TDSR(Total debt service ratio)=(payment of principal and interest on mortgage+property tax +heating costs+50% of condominium fees+payments on other personal loan)/grss income. TDSR guidelines Currently range 2 B5 A7 S* U1 O' y4 C6 W. J5 Ufrom 35% to 42% of gross income.+ j) N9 |) U7 @2 X, v$ a1 B _* r
GDSR(gross debt service ratio)=(payment of principal and interest on mortgage+property taxes+heating costs+50% of condominium fees)/gross income.