02/22/2021
It's a good idea to understand how lenders calculate the maximum amount they will loan you. The two calculations a lender does are: your gross debt service ratio (GDS) and your total debt service ratio (TDS).
To see how both calculations work, read more below.
Gross Debt Service Ratio (GDS)
To calculate your GDS, lenders try to figure out the proportion of your income you would be paying each month to own a particular property. If the answer equals less than 32 per cent (industry standard), the lender can feel confident in your ability to pay your monthly housing costs.
Total Debt Service Ratio (TDS)
To calculate your TDS, the lender will take the same GDS calculation but add in any other monthly payments you might have to make, including loans or the minimum payments on any credit card debt. If the answer equals less than 40 per cent (industry standard), the lender will know you have the money to make all of your monthly payments and you will be on track with getting approved for a mortgage.
What happens if I'm over the industry standard?
If either of your answers go over than the industry standards, you may want to save more for your down payment and/or pay off some existing debt before buying. If you have a high credit score or some valuable assets, you may still qualify for a mortgage, even if your GDS and TDS are slightly higher than the industry standards.