From next year, the tax authority will receive crypto trade data from Finnish brokers as well as from foreign platforms. Image: Esa Syväkuru / YleSome 16,000 Finns reported their cryptocurrency trades for last year, even though the Finnish Tax Administration estimates that at least 100,000 people were active in the market. Anyone who traded should have declared it in their tax return, whether they made a profit or a loss. Juho Hasa, a senior advisor at the Finnish Tax Administration, told Yle that only an estimated 15 percent of those who should have declared their crypto trades in their tax returns have actually done so. Failing to declare trades can lead to a tax increase, interest charges, or criminal complaints. In 2025, investors reported to the tax authority crypto sales worth 3.3 billion euros for the previous year. Small crypto profits often go undeclared, while large ones are more likely to be reported, according to Juho Hasa of the tax office. Image: Samuli Holopainen / YleBitcoin association offers "easy tax tip"Antero Törhönen, chair of the Finnish Bitcoin Association, believes crypto sales go undeclared at least partly because compiling the sales data is complicated."If a person has had coins in several places and has possibly moved them from one wallet to another, reliably putting the information together is quite a difficult process," he said. Antero Törhönen of the Finnish Bitcoin Association says it can be laborious for active traders to compile their profits and losses. Image: Esa Syväkuru / YleTörhönen offered a simple way to avoid taxes: if you hold your investments, you do not have to declare them in your tax return. Simply owning crypto does not have to be reported to the tax authority, because Finland has not had a wealth tax for 20 years."Our association recommends long-term saving. It is also the easiest and lightest approach from a tax perspective," said Antero Törhönen, chair of the Finnish Bitcoin Association. More oversight on the wayRight now the tax authority has to request information on crypto trades from brokers and exchanges, both in Finland and abroad. But that changes next year, when it will begin receiving data from Finnish brokers automatically, without separate requests. Hasa estimates that as a result, around 50,000 Finns will find pre-filled details of their crypto trades in their tax returns next year. That means the number of crypto investors within the tax authority's reach will more than triple. Information will also begin to arrive from foreign trading platforms through the international Crypto-Asset Reporting Framework (CARF), a system for automatic data exchange between countries.