Emergency fund calculator

The convention is 3–6 months of essential expenses, scaled to how fragile your income is: about 3 months for a household with two stable incomes, 6 for a single income, and up to 9 if you’re self-employed or your income swings. Count essential spending only — housing, food, utilities, insurance, minimum debt payments — not your full lifestyle budget, which typically shrinks the target by a quarter or more.

Somewhere liquid, insured, and earning — which means a high-interest savings account, full stop. The best everyday rate we track is 2.85% (Saven Financial, as of June 13, 2026); a big-bank savings account near 0% costs a $20,000 fund about $570 a year in forgone interest. Hold it in a TFSA if you have spare room so the interest is tax-free. Not GICs (locked when you need it), not investments (might be down 30% the month the furnace dies), and not chequing (earns nothing and gets spent).

The test: unexpected, necessary, and time-sensitive. Job loss, a major repair, an urgent trip, a health cost your coverage misses — yes. A sale, a vacation, Christmas, your property-tax bill — no; those are predictable and belong in a savings goal, not the emergency fund. The discipline matters because a fund that quietly leaks into known expenses won’t be there for the unknown one.

It’s a backstop, not a replacement. A HELOC or LOC provides liquidity — but it can be frozen or reduced exactly when broad conditions get bad (which is often when your emergency happens), and borrowing at prime-plus during a crisis adds a payment to a budget that just lost income. A reasonable hybrid for disciplined borrowers: a smaller cash fund (say 3 months) plus an open LOC for the tail risk. Pure-LOC plans fail at the worst possible moment.

Not really — retirees face a different risk. Your “income” doesn’t get fired; the danger is a market downturn forcing you to sell investments to fund withdrawals. So the cushion is sized in years of your income gap (spending minus CPP/OAS/pension), typically 1–3 years, structured across chequing, HISA and a GIC ladder. That’s a different calculator’s job: see our retiree cash strategy guide.

There’s a real trade-off, and pretending otherwise sells the fund badly. Cash above your genuine need earns HISA rates instead of market returns — on $20,000 of excess, maybe a few hundred dollars a year of difference. What the fund buys: never selling investments at a loss, never carrying 21% credit-card debt through a crisis, and the measurable psychological room to take better decisions (including staying invested in a crash). Right-size it with the calculator, put the excess to work — and stop optimizing the insurance.