Compound Interest Calculator Canada
See how your money grows over time with the power of compound interest. Compare daily, monthly, and annual compounding to maximize your returns.
Compounding Frequency Comparison
Year-by-Year Breakdown
| Year | Contributions | Interest | Total Balance |
|---|
Understanding Compound Interest in Canada
Compound interest is often called the "eighth wonder of the world" for good reason. Unlike simple interest, which only earns interest on your original principal, compound interest earns interest on both your principal and previously accumulated interest. This snowball effect can dramatically accelerate wealth building over time, making it one of the most powerful tools for Canadian investors.
This compound interest calculator helps you visualize how your investments will grow in registered accounts like RRSPs and TFSAs, as well as non-registered investments and GICs. Understanding compounding is essential for retirement planning, saving for a home, or building long-term wealth.
The Compound Interest Formula
The mathematical formula for compound interest is:
A = P(1 + r/n)nt
Where:
- A = Final amount (future value)
- P = Principal (initial investment)
- r = Annual interest rate (as decimal)
- n = Number of times interest compounds per year
- t = Number of years
How Compounding Frequency Affects Returns
The more frequently interest compounds, the more you earn. Here's how different compounding frequencies compare for a $10,000 investment at 7% over 20 years (no additional contributions):
| Compounding | Times/Year | Future Value | Interest Earned |
|---|---|---|---|
| Annually | 1 | $38,697 | $28,697 |
| Semi-Annually | 2 | $39,343 | $29,343 |
| Quarterly | 4 | $39,680 | $29,680 |
| Monthly | 12 | $40,024 | $30,024 |
| Daily | 365 | $40,552 | $30,552 |
| Continuous | ∞ | $40,552 | $30,552 |
The Rule of 72
The Rule of 72 is a quick way to estimate how long it takes to double your money. Simply divide 72 by your interest rate:
| Interest Rate | Years to Double | Actual (Annual) |
|---|---|---|
| 3% | 24.0 years | 23.4 years |
| 5% | 14.4 years | 14.2 years |
| 7% | 10.3 years | 10.2 years |
| 10% | 7.2 years | 7.3 years |
| 12% | 6.0 years | 6.1 years |
Compound Interest in Canadian Investment Accounts
Different Canadian investment accounts offer varying tax treatment of compound interest:
| Account Type | Tax on Growth | Tax on Withdrawal | 2026 Limit |
|---|---|---|---|
| TFSA | Tax-free | Tax-free | $7,000/year |
| RRSP | Tax-deferred | Fully taxable | $33,810 or 18% |
| FHSA | Tax-free | Tax-free (home) | $8,000/year |
| RESP | Tax-deferred | Taxed to student | $50,000 lifetime |
| Non-Registered | Annually taxable | Capital gains tax | Unlimited |
| GIC | Annually taxable* | No additional tax | Unlimited |
*Unless held in registered account (TFSA, RRSP, etc.)
Historical Returns for Canadian Investors
When planning your investments, it helps to understand historical average returns:
| Investment Type | Historical Avg. Return | Risk Level |
|---|---|---|
| High-Interest Savings | 2-4% | Very Low |
| GICs (1-5 year) | 3-5% | Very Low |
| Canadian Bonds | 4-6% | Low |
| Balanced Portfolio (60/40) | 6-7% | Medium |
| Canadian Stocks (TSX) | 7-9% | High |
| Global Stocks | 8-10% | High |
The Impact of Starting Early
Time is the most powerful factor in compound interest. Consider two investors, both investing $500/month at 7% return:
- Investor A starts at age 25 and invests until 65 (40 years): Final value = $1,197,811
- Investor B starts at age 35 and invests until 65 (30 years): Final value = $566,765
By starting just 10 years earlier, Investor A accumulates more than double the wealth, despite only contributing $60,000 more ($240,000 vs $180,000). The extra $631,046 came from compound interest on those additional early years.