The mortgage pre-approval process is stranger than I expected

I went through the mortgage pre-approval process for an investment property in March. Here's exactly what happened.

The stress test

Canada's mortgage stress test requires qualifying at either the Bank of Canada benchmark rate (currently 5.25%) or your contract rate plus 2%, whichever is higher. At 5.9%, you prove you can afford payments at 7.9%.

For investment properties, lenders add another layer — they typically only count 50–80% of rental income when calculating qualifying income.

GDS and TDS ratios

Gross Debt Service (GDS): housing costs divided by gross income. Most lenders cap at 39%.

Total Debt Service (TDS): all debt payments divided by gross income. Most lenders cap at 44%.

The number that surprised me

My pre-approval was structured around a gap I hadn't expected: no rental history. As a first-time investor, I couldn't demonstrate a track record.

The solution: put 25% down instead of 20%. The extra equity reduces the lender's risk enough to compensate. It means more capital tied up in the first deal, but it gets the deal done.

Talk to a mortgage broker, not just your bank — brokers have access to multiple lenders and know which ones are more flexible on investment property qualifications.