Trust Wallet and the Spanish tax agency: what you must declare if you keep your crypto in your own wallet

Trust Wallet is one of the most popular wallets for keeping crypto outside exchanges, and since Binance stopped operating in Spain in July 2026, many users have chosen it to move their funds out. The most common question is whether the tax agency can see what is in it and what has to be declared.

The answer has two parts: holding crypto in Trust Wallet does not trigger any information return, but what you do with it can be taxable.

• Trust Wallet does not report to the tax agency. It is a self-custody wallet: you control the keys and there is no company holding your funds and reporting to the AEAT.
• It does not go on form 721. Spain's Directorate General for Taxation has confirmed that crypto in self-custody, when the holder controls the keys, is not declared on form 721.
• What you do from it is taxable. A token swap is a disposal, and staking and airdrops generate income. The fact that the wallet does not report does not make them invisible.
• It may go on form 714. If you are liable for wealth tax, the crypto in your wallet counts like the rest of your assets.

Trust Wallet does not send it anything, but that does not mean your movements are invisible:

• The exchange you came from does report. If you bought on an exchange and withdrew to Trust Wallet, that withdrawal is on record at the exchange, and since 2026 the DAC8 directive requires providers to report their customers' transactions, including transfers to external addresses.
• The blockchain is public. Once an address is linked to your identity, for example by receiving funds from an exchange in your name, anyone can follow its movements.
• The way back leaves a trail too. When you move the crypto back to an exchange to sell it, the tax agency will see the sale and will ask you to prove its acquisition cost.

So what matters is not whether the tax agency can see your wallet, but that you can explain every figure when you declare.

Swaps are what people overlook most. Swapping USDT for a token in the app itself, or connecting the wallet to a DeFi protocol to do it, is a disposal just as if you did it on an exchange. If you want to go deeper, we explain it in our guide to DeFi taxation.

An exchange lets you download a CSV of your transactions. A self-custody wallet does not: the history lives on the blockchain of each network you have used. To declare, you need to rebuild it from your public addresses, network by network, with explorers such as Etherscan or BscScan or with tools that read the blockchain.

That is where the typical mistakes appear:

• Deposits without an acquisition cost. Crypto arriving from an exchange appears in the wallet with no purchase price. If it is not matched with its withdrawal at the origin, an automated tool may treat it as if it cost you nothing.
• Misclassified swaps. A swap can show up as two separate movements, one out and one in, instead of a single disposal.
• Spam tokens. Many wallets receive worthless tokens that a tool may value as if they were real.
• Several networks. If you have used Ethereum, BNB Chain and Solana from the same app, those are three separate histories that need joining up.

Forms 721 and 714 are different things. Form 721 is purely informative and covers crypto held in custody abroad, so your wallet stays out. Form 714, for wealth tax, taxes your entire net worth if you exceed your region's thresholds, and there the crypto you keep in your own wallet does count, valued at 31 December.

• Gather your public addresses for every network you have used. Never share your seed phrase: you do not need it to declare.
• Rebuild the history of each network and join the movements with those of your exchanges.
• Match every deposit with its origin to keep the acquisition cost.
• Calculate every swap and sale with FIFO, the method the tax agency applies.
• Declare staking rewards and airdrops in their section.

You will find how it all goes on your return on our page on how to declare crypto in Spain.

Do I have to declare the crypto I hold in Trust Wallet?

Holding it is not taxable for income tax and does not go on form 721. What you declare are the transactions: swaps, sales, staking and airdrops. And if you are liable for wealth tax, its value at 31 December goes on form 714.

Can the tax agency find out how much is in my wallet?

Trust Wallet does not report to it, but if the address can be linked to you, for example because you received funds from an exchange in your name, its movements are public on the blockchain.

Is moving my crypto from an exchange to Trust Wallet taxable?

No. It is a transfer between your own accounts. Keep the withdrawal record: it will help you prove the acquisition cost when you sell.

We rebuild your history from your public addresses, never asking for your seed phrase, join it with your exchanges, classify every swap and calculate your gains with FIFO, with a trail behind every figure. See our pricing or tell us about your case on our crypto tax report page.