Turn your mortgage into a wealth-building tool. Smith Manoeuvre strategies, tax-smart planning, and honest math from two Canadian mortgage strategists.
GICs or High-Interest Savings: The Break-Even Math as the Bank of Canada Turns Hawkish
A savings account advertising 5% for three months looks better than a 4% GIC. That 5% only describes one quarter of your year, and what the account pays afterward is the number that decides how much you actually earn. Below is a side-by-side that puts both offers on the same footing, plus one simple threshold that tells you which one wins.
Think about the money in question. Maybe a mortgage renewal is coming up in the spring, or a property tax instalment, or a corporate tax payment. You want that cash earning something decent. You also want to be able to reach it the day it's due. The way through is to compare what each option earns over the same stretch of time, and to lock away only the cash you can leave untouched for that full stretch.
What your savings account must earn to beat a one-year GIC
The two products work differently. A non-redeemable GIC fixes your rate for the term, and you can't withdraw before maturity. Some GICs are redeemable, usually at a lower rate. A high-interest savings account pays a variable rate. The bank can change it at any time, and a promotional rate ends on a set date and drops to the ordinary posted rate.
Here's a hypothetical example. You have $50,000. A one-year GIC pays 4%, which is $2,000 over the year. A savings account pays an annualized 5% for three months. Because that 5% is a yearly rate applied to only three months, it earns about $625 ($50,000 × 5% × 3/12). To match the GIC, the account has to earn the remaining $1,375 over nine months. That works out to an average of about 3.67%.
With the example numbers, that's (4 × 12 − 5 × 3) ÷ 9 = 3.67%. This is simple interest on an unchanged balance with no fees. Daily interest and compounding will shift the exact figure slightly. The result is a threshold, and you don't have to forecast rates to use it. Ask yourself whether you'd bet on the account averaging above it once the promotion ends.
Before you trust the inputs, check four things:
Who qualifies. Promotions are often limited to new clients or new deposits.
When the promotion expires.
The ordinary rate you'll earn after it ends.
The GIC's redemption terms.
Also compare like with like: the same principal, the same period and the same account type. A TFSA offer measured against a non-registered offer can make one look like the winner when it's really the tax treatment doing the work.
What access to your cash costs in dollars
Now say the savings rate drops to 3% after the promotion. The nine months earn about $1,125, for roughly $1,750 in total, against $2,000 in the GIC. In that scenario, keeping your money reachable cost you about $250 for the year.
That's a dollar figure you can weigh. If your renewal or tax bill lands before the GIC matures, $250 is a modest price for never having to scramble. If the money has no job for 12 months, it's $250 you didn't need to give up.
Bank of Canada decisions and bond yields influence what banks offer on both products, often with a delay. They don't promise which direction your account's rate will move next, and each bank sets its own rates. Splitting the money handles that uncertainty better than a guess does.
Suppose $20,000 of that $50,000 is set aside for a tax bill and renewal costs over the coming months. Keep that part in savings. Put the other $30,000 in the GIC. Under the same hypothetical rates, the gap on the locked portion is about $150 ($1,200 versus $1,050), and you never need to break anything early to cover the bill.
The highest advertised rate is only one part of the decision. The best home for your cash is the one that earns enough without getting in the way of what the cash is for. Write down the next date you'll need this money, put it beside your two actual offers, and run the threshold.
If that date is a mortgage renewal, I'm glad to talk through how your cash plan fits with your renewal options. It's an easy conversation to have before the date arrives.
A savings account advertising 5% for three months looks better than a 4% GIC. That 5% only describes one quarter of your year, and what the account pays afterward is the number that decides how much you actually earn. Below is a side-by-side that puts both offers on the same footing, plus one simple threshold that tells you which one wins.
Think about the money in question. Maybe a mortgage renewal is coming up in the spring, or a property tax instalment, or a corporate tax payment. You want that cash earning something decent. You also want to be able to reach it the day it's due. The way through is to compare what each option earns over the same stretch of time, and to lock away only the cash you can leave untouched for that full stretch.
What your savings account must earn to beat a one-year GIC
The two products work differently. A non-redeemable GIC fixes your rate for the term, and you can't withdraw before maturity. Some GICs are redeemable, usually at a lower rate. A high-interest savings account pays a variable rate. The bank can change it at any time, and a promotional rate ends on a set date and drops to the ordinary posted rate.
Here's a hypothetical example. You have $50,000. A one-year GIC pays 4%, which is $2,000 over the year. A savings account pays an annualized 5% for three months. Because that 5% is a yearly rate applied to only three months, it earns about $625 ($50,000 × 5% × 3/12). To match the GIC, the account has to earn the remaining $1,375 over nine months. That works out to an average of about 3.67%.
You can run this with any two offers:
(GIC rate × total months − promo rate × promo months) ÷ remaining months
With the example numbers, that's (4 × 12 − 5 × 3) ÷ 9 = 3.67%. This is simple interest on an unchanged balance with no fees. Daily interest and compounding will shift the exact figure slightly. The result is a threshold, and you don't have to forecast rates to use it. Ask yourself whether you'd bet on the account averaging above it once the promotion ends.
Before you trust the inputs, check four things:
Also compare like with like: the same principal, the same period and the same account type. A TFSA offer measured against a non-registered offer can make one look like the winner when it's really the tax treatment doing the work.
What access to your cash costs in dollars
Now say the savings rate drops to 3% after the promotion. The nine months earn about $1,125, for roughly $1,750 in total, against $2,000 in the GIC. In that scenario, keeping your money reachable cost you about $250 for the year.
That's a dollar figure you can weigh. If your renewal or tax bill lands before the GIC matures, $250 is a modest price for never having to scramble. If the money has no job for 12 months, it's $250 you didn't need to give up.
Bank of Canada decisions and bond yields influence what banks offer on both products, often with a delay. They don't promise which direction your account's rate will move next, and each bank sets its own rates. Splitting the money handles that uncertainty better than a guess does.
Suppose $20,000 of that $50,000 is set aside for a tax bill and renewal costs over the coming months. Keep that part in savings. Put the other $30,000 in the GIC. Under the same hypothetical rates, the gap on the locked portion is about $150 ($1,200 versus $1,050), and you never need to break anything early to cover the bill.
The highest advertised rate is only one part of the decision. The best home for your cash is the one that earns enough without getting in the way of what the cash is for. Write down the next date you'll need this money, put it beside your two actual offers, and run the threshold.
If that date is a mortgage renewal, I'm glad to talk through how your cash plan fits with your renewal options. It's an easy conversation to have before the date arrives.
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