Sean McCue

I have a Trading 212 account in which I buy single shares and also have pie shares which is multiple of companies in a pot, these do pay dividend however Trading 212 have an auto reinvest option to both the single or pie shares. My question is... if I select auto reinvest on both single and pie shares am I liable to pay tax on the dividend if I select auto reinvest if the auto reinvested is over the £500 a year dividend threshold or can it reinvest any quantity tax free and only pay capital gains tax when I sell the shares.