If you are a US person or a UK individual selling Marbella property, you are not paying Spanish tax in isolation — you are paying tax twice (once to Spain, once to your home jurisdiction) and reclaiming the overlap through treaty credits. The coordination is mechanical and the timing matters. Sellers who treat the Spanish tax bill as the only event routinely overpay by 5-15% of net gain through missed credits, mistimed sales, or structuring oversights.
A US seller selling Marbella property in 2026 pays 24% Spanish IRNR on the realised gain plus 15-23.8% US federal capital gains tax (long-term, depending on income tier and Net Investment Income Tax exposure), with the Spanish tax credited against US tax under the US-Spain Tax Treaty (1990, as updated by 2019 Protocol) — net effective rate typically 23-26% if structured correctly. A UK seller pays 19% Spanish IRNR (post-Brexit UK retains EU/EEA-equivalent rate under continuing reciprocal arrangements) plus 24% UK CGT on residential property at the higher rate, with Spanish tax credited under the UK-Spain Treaty — net effective rate typically 24-28%. Pre-sale restructuring (entity-vs-personal sale, holding period management, US-side QSBS-equivalent considerations, UK-side principal-private-residence relief) can move the effective rate by 3-8 percentage points. The coordination requires dual-licensed advisors — Spanish abogado fiscal plus US CPA or UK chartered tax advisor — engaged 4-9 months pre-sale, not at the contract stage.
Spanish IRNR (Impuesto sobre la Renta de no Residentes) for property sales by non-resident individuals is governed by Real Decreto Legislativo 5/2004 and the implementing regulations. The mechanics are reasonably straightforward.
The realised gain. Sale price minus adjusted acquisition cost. Adjusted acquisition cost equals original purchase price plus documented transaction costs (notary, registry, ITP/AJD, legal fees, original agent commission) plus capitalised improvements (with verifiable invoices) plus any other deductible-cost items.
The IRNR rate. - 19% for EU/EEA residents (Germany, France, Netherlands, Sweden, Norway, plus post-Brexit UK under reciprocal arrangements). - 24% for non-EU residents (US, UAE, Canada, Australia, Japan, China, India).
The 3% buyer-side retention. Under Article 25.2 of the IRNR law, the buyer of a property from a non-resident seller withholds 3% of the deed price and pays it to AEAT via Modelo 211 within one month. This is a payment-on-account against the seller's eventual CGT liability — not an additional tax. The seller files Modelo 210 within 4 months of completion to settle the actual CGT and either pays the balance or claims a refund of over-retention. Detail in IRNR Spanish tax non-residents.
Andalucía plusvalía. Separate from CGT; municipal land-value-gain tax. Worked examples in the pillar Selling Marbella property complete guide 2026.
US persons (US citizens, green card holders, US tax residents) are taxed on worldwide capital gains regardless of where the asset sits. The Spanish IRNR is therefore one leg of a two-leg tax bill.