The definitive answer: Should you pay more taxes to get a prime rate, or keep taxes low and accept a slightly higher interest rate? Most self-employed borrowers save money with the alternative lender route.
Side-by-Side
Interest + taxes combined
True Cost Analysis
Taxes + interest = real cost
Clear Verdict
Which option wins & by how much
Enter your mortgage details, income levels, and rates to see the complete picture.
Typical: 1% of mortgage
Typical: 0.5%–1% on alt deals
Interest savings alone don't tell the full story. You must factor in the extra taxes you'd pay to qualify.
Lower rate, but declare higher income
Interest paid + extra taxes over term
Higher rate, but keep taxes low
Interest + lender/broker fees (no extra taxes)
THE VERDICT
$57,100
Alternative lender saves you $57,100 over 5 years when you factor in the tax savings.
The higher interest rate costs more, but it's far less than the extra taxes you'd pay to qualify at a prime lender.
Most borrowers only compare interest rates. But when you're self-employed, the hidden cost is taxes — and it's usually much larger than the rate difference.
The True Cost Formula:
Total Real Cost = Interest Paid + Extra Taxes Over Term
Prime Lender
Lower interest + higher taxes = often MORE expensive
Alternative Lender
Higher interest + lower taxes = often LESS expensive
The Difference
Usually $20K-$80K+ in savings over a 5-year term
The extra taxes you'd pay to qualify at a prime lender aren't a one-time cost. You'd pay them every year of your mortgage term — $15K-$20K per year adds up fast.
The typical spread between A and B lender rates is 1-2%. On a $500K mortgage, that's about $400/month difference — far less than the monthly tax cost of declaring $70K more income.
Start with a B-lender, build equity, and transition to a prime lender at renewal when your financial picture allows — many borrowers do this within 2-3 years.
B-lenders in Canada are fully regulated by FSRA (Ontario) and other provincial regulators. They follow the same consumer protection rules as banks.
In most cases for self-employed borrowers with a significant gap between CRA income and stated income, yes. The tax savings typically outweigh the extra interest cost. However, if the income gap is small, the prime rate could win. This calculator shows you the exact crossover point.
If your CRA income already qualifies you for a prime mortgage, then the prime lender is clearly the better choice — you get the lower rate without any additional tax cost. This calculator is most relevant for borrowers whose CRA income is lower than what prime lenders require.
This calculator focuses on the cost comparison between the two paths, not on qualification. The stress test affects how much you can borrow — prime lenders apply the federal stress test, while many B-lenders use their own contract rate for qualification.
Some B-lenders charge a lender fee (typically 0.5-1% of the mortgage amount) and may require a broker fee. These are usually added to the mortgage balance. Even with fees included, the alternative lender route is typically cheaper when the income gap is significant.
Absolutely. Many borrowers use the B-lender as a stepping stone. At renewal (typically 1-3 years), if your income situation has changed, you can qualify to port to a prime lender at a lower rate. This is a very common and effective strategy.
Every situation is unique. Our brokers will run a personalized analysis with actual lender rates, fees, and your exact tax situation to find the cheapest path to homeownership.
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