A high-interest savings account (HISA) is a bank account built for parking money: it pays interest on every dollar and lets you withdraw whenever you like. That combination, a real return with no lock-in, is what separates it from both the chequing account beside it and the GIC down the hall.
The trade for that freedom is that the rate isn’t promised. A HISA’s rate is variable, the institution can change it at any time, and the difference between a well-paying HISA and a neglected one is one of the easiest gaps in Canadian banking to close.
Not chequing, and not a GIC
A chequing account is built for movement: deposits in, bills and debits out. It typically pays little or no interest because earning is not its job. A HISA runs the other way. It exists to hold money and pay interest on it, and some accounts limit or charge for transactions to keep it that way.
A GIC sits at the far end. You hand over a fixed sum for a fixed term, the rate is locked for that whole term, and in exchange you generally cannot touch the money until maturity. The choice between the two comes down to one line: a GIC pays a promised rate in exchange for your liquidity, and a HISA gives you the liquidity but keeps the right to change the rate.
| Chequing | HISA | GIC | |
|---|---|---|---|
| Built for | Daily transactions | Holding savings | A fixed sum for a fixed period |
| Interest | Little or none | On every dollar | A rate fixed for the term |
| Rate can change | (Little to change) | Yes, at any time | No, locked until maturity |
| Withdrawals | Anytime | Anytime (transfers can take a day or two) | At maturity (cashable GICs excepted) |
| Suits | Spending money | Undated savings | Money with a date on it |
A variable rate, and how the interest arrives
The number a HISA advertises is a posted rate, and it can move without notice. No maturity date protects it, and no rule requires the institution to announce loudly that it dropped. Rates across the market broadly follow the Bank of Canada’s policy rate, a relationship our Bank of Canada guide walks through, but each institution decides its own timing and its own generosity on the way up and on the way down.
Two habits follow from this. First, the rate you signed up at is not the rate you have; it’s only the rate you had. Institutions know that few people re-read the rate page after opening, and some price accordingly. Second, Promo structures exist: a higher rate for a set number of months, or on new deposits only, after which the account reverts to its regular rate — and when comparing accounts, the regular rate is the one doing the long-term work.
The other half of the mechanics is how the interest lands. Most HISAs calculate interest daily on your closing balance and credit it to the account once a month. Suppose $10,000 sitting at 3%, picking round numbers to keep the math visible: interest accrues at about 82 cents a day, and roughly $25 lands in the account at month-end. The next month’s interest is then calculated on $10,025, which is compounding doing its work.
Two mechanics are worth checking on any specific account: whether interest is paid on every dollar or only on balances above a threshold, and whether the posted rate applies to the whole balance or steps by tier. Neither is a scandal; both change what a headline number is worth to you.
The table below shows the current top of our savings board.
When a HISA is the right tool
A HISA earns its keep wherever the withdrawal date is unknown. An emergency fund is the textbook case, since the entire point of one is being able to reach it tomorrow. The same logic covers money you are holding while you decide, a goal with no fixed timeline, or the float between paydays and bills.
When the date is known, the logic flips. Money you will not touch until a known point can lock in a rate with a term deposit instead of riding a variable one, and the GIC boards show what each term currently pays. Many savers run both: a HISA for the reachable layer, GICs for the dated layer.
A HISA can also live inside a TFSA. The account works the same way; the wrapper means the interest is not taxed. The TFSA board ranks the registered versions separately, because an institution’s registered and unregistered rates are not always the same.
Where to look before you park anything
For identical liquidity, HISA rates differ widely between institutions, which makes this one of the few corners of finance where comparison is most of the work. The current order is on the HISA board, ranked by posted rate across every institution we track. Whichever institution wins, savings deposits at CDIC member institutions are on CDIC’s list of what’s covered. And because variable rates move without notice, a rate alert is the practical defence: name the rate you are hunting for and we will tell you when an institution posts it.
Frequently asked questions
Can a bank lower my HISA rate without telling me?
Yes. HISA rates are variable, and an institution can change its posted rate at any time; the notice is typically a quiet update to the rate page rather than a message to you. Checking the current board occasionally, or setting an alert, covers the gap.
Is a HISA better than a GIC for an emergency fund?
An emergency fund needs to be reachable immediately, which is the one thing a non-cashable GIC cannot offer. A HISA keeps the money available on a day’s notice while it earns. For money with a known date, the comparison changes, because a GIC’s locked rate becomes the advantage.
How often does a HISA pay interest?
Most accounts calculate interest daily on the closing balance and credit it monthly, and the credited interest then earns interest itself in the months that follow. Specific accounts vary, so check the calculation method in the account terms.
Can I hold a HISA inside my TFSA?
Yes. Most institutions offer a TFSA savings account that works like a regular HISA inside the registered wrapper, with the interest sheltered from tax interest earned inside a TFSA is tax-free. The registered and unregistered versions of an account don’t always pay the same rate, so compare both before choosing.