If you are considering lending money to, or subscribing for shares in, an unquoted trading company then, like many investments, there is always a risk that you may lose your money.
However, there is potentially tax relief for the lender if the loan meets certain conditions, in particular the money lent is used by the borrower wholly for the purposes of its trade, and the trade does not consist of or include the lending of money.
The tax relief is by way of a capital loss that can be set against gains in the same or future tax years. In order to make a claim for capital loss relief, any outstanding amount of the principal of the loan must have become irrecoverable, the claimant must not have assigned their right to recover that amount, and the claimant and the borrower were not each other’s spouses or civil partners, or companies in the same group, when the loan was made or at any subsequent time.