A savings account interest calculator shows you exactly how much your money will grow based on your initial deposit, regular contributions, interest rate, and compounding frequency. Whether you are building an emergency fund, saving for a goal, or comparing bank products, this tool projects your balance and total interest earned year by year.
How this savings account interest calculator works
Enter your initial balance, monthly deposit amount, annual interest rate, compounding frequency, and time period. The calculator shows your future balance, total deposits, total interest earned, effective annual rate, and a year-by-year growth table.
Compounding options:
- Daily — Interest calculated every day (365 periods/year)
- Monthly — Interest calculated once per month (12 periods/year)
- Quarterly — Interest calculated every 3 months (4 periods/year)
- Semi-annually — Interest calculated twice per year
- Annually — Interest calculated once per year
How compound interest works
Compound interest is often called the “eighth wonder of the world” because it makes your money grow exponentially. Here is how it works:
Year 1: You earn interest on your original deposit Year 2: You earn interest on your deposit plus the interest from Year 1 Year 3: You earn interest on your deposit plus all accumulated interest
This compounding effect accelerates over time, which is why even a small difference in interest rates matters significantly over 10, 20, or 30 years.
Compounding frequency comparison
$10,000 at 4.00% for 10 years, no additional deposits:
| Compounding | Balance After 10 Years | Total Interest | Effective Rate |
|---|---|---|---|
| Daily | $14,918 | $4,918 | 4.081% |
| Monthly | $14,908 | $4,908 | 4.074% |
| Quarterly | $14,889 | $4,889 | 4.060% |
| Semi-Annually | $14,859 | $4,859 | 4.040% |
| Annually | $14,802 | $4,802 | 4.000% |
The difference between daily and annual compounding on $10,000 over 10 years is only $116 — further proof that rate matters more than frequency.
The power of regular deposits
Regular deposits make a much bigger difference than compounding frequency:
$5,000 initial deposit at 4.00%, monthly compounding:
| Monthly Deposit | Balance After 5 Years | Total Interest |
|---|---|---|
| $0 | $6,104 | $1,104 |
| $100 | $12,803 | $1,703 |
| $200 | $19,502 | $2,302 |
| $500 | $39,598 | $4,098 |
Adding just $200/month more than triples your balance and doubles your interest earned.
Savings account rates in Canada (2026)
| Account Type | Typical Rate | Notes |
|---|---|---|
| Big Five bank savings | 0.01–1.50% | Often near zero for basic accounts |
| Big Five HISA | 1.50–3.00% | Higher minimum balance required |
| Online bank HISA | 3.50–4.50% | Best everyday rates |
| Credit union savings | 2.50–4.50% | Provincial deposit insurance |
| Promotional rate | 4.50–6.00% | Temporary (3-6 months) |
The difference between a Big Five bank savings account (0.50%) and an online HISA (4.00%) is enormous. On $20,000, that is $100/year vs $800/year in interest.
Beating inflation with savings
For your savings to actually grow in real terms, the interest rate must exceed the inflation rate. With Canadian inflation averaging 2-3% in recent years:
| Savings Rate | Inflation | Real Return | $10,000 After 5 Years (real) |
|---|---|---|---|
| 1.00% | 2.50% | -1.50% | $9,272 |
| 3.00% | 2.50% | +0.50% | $10,253 |
| 4.00% | 2.50% | +1.50% | $10,773 |
| 5.00% | 2.50% | +2.50% | $11,314 |
At a 1% savings rate with 2.5% inflation, you are actually losing purchasing power. Use our inflation calculator to see how inflation erodes your savings over time.
How to maximize savings account interest in Canada
1. Use a HISA, not a standard savings account Big Six bank standard savings accounts pay 0.01–0.05% — effectively zero. Online HISAs (EQ Bank, Oaken Financial, WealthSimple Cash) consistently pay 3.0–4.0% on the same money.
2. Hold your HISA inside a TFSA HISA interest is fully taxable in non-registered accounts. Holding your emergency fund or savings in a TFSA HISA means you keep 100% of the interest, regardless of your tax bracket.
3. Compare promotional rates carefully Some banks offer high promotional rates (e.g., 4.5% for 5 months) then revert to a much lower standard rate. Calculate the blended return over a full year before committing. A consistent 3.75% standard rate is often better than 5% for 3 months followed by 1.5%.
4. Consider a GIC for non-liquid savings If you don’’t need the money for 1–5 years, a GIC typically offers 0.20–0.50% more than a HISA, with no withdrawal flexibility. Match the GIC term to your actual time horizon.
Savings rate benchmarks (April 2026)
| Product | Typical rate range | Liquidity |
|---|---|---|
| Big Six standard savings | 0.01–0.20% | Immediate |
| Online HISA (base rate) | 3.25–4.00% | Immediate |
| Promotional HISA | 4.00–5.00% (limited period) | Immediate |
| 1-year GIC | 3.75–4.25% | Locked |
| 5-year GIC | 3.90–4.30% | Locked |
| CBDC (Bank of Canada rate) | ~2.75% | N/A |
Frequently asked questions
How much interest will $50,000 earn in a HISA? At 3.75%, $50,000 earns approximately $1,875 in one year (before tax). Inside a TFSA, this is fully tax-free. In a non-registered account at a 40% marginal rate, you keep approximately $1,125 after tax.
Should I keep my emergency fund in a HISA or GIC? Always keep emergency funds in a HISA — the defining characteristic of an emergency fund is immediate liquidity. A cashable GIC is the only GIC type suitable for emergency savings, and even then it may have restrictions on early redemption. Don’’t lock up money you might need urgently.
Related calculators
- HISA Calculator — Compare TFSA vs non-registered HISA returns
- Compound Interest Calculator — Calculate compound interest on any investment
- Simple Interest Calculator — Calculate basic simple interest
- GIC Calculator — Compare GIC rates and returns
- Savings Goal Calculator — Calculate how long to reach a savings target
- Emergency Fund Calculator — Determine your emergency fund needs
- Inflation Calculator — See how inflation affects your savings
- Savings Hub: Best HISAs, GICs & Savings Accounts in Canada