Dear Economist,
I gave my sister a 30 per cent share of my mortgage when buying a new house two years ago so she could get on the property ladder. In return, she gave me some money towards the deposit on the house – about 20 per cent of the total put down. Given my larger share of the investment and commitment, should I get a greater proportion of the equity than my 70 per cent share, if and when we sell?
Ben

Dear Ben,