Model 721 in Spain: crypto reporting rules for residents with assets abroad
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"Updated with the first wave of Hacienda post-721 audit activity and feedback from the 2025 filing season."
Modelo 721 requires Spanish tax residents to declare crypto-assets held on foreign platforms if the total value exceeds €50,000 at 31 December. In force since the 2023 tax year (filed in 2024), it applies to Bitcoin, Ethereum, stablecoins, NFTs, and all tokens held outside Spain. Penalties for omission follow the reformed Modelo 720 regime. Most foreign expats have never heard of it.
1. The birth of Modelo 721: closing a major tax gap
For several years, crypto-assets represented a genuine grey area in Spanish tax law. Modelo 720 covered conventional foreign assets — bank accounts, securities, real estate — but cryptocurrencies were not explicitly included. This gap allowed many holders to declare nothing at all, sometimes in complete good faith.
Ley 11/2021 de medidas de prevención y lucha contra el fraude fiscal created the legal framework. The implementing regulation finalised Modelo 721, which came into force for the 2023 tax year. It is therefore a relatively recent obligation — which explains why so many expats are still completely unaware of it.
"Las personas y entidades residentes en España que sean titulares, beneficiarios, autorizados u ostenten poder de disposición sobre monedas virtuales situadas en el extranjero [...] estarán obligadas a presentar una declaración informativa acerca de dichas monedas."
Ley 11/2021 — Ley de prevención y lucha contra el fraude fiscal, BOE
2. What Modelo 721 actually covers
| Asset type | Covered by Modelo 721 | Notes |
|---|---|---|
| Bitcoin (BTC) on a foreign exchange | Yes | If total value > €50,000 at 31 December |
| Ethereum (ETH) in a personal wallet | Yes | Wallet not managed by a Spanish provider |
| Stablecoins (USDT, USDC) on Binance | Yes | Binance is a foreign platform for Spanish tax purposes |
| NFTs held on OpenSea or foreign marketplace | Yes | If total value > €50,000 |
| Staking or yield farming tokens | Yes | If held on foreign protocols |
| Crypto on a Spanish CNMV-regulated platform | No — Modelo 172 | Declared by the Spanish provider |
| Crypto bought and immediately sold (no remaining balance) | No | No residual balance to declare |
Unlike Modelo 720 where the €50,000 threshold applies per asset category, for Modelo 721 the total value of all your foreign crypto-assets is aggregated. If you hold €30,000 in Bitcoin on Binance and €25,000 in Ethereum in a personal wallet, the combined total of €55,000 exceeds the threshold and the declaration is mandatory.
3. The most common platforms and their status
✓ Status of the main platforms for Modelo 721 purposes
- Binance: a foreign platform for Spanish users (European entity registered outside Spain). All Binance balances exceeding the aggregated threshold fall within the scope of Modelo 721.
- Coinbase: same analysis. Coinbase Europe operates from Ireland — a foreign platform for Spanish tax purposes. Balances must be declared via Modelo 721 if the threshold is reached.
- Kraken: registered in the United States and Europe (Irish/European entity). Foreign platform, same treatment.
- Ledger / Trezor (hardware wallets): assets held in self-custody on these wallets must be declared via Modelo 721 as 'monedas virtuales situadas en el extranjero', because the wallet is not managed by a Spanish provider.
- MetaMask (decentralised wallet): same analysis as hardware wallets. Decentralised self-custody is treated as a foreign holding if the underlying protocol is not Spanish.
- Spanish CNMV-regulated platforms (Bit2Me, Criptan, etc.): reporting handled by the platform via Modelo 172. No Modelo 721 obligation for these balances.
4. How to value crypto-assets for the form
The reference value is the market value in euros at 31 December at midnight. For Bitcoin, Ethereum, and major assets, the price references used by Hacienda are generally those of major exchanges or CoinMarketCap/CoinGecko indices. For illiquid tokens or NFTs, valuation is more complex — your gestor can advise on the most defensible method.
