How much of your incomeis already spoken for?
Enter your household income, mortgage costs and monthly debts to estimate the GDS and TDS ratios a lender may consider during mortgage qualification.
Qualification Snapshot
GDS
39%
Housing costs
TDS
44%
Housing + debts
What this helps you see
How your monthly obligations compare with your income.
Planning illustration only. Lender calculations may differ.
GDS looks at housing
Mortgage payment, taxes, heating and qualifying condo fees are considered.
TDS adds other debts
Existing monthly debt obligations are added to the housing costs.
Ratios help with planning
They are an important part of qualification, but not a mortgage approval.
Build Your Estimate
Start with your income, mortgage and monthly costs.
Change any of the numbers and your estimated GDS and TDS ratios will update automatically.
Your information
Tell us about your income and monthly costs
Enter the numbers below and we'll estimate your GDS and TDS ratios.
Enter your household income before income tax.
Enter the mortgage amount you expect to borrow.
Available amortizations can vary depending on the mortgage.
For qualification, lenders may use the full property tax amount before rebates or grants, including the BC Home Owner Grant.
Not sure? $100/month is a reasonable starting estimate.
This estimate uses 50% of the amount entered.
Include things like loans, leases, lines of credit, credit cards and other regular debt obligations.
Your results
Here's what we found.
One or both estimated ratios are above commonly used planning guidelines.
This does not mean you cannot qualify for a mortgage. A lender may calculate parts of your application differently.
Estimated GDS
45.2%
Housing costs compared with your gross household income
Estimated TDS
45.2%
Housing costs and other debts compared with your gross household income
Qualifying mortgage payment
$4,015
Estimated using a 6.49% qualifying rate
Why are these only estimates?
Lenders and mortgage insurers may calculate income, debts, property taxes, housing costs and other parts of an application differently. These numbers are for planning and should not be treated as a lender's final calculation.
Want to understand the ratios themselves? Read What Are GDS and TDS Ratios?
What This Means
Useful ratios, but not a mortgage approval.
GDS and TDS help show how much of your gross household income may be required for housing costs and other monthly debts. They are one of the ways lenders assess whether the mortgage fits within the rest of your financial obligations.
Gross Debt Service
GDS compares qualifying housing costs with gross household income. As a general planning guideline, many mortgage calculations use up to 39%.
Total Debt Service
TDS adds other monthly debt obligations to the housing costs. A common planning guideline is up to 44%.
The lender's numbers may differ
Income treatment, debt payments, property taxes and insurer guidelines can all affect the ratios used on an actual application.
One thing to remember
A lender may use numbers that differ from what you personally pay. Property taxes, income and debt obligations can all be treated differently depending on the lender and mortgage insurer.
Want the plain-English explanation?
Read how GDS and TDS work and why lenders use them.
Continue Planning
Continue Your Home Buying Journey
These resources build on what you’ve just learned and can help you take the next step with more confidence.
Income Required Calculator
Work backwards from a home price, housing costs and monthly debts to estimate the income you may need.
Estimate IncomeMortgage Payment Planner
Estimate your monthly, bi-weekly or accelerated bi-weekly mortgage payment.
Open PlannerClosing Costs Planner
Estimate property transfer tax, legal fees and other costs to plan for when buying a home.
Open PlannerA Note from Kiersten
Want me to check the actual numbers?
GDS and TDS are useful planning tools, but every lender can look at an application a little differently. If you have a specific home or mortgage in mind, send me the numbers and I'll help you see how they may actually be treated.
