Every week I have the same conversation with at least one client — Should I go fixed or variable?

And almost every time, the person leaning toward variable is doing it for the same reason — they think they’re going to win. They’re watching the Bank of Canada, reading headlines about rate cuts, and betting that over the next five years they’ll come out ahead on interest. Variable is lower right now, so they take it and enjoy the savings.

Here’s the problem with that: it’s a gamble. You’re making a prediction about where rates will be in three, four, five years. And if you’re wrong — if rates hold or climb — you didn’t gain anything. You just took on more uncertainty for nothing.

But there’s another way to use a variable rate — one that isn’t a gamble at all. And most people never think to do it.

The Real Advantage of Variable

Right now, the spread between a 5-year variable and a 5-year fixed is roughly 65–80 basis points, depending on the lender and your file. On a $500,000 mortgage with a 25-year amortization, that works out to about $200 a month less on your variable payment versus what you’d be paying on the fixed.

Most people pocket that $200. It becomes an extra dinner out, a little more breathing room in the monthly budget, maybe a slightly bigger car payment. That’s a lifestyle decision. There’s nothing wrong with it — but it’s not a financial strategy. And if rates go up and your payment adjusts, that breathing room disappears and you’re left with nothing to show for the time you spent on the lower rate.

The play is simple: take the variable rate, but set your payment at what the fixed rate payment would have been.

That extra $200 a month doesn’t go to your lifestyle. It goes directly to principal reduction. Not to interest, not to the lender’s pocket — straight off your mortgage balance. Your mortgage starts shrinking faster from day one.

Why This Wins If Rates Rise

This is the objection I always hear: But Marshall, what if rates go up?

Two things happen when you’ve been using this strategy.

First, there’s no payment shock. You’ve already been making the higher payment. Your budget is built for it. The borrower who was enjoying the lower variable payment? They’re now adjusting their lifestyle to accommodate a jump they weren’t prepared for.

Second — and this is the part people miss — you’ve been aggressively paying down principal for months or years. When the higher rate kicks in, it’s applied to a smaller balance. You’re paying more in rate on less mortgage.

Meanwhile, the fixed borrower has been paying the same rate on a larger balance the entire time, because their payment was calculated to pay down principal at a slower, predictable pace.

On a $500,000 mortgage, making the fixed-rate payment on a variable rate for three years puts you roughly $7,000–$8,000 further ahead on principal versus the fixed borrower. That’s real equity you’ve built — not a gamble that paid off, but a strategy that worked regardless of where rates went.

Why This Wins If Rates Drop

If rates fall or hold steady, the advantage compounds.

Your payment stays the same, but a larger portion of each payment goes to principal as the interest component shrinks. You’re accelerating your paydown without doing anything differently. The gap between your balance and the fixed borrower’s balance widens every month.

The fixed borrower? They’re locked in. They’re watching variable borrowers pull ahead and they can’t adjust without breaking their mortgage and paying a penalty — which, on a fixed rate, can be significant.

The Gamble vs. The Strategy

This is the distinction I want every borrower to understand.

Choosing variable because you think rates will stay low — that’s a gamble. You might win, you might not. And if you’re just using the savings to pad your cash flow, you’re gambling for lifestyle purposes, not financial gain.

Choosing variable and setting your payment at the fixed rate — that’s a strategy. You’re using the rate differential as a tool to pay down your mortgage faster. If rates stay low, you win. If rates rise, you’re already prepared. The only scenario where you don’t come out ahead is if you need that lower payment just to qualify or keep the lights on — and in that case, you probably shouldn’t be choosing variable at all.

When This Doesn’t Work

I’ll be honest — this strategy requires discipline, and it’s not for everyone.

If you need the lower variable payment to qualify for the mortgage in the first place, you can’t artificially set a higher payment. The math doesn’t work if your budget is already stretched.

It also requires that your lender allows you to increase your payments or make lump-sum prepayments. Most do — but the prepayment privileges vary. Some lenders let you increase by 10–20% annually, others are more restrictive. This is the kind of detail your broker should be walking you through before you sign.

And there’s a psychological component. You need to actually commit to making the higher payment and not dip into the difference when something comes up. If you set the intention but don’t follow through, you’re back to the gamble.

The Bottom Line

The fixed-vs-variable debate doesn’t have to be a coin flip. Variable can be a deliberate, disciplined strategy — not a bet on the Bank of Canada getting it right.

Take the lower rate. Make the higher payment. Let the difference work for you instead of disappearing into your monthly spending. That’s how you turn a rate decision into a wealth-building decision.

If you want to see what this looks like on your actual numbers, reach out. I’ll run both scenarios side by side so you can see exactly how much faster you’d pay down your mortgage — and whether variable makes sense as a strategy, not just a gamble.

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