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- G" V/ P6 Y# i5 @! \
from 35% to 42% of gross income. 3 G" \1 }3 R2 ]1 o( `+ r7 _3 R# tGDSR(gross debt service ratio)=(payment of principal and interest on mortgage+property taxes+heating costs+50% of condominium fees)/gross income.