I don’t get how it works though. Surely if you win the house you’d be fleeced with tax on it like Gift tax, Capital Gains, Inheritance tax etc. if he sells all tickets he’d get 810,000 so as you said he’d pay off the mortgage of the apartment, but a new property tax free and give a measly amount to the charity. He’s only using the charity donation to gain momentumWell with the amount they'll raise @€18x 45k tickets he will pay off the apartment mortgage, buy a new house, be mortgage free and then donate the 100k to charity. The charity is only getting that if he sells the 45k tickets. Currently on around 16k.