Property deficit and energy renovation: the 21,400 euro cap

Quick answer. When works move a let dwelling from class E, F or G to at least class D, the cap of property-deficit offset against overall income doubles, from 10,700 to 21,400 euros per year (Tax Code art. 156). The scheme was introduced by the amended finance law for 2022 (n° 2022-1499). Aids received, such as the energy renovation grant, reduce the cost actually borne: only the expense effectively left to you enters the calculation.

The doubling of the property deficit is one of the rare schemes that reward the renovation of energy sieves with a tax benefit. Well used, it erases up to 21,400 euros of taxable income per year instead of 10,700, just as the timetable banning the letting of the most energy-hungry assets tightens. But it follows precise conditions of energy class and timing, the treatment of aids is often misunderstood, and a holding obligation frames the benefit. Here is the full mechanism, with a comparison, a worked calculation and the pitfalls we keep seeing in landlords' files.

A property deficit arises when your deductible charges (works, interest, property tax, insurance, management fees) exceed your taxable rents. The classic property deficit then offsets overall income up to 10,700 euros per year. The energy scheme doubles this cap.

For eligible dwellings, the cap of property-deficit offset against overall income rises to 21,400 euros per year, up to the amount of the energy renovation works (Tax Code art. 156). Above this cap, the surplus is not lost: it remains carried forward against property income for the following ten years, as for an ordinary deficit. The share of deficit coming from loan interest never enters the offset against overall income: it can only be offset against property income, a point we detail in our article on the general property-deficit mechanism.

This doubling aims to speed up the exit of energy sieves from the rental stock, by offering a tax counterpart to the owner who renovates. It targets taxpayers assessed in the property-income category under the actual-cost regime, held directly or through an SCI at income tax.

The two regimes coexist. It is the nature of the works and the energy class jump that switch from the single cap to the doubled cap. The table below sets the two side by side.

The logic is the same on both sides: only the offset against overall income is capped, never the carry-forward against future property income. The energy scheme does not create a second counter; it raises the annual offset ceiling when the class jump is proven.

The doubling is only acquired if the works genuinely improve the dwelling's performance. It is not the nature of the works alone that counts, but the measured result.

The asset must move from class E, F or G before works to class A, B, C or D after works. This jump is proven by an energy performance certificate carried out before the works begin and a second after their completion. Without this double proof, the cap stays at 10,700 euros and the extra benefit is lost. The works must also correspond to expenses eligible for energy renovation, such as wall or roof insulation, an efficient heating system or controlled ventilation. The aim is to frame the works programme to clearly reach class D, rather than stopping halfway between two labels.

The scheme is not permanent: it was introduced by the amended finance law for 2022 (n° 2022-1499 of 1 December 2022) for a set window. The original text targets works expenses paid from 2023, and the justification of the energy performance level reached after the works is expected at the latest by 31 December 2027.

The exact payment window, and any later extension by a more recent finance law, must be confirmed against the text applicable to your payment year: this is a sensitive point to check case by case before committing the spend.

What must be kept in mind is that it is the payment date of the works that counts, not the invoice date or the completion date of the site. This detail has concrete consequences: a final balance settled outside the scheme's window may fall outside the raised cap. We therefore advise planning the schedule for settling invoices, and in particular the final payment, within the open period, and validating this timeline with your adviser before the first blow of the pickaxe.

The most misunderstood point is the treatment of renovation aids. A works expense is deductible up to the cost actually borne by the owner. When a grant directly reduces the cost of the works (energy renovation grant, energy-saving certificates), it is this remaining cost that, in practice, forms the deductible base. The precise treatment depends on the nature of the aid and how it is received: it is worth validating file by file.

Take a worked example, for illustration. A landlord commits 30,000 euros of energy works and receives 8,000 euros of aids reducing the cost. The cost actually borne is 22,000 euros. After offsetting the other charges against the rents, the deficit deductible from overall income is capped at 21,400 euros the same year, the balance of 600 euros remaining carried forward against property income. For a taxpayer whose marginal band is 30%, the income-tax saving is computed on the deficit actually offset against overall income, namely 21,400 euros: 21,400 x 30%, which represents about 6,400 euros in the first year. To this is added the effect of social levies: the erased property income no longer bears the 17.2% of social levies, which strengthens the net gain.

The doubling of the property deficit is a genuinely advantageous scheme for a landlord renovating an energy sieve, provided three points are respected: the class jump proven by EPC, payment within the scheme's window, and taking into account the aids that reduce the deductible cost.

We stress a fourth condition, less visible yet central: the offset against overall income requires keeping the asset let until 31 December of the third year following the one of the offset. Selling or stopping the letting too early calls the benefit into question, with a tax claw-back. We regularly see landlords reason on the immediate saving alone, without factoring in this holding obligation. Our recommendation is to frame the project upstream: detailed quotes, payment schedule, EPC before and after, calculation of the cost net of aids, and a letting commitment over the required period. Well managed, the scheme combines asset value, energy compliance and tax saving, a rare alignment that it would be a shame to miss for lack of anticipation.

A landlord held a flat rated F, hard to let and threatened by the rental restrictions on energy sieves. He hesitated to undertake heavy works, fearing a cash effort that would not pay off.

The simulation showed that a renovation bringing the asset to class D opened the 21,400 euro cap, and that, aids deducted, the cost actually borne was largely erased by the tax saving over two years, taking the carry-forward of the surplus against property income into account. The project was launched with a pre-works EPC confirming class F, a payment schedule entirely placed within the scheme's window, rigorous tracking of invoices net of aids, and a holding commitment over the required period. The asset left the energy-sieve status, regained a market rent, while lightening the owner's taxation. Steering this type of operation calls for an overall wealth approach, which we handle with support for the director's wealth.

An energy property-deficit file is prepared before the first blow of the pickaxe, not at the time of the tax return. Here are the operational reflexes:

• Have a pre-works EPC carried out and keep it: it fixes the starting class (E, F or G).
• Ask for quotes that clearly separate eligible energy works from other items.
• Check the payment window applicable to your year and schedule payments, especially the final balance, within that period.
• Track the aids obtained (renovation grant, certificates) and calculate the net cost actually borne, the base of the deduction.
• Have a post-works EPC drawn up proving at least class D has been reached.
• Check your ability to keep the asset let until the third year following the offset, so as not to lose the benefit.

A few mistakes keep coming up in files, especially when the project is launched without prior tax framing.

• Offsetting the gross cost of the works without taking the grants received in reduction into account: a frequent source of reassessment, to be secured file by file.
• Forgetting that it is the payment date that opens the right, not the date of the works: a balance paid outside the window may fall outside the raised cap.
• Overlooking the obligation to keep the asset let until the third year following the offset, on pain of reversal.
• Confusing the energy increase with an extra cap: there is only one offset counter, raised to 21,400 euros.
• Believing that loan interest enters the deficit deductible from overall income: it can only be offset against property income.
• Undertaking works that do not reach class D: without a class jump proven by EPC, the cap stays at 10,700 euros.

To make the arrangement reliable and align it with your overall situation, it is better to validate the figures and the timeline with tax support before committing the spend, in keeping with your rental management obligations.