assumes you invest the monthly (EMI − rent) differential + initial (downpayment + stamp − rent deposit) in equity at the return rate. property sale at horizon pays brokerage + builds equity; loan outstanding is deducted. ignores tax (section 24 deduction on interest, capital gains on sale). ignores rent paid to live somewhere in the buy scenario during construction. india-specific: property is typically illiquid, takes 6–12 months to sell.