Investing
Compound Interest Calculator Canada
Project Canadian investment growth using A=P(1+r/n)^(nt) with monthly or annual compounding.
Updated May 26, 2026
MoneyMapCanada Editorial Team
Editorial review and fact-check team
The MoneyMapCanada Editorial Team reviews every article and calculator for factual accuracy, source integrity, and consistency with current Canadian government guidance. Each piece is cross-checked against CRA publications, FCAC consumer guidance, CMHC rules, or CDIC coverage definitions before publication. The team also monitors for rate and rule changes and flags outdated content for revision.
Growth assumptions
Projected future value
$19,122
Using A=P(1+r/n)^(nt), compounded monthly.
Future value
$19,122
Starting balance
$10,000
Contributions
$70,000
Projected growth
$0
Investment growth chart
$103,323
$0
Contributions vs growth
Future value breakdown
$70,000
$0
Growth progress
$19,122 of $70,000
How much of the future value comes from compounding.
Assumptions used
| Starting balance | $10,000 |
|---|---|
| Monthly contribution | $500 |
| Return | 6.5% |
| Years | 10 |
What if scenarios
Return at 7.5% (+1%)
$110,086
$90,964 more projected
+$200/mo contribution
$137,004
$117,882 more projected
15 years (+5 years)
$178,214
Five extra years of compounding
At 7% (market average)
$106,639
Using a long-run market return estimate
Real-world context
Rule of 72: At 6.5%, money doubles every ~11 years. Over 10 years you get roughly 0 doublings.
Compounding share: 0% of your projected value comes from investment growth rather than money you contributed.
TFSA annual limit: The 2026 TFSA annual contribution limit is $7,000. Regular TFSA contributions are a tax-free way to capture this growth.
How this calculator works↓
| Formula | FV = PV(1 + r/12)^(12n) + PMT × [(1 + r/12)^(12n) − 1] / (r/12) |
|---|---|
| Compounding | Monthly compounding applied to both starting balance and ongoing contributions |
| Return | Nominal annual return — does not account for inflation or taxes on gains outside a registered account |
| Note | Projections are estimates. Actual returns vary with market conditions. |
This calculator is best for
- ✓Canadians projecting TFSA, RRSP, or non-registered investment growth
- ✓Anyone visualizing the long-term impact of consistent contributions
- ✓Financial planning conversations about savings targets
Not suitable for
- ✕Guaranteed investment products (GICs, bonds) — returns are fixed, not compounded monthly
- ✕Tax-optimized modelling — consult an advisor for after-tax projections
- ✕Exact TFSA/RRSP contribution room calculations — use CRA My Account
Related guides and tools
Note: This calculator is designed to be conservative and may show slightly higher costs or lower returns than promotional tools. Use it for planning purposes only — not as a commitment from any lender or institution.
Calculator method
How to use this result before making a decision
Run a conservative scenario first, then test a best-case and stress-case version. A calculator is most useful when it shows whether the decision survives higher costs, slower payoff, lower returns, or a tighter monthly budget.
Methodology and limits
- Inputs are educational estimates and may use simplified formulas or rounded assumptions.
- Actual results can change because of tax rules, lender terms, fees, timing, compounding, province, credit profile, or provider eligibility.
- Use the output as a planning checkpoint, then confirm final numbers with official sources, your financial institution, employer, insurer, lender, or a qualified professional.
What is compound interest and how does it work?
Compound interest means your earnings generate additional earnings each compounding period. Unlike simple interest (applied only to principal), compound interest applies to both the original amount and accumulated gains. A $10,000 investment at 7% compounded annually becomes $19,671 after 10 years — versus $17,000 with simple interest.
How do I use a compound interest calculator for Canada?
This Canadian compound interest calculator applies the formula A = P(1+r/n)^(nt). Enter your starting balance and annual return rate — the tool projects your future balance using monthly compounding. Canadian bank accounts, GICs, and most investments compound monthly, making this the most accurate model for Canadian savings.
What is the compound interest formula?
The compound interest formula is: A = P(1 + r/n)^(nt), where P is principal, r is annual interest rate, n is compounding periods per year (12 for monthly), and t is years. For a $5,000 investment at 5% compounded monthly over 10 years: A = $5,000 × (1 + 0.05/12)^(120) = $8,235.
How does compound interest work on a loan or mortgage in Canada?
Canadian mortgages compound semi-annually by law. Personal loans and credit cards compound monthly. On a $20,000 loan at 7% compounded monthly, the effective annual rate is 7.23% — slightly higher than the stated rate. The longer the term, the larger the compounding effect on total interest paid.
What is the difference between compound and simple interest?
Simple interest: Interest = P × r × t. Compound interest: A = P(1+r/n)^(nt). On $10,000 at 5% for 5 years: simple interest returns $12,500 total; monthly compounding returns $12,834. The difference is modest at 5 years but grows dramatically — at 20 years: $20,000 simple vs $27,126 compounded monthly.
Sources used
Official references checked for this page
Updated May 26, 2026
Each claim on this page is traceable to one of the government authorities or regulators below. Rates, tax rules, eligibility requirements, and product terms can change — verify current details directly with the linked source before making any financial decision.
Keep researching
All calculators
Browse every planning tool before choosing a financial product or strategy.
FHSA vs RRSP Canada 2026: Which Is Better for Saving to Buy a Home?
FHSA gives a tax deduction AND tax-free withdrawal with no repayment required. RRSP HBP forces 15-year repayment. Compare limits, rules, and the right order to use both in 2026.
Investing App Comparison
Compare fees, portfolios, account types, and investor tools.
Investing guides
More investing articles and planning resources.