Luxembourg taxes worldwide income at up to 45.78% combined, sorts households into three tax classes, and offers no special deal for retirees. What saves the math: solid US and Canada treaties, no tax on US Social Security here — and the EU's lowest VAT.
Figures verified 30 September 2026 Rules checked 30 September 2026You're tax-resident if your domicile or habitual abode is in Luxembourg — staying more than 6 months generally does it. Residents are taxed on worldwide income; the tax authority is the ACD (Administration des contributions directes). Married couples are currently assessed jointly in class 2, which usually softens the progressive scale for single-earner households. Single people 65 and over get class 1a — slightly gentler than class 1.
| Income | Luxembourg treatment (2026) |
|---|---|
| US Social Security | Taxable only in the US under Article 19 of the 1996 treaty. Not taxed by Luxembourg. |
| US private/occupational pensions, IRA & 401(k) withdrawals | Pensions for past employment are generally taxable only where you reside — i.e. in Luxembourg, at progressive rates. IRA/Roth treatment has traps; get cross-border advice. |
| CPP, OAS, RRSP/RRIF (Canada) | Governed by the 1999 Canada–Luxembourg treaty; treatment varies by income type and the treaty's pension article — have a cross-border adviser run your numbers before you move. |
| Investment income | Taxed in Luxembourg as a resident; dividends/interest have specific regimes and partial exemptions. |
On 6 January 2026 the government tabled draft Bill 8676: a single tax class ("Tarif U") for everyone from tax year 2028, abolishing classes 1, 1a and 2. Couples already married or partnered before it takes effect would keep class-2-equivalent treatment under a 25-year transitional tariff. It is a bill, not law. On 29 September 2026 the Chamber's finance committee adopted its report; the plenary debate and vote had not been scheduled on the Chamber's agenda as of 30 September 2026 (Chambre des Députés, dossier 8676). We'll update this page when parliament votes.
Who must file, the March deadline reality, and what deductions actually apply to newcomers.
FEIE vs foreign tax credits at Luxembourg rates, FBAR/FATCA, and why banks ask about your blue passport.
Severing residency, the deemed disposition, and what happens to your RRSP and TFSA.
The pension and IRA questions are exactly where DIY goes wrong. We'll match you with a cross-border tax specialist we've independently vetted for US–Luxembourg and Canada–Luxembourg cases. Free, no obligation.