Most people building wealth in Canada treat their financial plan like a sequence: pay down the mortgage, then max the TFSA, then contribute to the RRSP, then maybe consider leverage. The Smith Manoeuvre™ sits outside that sequence entirely because it doesn't use new money.

The strategy converts non-deductible mortgage interest into tax-deductible investment loan interest using what practitioners call "found money", the principal portion of a mortgage payment you're already making. Every month, part of your payment reduces the balance owing on your home. With a readvanceable mortgage, that principal reduction immediately increases the available credit limit in the attached Home Equity Line of Credit (HELOC). You borrow that amount back through the HELOC and invest it. The interest on the borrowed amount is tax-deductible, provided the investment generates income: dividends, interest, or rent. The CRA's test is whether there's a reasonable expectation of income from the investment.

Here's the critical piece that gets missed. The Smith Manoeuvre™ doesn't take cash out of your budget. Your mortgage payment stays the same. You're still making your $2,400 monthly payment, still reducing the debt by $900 in principal and paying $1,500 in interest. What changes is that the $900 in equity you just created gets borrowed back and deployed. The HELOC interest becomes a new line item, but the tax refund from the deduction offsets part of that cost. If you're already contributing $500 a month to your TFSA and $400 to your RRSP, those contributions continue untouched.

The question of timing becomes irrelevant once you understand this. You don't need to have maxed your TFSA room before starting the Smith Manoeuvre™. The two accounts serve different purposes under different tax rules. The TFSA shelters growth from tax. The Smith Manoeuvre™ turns a liability (mortgage interest) into a deduction while building a non-registered portfolio. You're not choosing between them. You're running both.

Why the accounts stay separate

The interest deduction only works if the borrowed money goes into a non-registered account. Money borrowed to fund a TFSA or RRSP isn't eligible for the deduction under CRA rules. That structural constraint means the Smith Manoeuvre™ and your registered account contributions never compete for the same dollars or the same tax treatment. One operates inside the registered system. The other operates outside it, using debt as the vehicle.

The psychological shift matters here. Most people see equity in their home as either locked capital or something to tap only in an emergency. The Smith Manoeuvre™ reframes it as active capital that compounds alongside your registered savings. You're not sacrificing one for the other. The mortgage payment was happening anyway. The strategy just gives that payment a second job.

What the compounding actually looks like

A borrower in the 45% marginal tax bracket paying 5.5% to 6.2% interest on the HELOC effectively pays 3.575% after the deduction. If the invested portfolio returns 7% annually through dividends and growth, the spread is 3.425%. That spread compounds over the life of the mortgage while your TFSA and RRSP contributions compound in parallel. The tax refund from the deduction can be applied directly to the mortgage principal, which increases the HELOC room faster and accelerates the entire cycle.

This isn't a short-term tactic. The average implementation runs 15 to 25 years, long enough to smooth out market volatility and let the tax benefit accumulate. But it operates in the background. You keep funding your TFSA in January. You keep making RRSP contributions before the deadline. The Smith Manoeuvre™ doesn't interrupt either. It just adds a third track.