This is a general rule for all your investments. Always consider the tax impact of any investment you do. Different asset classes and investments can be taxed in different ways, so you need to look at that as it will affect your net return, sometimes in a drastic way.
The UK tax authority has issued a good guide that should be applicable to many other countries in the EU too, although it’s always important to check with your country’s authorities for specific guidance.
The advantage of peer to peer loans for lenders is that they can generate higher interest rates that exceed the interest that could be earned from banks and other financial institutions.
P2P loan platforms also give borrowers an alternative to the finance which they may get from standard financial intermediaries.