Fuel aid for builders extended to August diesel

The exceptional fuel aid for building and public-works companies using non-road diesel is extended to August 2026Service Public. The grant remains 20 cents per litre of non-road dieselService Public invoiced between 1 and 31 August 2026 inclusiveService Public, capped at 4,000 euros per companyService Public; the page lists décret n° 2026-850 of 9 September 2026 among its legal references.

Eligibility is unchanged: companies whose principal activity is in a listed building and public-works sectorLegifrance, operating qualifying non-road mobile machineryLegifrance, registered in the national business registerLegifrance with a declared start of activity no later than 31 March 2026 and not wound up at that dateLegifrance, with no more than 50 employeesService Public, annual turnover below 50 million euros or a balance-sheet total below 43 million euros assessed at group level where controlledLegifrance, not subject to safeguard, receivership or liquidation proceedingsLegifrance, current with tax and social filing dutiesLegifrance and with no unpaid tax or social debts at 31 March 2026 — disregarding tax debts of 1,500 euros or less, debts settled or covered by a respected payment plan by the application date, and debts under unresolved disputeLegifrance. Applications are filed by form on impots.gouv.fr between 1 and 30 September 2026 inclusiveService Public, with one application per companyLegifrance; the July round required a sworn statement, the month's diesel invoices, the business sector, bank details and the de minimis aid amounts received over the rolling three-year period.

Restitution applies in full where the grant exceeds 600 euros and the excédent brut d'exploitation for the fiscal year in which the aid is granted is positive and at least 98% of the previous fiscal year's figure, calculated after deducting the aid amounts received under the May, June and August decreesLegifrance. The direction générale des finances publiques recovers sums where the supporting documents are not sent in time or the conditions are metLegifrance; companies have 15 days to supply any additional information requestedLegifrance.

The measure, introduced in May 2026 after fuel-price rises linked to the Middle East war, continues month by month by decree; the July round under décret n° 2026-720 required filing between 3 and 31 August 2026.

Legal basis: décrets n° 2026-356 of 8 May 2026, n° 2026-577 of 30 June 2026, n° 2026-720 of 1 August 2026 and n° 2026-850 of 9 September 2026, as reported by entreprendre.service-public.fr A18905.