High-Interest Savings Account (HISA)

The parking spot for money you cannot afford to risk

Some money should never be invested: the emergency fund, the house down payment due next spring, the tax bill coming in April. A HISA is built for exactly that job. Your balance never drops with the stock market, you can withdraw at any time without penalty, and interest accrues daily and compounds, a small but real dose of compound interest while the money waits.

The trade-off is that even a good HISA rate tends to hover near inflation, so a HISA preserves money rather than grows it. That is fine. Growth is the job of your investments; the HISA's job is being there, in full, the day you need it.

Where the good rates live

The gap between institutions is enormous. Big-bank "savings" accounts often pay close to nothing, while online banks and credit unions typically pay several times more on the identical deposit (as of July 2026). The high-rate players can do this because they run no branch networks and use attractive deposits as their growth engine. Moving an emergency fund from a big-bank account to an online HISA is often the highest-paid ten minutes in personal finance.

Beware teaser rates. Many institutions advertise a fat promotional rate that quietly expires after a few months and collapses to a much lower base rate. A promo can be worth grabbing, but judge an account by its ongoing rate, mark the expiry date, and be ready to move again. Rate-chasing between promos is legal, free and, for large balances, lucrative.

HISA rates are not fixed. They float with the Bank of Canada policy rate: when the central bank cuts, HISA rates follow within weeks, and when it hikes, the good online banks pass most of it along.

The CDIC angle: is your HISA protected?

Deposit insurance is what makes a HISA truly risk-free, so check it before chasing any rate. Deposits at CDIC member institutions are insured up to $100,000 per depositor, per insured category, per institution (as of July 2026), covering principal and interest if the institution fails.

Most of the familiar online banks are CDIC members, either in their own right or through a parent institution; the CDIC website lists every member, and a high rate from a member is exactly as insured as a low rate from a big bank. Credit union and caisse populaire HISAs are covered by provincial deposit insurers instead, with limits that in several provinces are broader than CDIC's.

If your balance exceeds $100,000, spread it across categories or institutions. Insurance is free; use all of it.

HISA ETFs, cash ETFs and brokerage savings accounts

Inside a brokerage account you cannot open a regular HISA, but two cousins exist. HISA ETFs (also called cash ETFs) are funds that hold deposits at big banks and yield close to the overnight rate minus a small fee. They are convenient and competitive, but understand the differences: they are not CDIC-insured, they trade like stocks (possible commissions and a bid-ask spread), and regulators' liquidity rules for the underlying bank deposits trimmed their yields somewhat in recent years.

The middle ground is the brokerage investment savings account, often called an ISA fund: a savings deposit packaged as a fund you buy through your brokerage. Because your money sits as a deposit at the underlying banks, ISA funds do carry CDIC coverage at those banks, within the usual limits, while remaining holdable next to your ETFs.

Tax: interest is fully taxable

Outside registered accounts, HISA interest is taxed like salary, at your full marginal rate, with no dividend or capital gains break. Your bank reports it on a T5 slip, and interest under $50, for which no slip is issued, is still taxable and must still be reported.

The clean fix for a long-term emergency fund is holding it inside a TFSA. Most online banks offer TFSA versions of their HISAs at the same rate, and inside the TFSA every dollar of interest is tax-free. Just remember TFSA room rules if you withdraw and re-deposit in the same year.

HISA vs GIC

A GIC usually pays more than a HISA because you agree to lock the money up for a set term. The split is simple: money with no date attached, like an emergency fund, belongs in a HISA, since a locked GIC defeats the purpose. Money with a known date, like a down payment in two years, can earn more in GICs, ideally laddered so pieces mature along the way.