concern. This concept refers to the positive difference between the sale price and the purchase price of a property. When realized, this capital gain may be subject to tax, which requires a precise declaration to the tax authorities.

In most cases, capital gains are taxable unless the property sold is your primary residence, which benefits from an exemption. This distinction is fundamental and determines how the sale must be declared. Second homes and rental properties, on the other hand, do not benefit from immediate exemption and must be subject to special attention when filing the declaration.

Calculating the capital gain on real estate

To determine the amount of the capital gain, the purchase price, adjusted for acquisition costs and any work carried out on the property, must be subtracted from the resale price. These factors reduce the taxable base. The calculation is summarized as follows:

Sale price of the real estate 🏠

  • – Initial purchase price of the property
  • – Acquisition costs (notary, transfer taxes) 👨‍⚖️
  • – Cost of work supported by invoices 🛠️
  • This method ensures that the tax only applies to the actual capital gain generated, without penalizing investments or improvements made by the owner.

Primary residence vs. secondary residence: distinct tax rules

The primary residence clearly stands out in real estate taxation. Its sale is generally exempt from capital gains tax, provided that the property was actually occupied as a habitual residence at the time of the transaction. Supporting documents that may accompany this declaration include energy bills, tax notices, or children’s school certificates.

However, secondary residences are subject to capital gains tax. However,

reductions based on length of ownership apply gradually: starting from the sixth year of ownership, an annual reduction is calculated, generally leading to a total exemption from income tax after 22 years and an exemption from social security contributions after 30 years of ownership. Property Type 🏘️ Capital Gains Exemption ❌/✔️

Deduction for Length of Ownership ⏳ Duration for Full Exemption 📅 Primary Residence ✔️
Not Applicable Immediate Secondary Residence
6% per year from the 6th to the 21st year, then 4% in the 22nd year 22 years (income tax), 30 years (social security contributions) To learn more about these aspects, it is recommended to consult official or specialized sources such as this analysis on the tax implications of real estate sales.

Discover all the necessary information on tax reporting related to the sale of real estate. Learn how to manage your tax obligations, optimize your declarations, and avoid common mistakes for a successful transaction. The Role of the Notary in the Tax Return of Real Estate SalesThe notary is a central player in real estate sales. Their involvement is not limited to preparing the deed of sale, but also extends to providing the data required for the tax return.

As a public official, the notary guarantees the legal validity of the transaction and registers the transfer with tax authorities such as the Directorate General of Public Finance (DGFiP). These automated procedures facilitate the traceability and transparency of the sale.

What are the costs associated with the notary’s involvement?

Notary fees, also known as transfer taxes, are mostly paid by the buyer but often impact negotiations during the sale. They include taxes and professional fees and vary according to several criteria:

Type of property (old or new) 🏚️🏗️

Transaction amount 💰

Geographic area 📍 For example, for an old property sold for €250,000, the fees can amount to around €18,000.Notary support for capital gains declaration

  • Calculating real estate capital gains requires a certain level of expertise. The notary has the necessary information to establish this amount, including acquisition costs and deductible work. Some notaries offer an additional declaration assistance service, generally billed between €300 and €500.
  • However, the seller’s ultimate responsibility remains to provide all relevant supporting documents (work invoices, purchase contracts, etc.) to ensure a compliant declaration. Fee Type 👛
  • Average for a property worth €250,000 💵

Payment Responsibility 👤

Transfer Taxes

€14,000 to €16,000

Buyer

Notary Fees €1,200 to €2,000 Buyer
Capital Gains Declaration Assistance €300 to €500 Seller (optional)
https://www.youtube.com/watch?v=25C-nKyQ4As Essential Administrative Procedures for Declaring a Real Estate Sale to the Tax Office Once the sale is complete, it is important to begin tax filings promptly. The capital gains declaration must be completed within the specified timeframe to avoid penalties.
The main form used for this declaration is Form No. 2048-IMM, which provides specific details about the transaction. This document includes: The sale price The purchase price
Acquisition costs

Details of work performed

This declaration must be filed within 30 days of the signing date of the deed. Adherence to the deadline is crucial to avoid penalties of up to 10% of the capital gain amount, in addition to late payment interest. Practical Declaration Procedures

The seller can file their declaration: Online in their secure personal space on the official tax websiteimpots.gouv.fr

  • By post, by sending the completed form if internet access is unavailable
  • Step 📋
  • Description
  • Deadline ⏰

Signing the deed of sale

Finalization of the transaction at the notary’s office

Day 0

Compliance with these formalities ensures that the seller is not exposed to unnecessary audits and penalties. Follow-up and tax audit after the declaration After filing, the tax authorities may conduct additional audits. It is therefore essential to keep all supporting documents related to the sale, including: invoices for work, notarized certificates, proof of residence, etc.
Optimize the tax situation of a property sale without risk Minimizing the tax burden on the sale of real estate is a common concern. Several legal levers can be used to influence the amount of taxable capital gains. Enhance acquisition costs
An effective strategy is to include purchase-related costs, such as notary fees or transfer taxes, in the purchase price. This increases the initial cost of the property and automatically reduces the taxable capital gain. For example, a property purchased for €200,000 with €15,000 in fees will be calculated at €215,000 for the tax authorities. Take work carried out into account Construction, improvement, or expansion work can be deducted from the capital gain, if each expense is supported by an invoice. Thus, energy-efficient renovations or the development of additional space reduce tax. Thermal insulation work

