🏦 Corporate Tax France vs Belgium Fiscal Drag 2026

Both countries offer participation exemptions on dividends and capital gains, but Belgium is materially stronger for holding company structures in 2026. Belgium's DRD provides a 100% exemption on qualifying dividends versus France's 95%. Belgium's capital gains exemption on qualifying shareholdings is not subject to a 12% surtax equivalent, unlike France's quote-part de frais et charges. For multinational groups seeking a European dividend conduit or subsidiary holding structure, Belgium is generally the preferred choice between the two.

France's CIR is one of Europe's most generous R&D incentives: a 30% tax credit on qualifying R&D expenditure up to EUR 100 million and 5% above that. This directly reduces tax payable (not just taxable income). Belgium offers the IID on IP income (3.75% effective rate) and R&D withholding tax exemptions on wages paid to researchers. For companies with large R&D budgets seeking to reduce the cash cost of research, France's CIR is more immediately impactful than Belgium's regime. For IP income exploitation once R&D is complete, Belgium's IID wins.

No. The exceptional contribution (CEBGE) only applies to companies with French turnover of at least EUR 1 billion in the first relevant fiscal year (or the preceding year) and at least EUR 1.5 billion in the second year. Standard French companies below these thresholds pay the standard 25% rate. The surtax was introduced in the 2024 fiscal measures and extended by the Finance Law for 2026, enacted 20 February 2026, to fiscal years ending in 2025 and 2026. Its continuation beyond 2026 is not yet confirmed.

Belgium's Notional Interest Deduction (NID) is an incentive for equity-financed companies. It provides a deduction from the taxable base based on incremental increases in equity capital over a 5-year moving average, multiplied by the 10-year Belgian government bond rate. This deduction reduces taxable profit without the company actually paying interest to anyone. It was originally introduced to level the playing field between debt and equity financing. The NID rate has been relatively low in recent years (approximately 0.943% for general companies and 1.443% for SMEs) given low government bond rates, but it remains a structurally useful incentive that France has no equivalent for.

From 2026, Belgium restricts CIT deductibility of company cars to zero-emission vehicles only. This means conventional petrol and diesel cars, as well as hybrids, purchased from 2027 will progressively lose their tax deductibility - declining to 67.5% by 2031. Zero-emission cars purchased before 1 January 2027 are grandfathered at 100% deductibility. Belgian companies with large conventional car fleets should plan proactively: new fleet acquisitions should prioritise electric vehicles before the 2027 purchase deadline. France has no equivalent broad restriction in 2026, retaining a formula-based deductibility system based on CO2 emissions.

For a tech startup in the early years, both countries offer SME-friendly reduced rates. Belgium's 20% SME rate on the first EUR 100.000 is available if conditions are met. France's 15% rate covers only the first EUR 42.500 but is lower at that tier. For a startup developing patentable software or technology, Belgium's IID regime (3.75% effective on qualifying IP income) is a major long-term structural advantage that activates as soon as the company starts generating IP income. France's CIR at 30% is more valuable in the early R&D phase when the company is spending on research. The optimal strategy for many tech companies would be to research in France (capturing CIR), then hold and commercialise IP through a Belgian entity (capturing IID).

No. Belgium's new exit tax introduced in 2026 applies specifically to situations where a company emigrates (moves its registered office or management) to another country or undergoes a cross-border restructuring that transfers assets abroad. It creates a deemed dividend concept for shareholders in these specific situations. Normal dividend distributions from Belgian resident companies to shareholders are not affected by the exit tax - they continue to be governed by the DRD and standard withholding tax rules. Companies planning cross-border mergers, transfers of assets abroad, or emigration of their registered office from Belgium should take specific advice on how the new exit tax applies.