Canada's best-known strategy for turning non-deductible mortgage interest into tax-deductible investment interest — powerful, but only as strong as the paper trail behind it. Finngo's founder is a Smith Manoeuvre Certified Accounting Professional, and our team keeps the books and filings CRA-ready.
A brief, plain-English version.
With a readvanceable mortgage, each principal payment frees up room you can re-borrow to invest in income-producing assets. Interest on money borrowed to earn investment income is generally tax-deductible in Canada — your home mortgage interest is not. Done consistently, the strategy gradually converts non-deductible debt into deductible debt while building an investment portfolio.
CRA deductibility hinges on tracing: every borrowed dollar must be traceable to an income-producing use, with no commingling of funds. That means separate credit lines and accounts, precise interest tracking, and consistent reporting every single year. A great strategy with sloppy records is how deductions get denied.
Real estate investors can pair the same mechanics with rental cash flow — often called the cash flow dam. Hear our team explain it on the Canadian Real Estate Investing Morning Show.
Accounts and bookkeeping in QuickBooks Online structured so borrowed funds, investment income, and interest are cleanly separated from day one.
Month over month, the borrowing-to-investment trail stays documented and reconciled — the records CRA would ask for, ready before they ask.
Interest deductions claimed correctly on your returns, coordinated with your mortgage broker and financial advisor so the whole team is working from the same numbers.
The Smith Manoeuvre involves leverage: borrowing to invest magnifies both gains and losses, and deductibility depends on your specific facts. This page is general information, not financial, investment, or tax advice for your situation — that's what the consultation is for, alongside your licensed financial advisor and mortgage professional.
Talk to a team that's certified in it — and does the bookkeeping that makes it hold up.
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