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 ) G9 ?+ Q* `9 ?5 i% y# Xfrom 35% to 42% of gross income.4 ~& g1 S. H$ p) ]) H
GDSR(gross debt service ratio)=(payment of principal and interest on mortgage+property taxes+heating costs+50% of condominium fees)/gross income.