French reference tax income (RFR): where to find it and why it matters so much
The RFR appears on the first page of your French tax assessment. It isn’t your taxable income: it adds back certain exempt income (overtime, foreign income under tax credit…) and acts as the gateway to many benefits, exemptions and reduced rates.
Where to find it
On your income tax assessment, “Vos références” frame, first page — and in your impots.gouv.fr account under documents. The ASDIR (the proof issued right after filing online) also shows it, without waiting for the summer assessment.
Why it’s larger than your taxable income
The RFR starts from net taxable income then adds back exempt or separately-taxed items: exempt overtime, foreign income neutralized by a tax credit (box 8TK), certain allowances and capital gains. Two households paying the same tax can thus have very different RFRs.
That’s by design: the RFR measures the household’s real capacity, and it — not the tax paid — drives student grants, canteen or daycare pricing, seniors’ property tax exemptions, reduced CSG rates on pensions, or the energy voucher.
Cross-border workers: your RFR isn’t “small”
A Luxembourg or German salary declared under 1AF/8TK isn’t taxed in France, but it does enter the RFR: don’t be surprised if a means-tested benefit is denied while your French tax is zero — the RFR is what counts.
Frequently asked questions
How can I lower my RFR?
Through mechanisms that reduce net taxable income: PER contributions (box 6NS), alimony paid, actual expenses… Tax reductions and credits (donations, home employment) cut the tax but NOT the RFR.
Which RFR is used for a benefit requested in 2026?
Generally the one on the assessment received in 2025 (2024 income), sometimes the 2026 one (2025 income) depending on the body — each scheme states its “reference year”.