Smith Maneuver Calculator
See how much of your home equity could be put to work, and what it could mean for your mortgage. Answer a few quick questions for an instant estimate. No obligation, and it takes under a minute.
What this calculator estimates
The Smith Maneuver converts the non-deductible interest on your home mortgage into tax-deductible investment debt, gradually, as you pay your principal down. How much you can convert depends on one thing above all: how much equity you have available to borrow against.
That is what this tool estimates. It looks at your property value, what you still owe, and your goals, then returns an indication of the equity you could access and what it could support. Treat the result as a starting point for a conversation rather than an approval or a quote.
If you want the strategy explained in full before running your numbers, start with our guide to how the Smith Manoeuvre works in Canada.
The annual tax refund
The part most homeowners have not considered is what happens at tax time. Once the interest on your re-borrowed investment funds is deductible, it reduces your taxable income, and that produces a refund.
What makes the strategy compound is what you do with that refund. Applied straight back against your non-deductible mortgage principal, it shortens the mortgage, which frees up more credit to re-borrow and invest, which increases the following year's deductible interest. Each cycle moves a little more debt from the non-deductible side to the deductible side.
As an illustration only: $100,000 of investment loan at 5% accrues $5,000 of deductible interest in a year. At a 40% marginal tax rate that is roughly $2,000 back. Your actual figure depends on how much deductible interest you have accrued, your marginal rate and your wider tax position. Refunds are not guaranteed and this is not tax advice.
Before you rely on the numbers
The Smith Maneuver depends on having the right mortgage structure, usually a readvanceable mortgage, and on documenting how borrowed funds are actually used. Interest is only deductible where the money is invested to earn income, and the rules are specific.
It also involves borrowing to invest, which increases your risk. Markets can fall, and the debt remains regardless. This calculator does not assess suitability. That requires a look at your income, your existing mortgage, your tax position and your timeline.
Frequently Asked Questions
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