The Mortgage Debt Services Ratios Calculator estimates the Gross Debt Service Ratio and Total Debt Service Ratio that apply when entering a mortgage.

 
Gross Debt Service Ratio (GDS)

Your Monthly
Housing Costs		 Your Numbers Our
Example
Principal
& Interest

$

$840
Property
Taxes

$

$220
Heating
Costs

$

$180
Total $ $1,240
Gross
Monthly
Income

$

$4,500
GDS % 27.6%

This is how its calculated:

$1,240

 x 100=27.6%
Gross debt services ratio
should not exceed 32%

$4,500

  
 
Total Debt Service Ratio (TDS)

Your Total
Monthly Debts		 Your Numbers Our
Example
Monthly
Housing
Costs

$

$1,240
All other
Liabilities

$

$550
Total $ $1,790
Gross
Monthly
Income

$

$4,500
TDS % 39.8%

This is how its calculated: $1,790 x 100=39.8%
Total debt services ratio
should not exceed 40%		 $4,500