The volatility of crypto-assets creates a specific challenge: a portfolio worth €80,000 on 30 December may be worth €45,000 on 31 December if the market corrects. The reference date is strictly 31 December — not a yearly average.
- Export a complete record of your holdings at 31 December
All serious exchanges (Binance, Coinbase, Kraken) allow you to export a portfolio statement at a specific date. Run this export on 31 December or 1 January. Save the documents in both CSV and PDF format.
- Value each asset in euros at the reference date
For each crypto held, record the price in euros at 31 December (CoinGecko or CoinMarketCap are acceptable references). Multiply the quantity by the unit price. Add up all your balances to check whether the €50,000 threshold is reached.
- Include personal wallets in your inventory
List your hardware wallets (Ledger, Trezor) and software wallets (MetaMask, Trust Wallet). Balances from these wallets are added to those from exchanges when calculating the global threshold.
- Send the data to your gestor before 15 February
Modelo 721 requires technical review by a professional familiar with crypto taxation. Not all gestors have experience with this form — verify that yours has handled similar cases before.
5. Modelo 721 vs Modelo 720: the key differences
721 vs 720 — What is identical and what differs
- Same filing window: 1 January to 31 March of year N+1.
- Same triggering threshold: €50,000.
- Same filing channel: Sede Electrónica de la Agencia Tributaria.
- Same philosophy: informational declaration, no direct tax payment generated by filing.
- Same reformed penalty regime following CJEU 2022.
- Threshold applied globally (total crypto) vs per category for Modelo 720.
- Valuation at market value for crypto vs acquisition cost for real estate under Modelo 720.
- Greater ambiguity for illiquid assets (DeFi positions, NFTs, unlisted tokens).
- No consolidated case law on edge cases yet — doctrine still forming.
- Annual filing obligation each year the threshold is met (the Modelo 720 rule of a €20,000 variation does not apply in the same way).
6. The IRPF dimension: declaring crypto is not enough
Modelo 721 is an informational declaration — filing it does not in itself generate a tax payment. But gains realised on your crypto-assets must be declared separately in your annual IRPF return (Modelo 100, or Modelo 151 if you are under the Ley Beckham regime).
Under Spanish law, gains and losses on crypto-assets are treated as ganancias y pérdidas patrimoniales — taxed within the savings tax base under progressive rates:
Crypto gain taxation in Spain — Savings tax base 2025
| Net gain bracket | Applicable rate |
|---|---|
| €0 – €6,000 | 19% |
| €6,000 – €50,000 | 21% |
| €50,000 – €200,000 | 23% |
| €200,000 – €300,000 | 27% |
| Above €300,000 | 28% |
Losses are deductible against gains of the same nature, and unabsorbed losses can be carried forward over the following 4 tax years. Your gestor must consolidate all your transactions — sales, crypto-to-crypto swaps, and payment uses — to calculate your net taxable gain.
Ley 11/2021, de 9 de julio — Medidas de prevención y lucha contra el fraude fiscal
Further reading
Frequently asked questions
Do I need to declare crypto held abroad in Spain?
Do I need to declare my staking or yield farming tokens?
What if an exchange has collapsed or frozen my assets — do I still need to declare them?
Are NFTs and gaming tokens in scope?
The taxation of crypto-assets is a fast-moving field, both in Spanish law and at European level (MiCA Regulation, DAC8 directives). This article reflects the regulations and doctrine available as of 22 March 2026. Consult a gestor or tax specialist with crypto experience before filing your Modelo 721 — errors in this recently introduced form can be costly.
Amory Dumoulin
Creative Developer & Belgian Expat — Altafulla, Tarragona
"I have been holding crypto-assets for several years and living in Catalonia as a tax resident, which meant diving into Modelo 721 regulations as soon as they came into force. This guide distils what I learned — cross-checked against the official Agencia Tributaria documentation and with my gestor in Tarragona."
You hold crypto-assets and live in Spain?
Modelo 721 is a recent form that many gestors are still getting to grips with. I can point you towards professionals in Tarragona with proven experience handling crypto cases for expats.
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