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 ; L! \9 f o' Y# G' }# ?. c: c3 afrom 35% to 42% of gross income.; P; j: U+ d: p! Q6 t e
GDSR(gross debt service ratio)=(payment of principal and interest on mortgage+property taxes+heating costs+50% of condominium fees)/gross income.