Yes, it's important that you declare to the Tax Agency the operations you make. In most jurisdictions, the profits obtained from the sale of cryptocurrencies are considered capital gains and are subject to taxes. This means that if you sell your cryptocurrencies for more money than you paid when buying them, you must pay taxes on the difference, which is considered a capital gain.
Furthermore, even if you exchange one cryptocurrency for another, this type of operation is also considered a taxable event and requires declaration. Atani helps you keep a record of all your transactions, which you can check in the "Portfolio" section of the app, to correctly calculate your gains or losses.
It's essential that you fulfill your tax obligations to avoid future problems with the tax authorities. If you have doubts about this, we recommend that you consult with a tax advisor who is familiar with the cryptocurrency laws in your country to ensure that you are correctly fulfilling all tax obligations.