Kitchen or bathroom renovation

Home extension or expansion

Take advantage of capital gains tax deductions

The longer the property is owned, the greater the capital gains tax deduction. It is applied from the sixth year onwards, according to a scale:

6% per year between the 6th and 21st year

4% in the 22nd year

After 22 years, the capital gain is exempt from income tax. For social security contributions, the exemption extends up to 30 years. Year of ownership ⏳

Income tax allowance (%) 🌟

Social security contribution allowance (%) 🌟

  • 6 to 21
  • 6% per year
  • Progressive from 1.65% to 8.3%

22

4%

  • 9%
  • 23 to 30

Full exemption

Progressive up to full exemption For a detailed approach to optimizing tax when selling in 2025, this resource provides valuable insight.
The most common mistakes when declaring a property sale Despite the tools available, some errors persist and can lead to tax complications. By identifying common pitfalls, sellers can ensure a smooth process. Omitting essential supporting documents
Failing to keep or present invoices for work, documents proving the purchase or primary residence can lead to legitimate allowances or deductions not being taken into account. The lack of supporting evidence weakens the tax return. Ignoring recent tax developments Tax rules change frequently. Failure to stay informed of legislative changes, applicable rates, or new forms increases the risk of incorrect tax returns.
Missing deadlines Failure to comply with the 30-day deadline for submitting the tax return can result in severe penalties, including a 10% surcharge and late payment interest at the applicable legal rate. 📌 Carefully keep all documents relating to the sale 📌 Regularly consult legal tax updates

📌 File your tax return on time One last piece of advice: don’t hesitate to consult a tax expert or wealth management advisor to avoid mistakes and optimize your procedures. You’ll find more advice on how to properly prepare your tax return onthis website specializing in real estate taxation.

Discover everything you need to know about filing a tax return when selling a property. Optimize your procedures and maximize your tax benefits with our expert advice.

What impact does the sale have on the property tax for the current year?

Property tax remains a significant expense for any owner selling a property. This annual tax, also known as local taxes, applies to all owners as of January 1 of the tax year.

In the context of a real estate sale, the division of property tax between the seller and the buyer is generally negotiated during the preliminary sales agreement or deed of sale. However, legally, the seller is liable for the tax for the entire year, unless otherwise specified in the deed of sale.

Practical arrangements for managing property tax

To avoid any disputes, it is common for the seller and buyer to share the payment pro rata temporis based on the date of the sale. This practice, although extrajudicial, is generally accepted. ✅ Check the property tax collection date

✅ Refer to the deed of sale for specific clauses

  • ✅ Calculate the portion due for the period before the sale
  • ✅ Plan for an adjustment as part of the transaction
  • Liable 📅

Property tax due Sharing termsSeller (as of January 1st)

Full annual tax

Possible sharing with buyer by agreement

Buyer (after the sale)

No tax due for the current year

Possible partial refund to the seller

Anticipating this aspect properly facilitates the relationship between seller and buyer. To learn how to anticipate other tax implications related to rental management or investment, you can consult

  • this resource specialized in rental real estate
  • .
  • Impact and monitoring of the real estate sales declaration for investments abroad
  • Real estate sales made abroad, particularly in the United States, require special attention regarding taxation. As a seller, it is important to understand the specific rules that apply to goods held outside the national territory.
These transactions are subject to reporting requirements, which sometimes include different forms and country-specific procedures. In 2025, online tools will facilitate the tracking and reporting of foreign real estate investments. Declaration principles for real estate held outside France The French tax authorities require that any sales made abroad be declared on the income tax return, which can lead to double taxation. However, international tax treaties can mitigate this risk. Reporting on the consolidated income tax return via Form 2042
Additional forms depending on the country concerned Compliance with local and international reporting deadlines Country concerned 🌍
Tax specificities 🧾 Required documents 📄 United States

Specific reporting obligations and Franco-American tax treaties US notarial deeds, IRS declarationsOther countries

Varies according to bilateral agreements

Local tax statements, certificates of residence

To learn more about the steps involved in selling real estate across the Atlantic,

this comprehensive guide describes the process.

  • FAQ – Frequently asked questions about reporting real estate sales to the tax authorities
  • ❓ When must the sale of real estate be reported?
  • The declaration must be filed within 30 days of the signing of the authentic deed at the notary’s office. ❓ Is a primary residence always exempt from capital gains tax?
Yes, provided the property was occupied as a primary residence at the time of sale and the owner can provide proof of this. ❓ What documents are required to support the work? Detailed invoices from service providers, as well as contracts and purchase orders, are essential for the work to be included in the capital gains calculation.
❓ What to do if you fail to meet the tax return deadlines? Financial penalties may apply, including a 10% surcharge on the tax amount due, as well as late payment interest. ❓ How to declare the sale of real estate located abroad?
It is imperative to declare the capital gain on your French tax return, in compliance with bilateral tax treaties and providing the required documents depending on the country.