Return on Investment (ROI) measures the gain or loss from an investment relative to its cost. In a Canadian context, ROI is used to evaluate the performance of stocks, real estate, business investments, GICs, and other assets. The basic ROI calculation is straightforward, but meaningful investment analysis also accounts for time (annualized ROI), tax implications, inflation, and transaction costs.
Quick Answer
ROI = (Net Gain / Cost of Investment) x 100%. If you bought $10,000 of TSX ETF units and sold them for $14,500 five years later, your total ROI is ($4,500 / $10,000) x 100% = 45%. The annualized ROI (Compound Annual Growth Rate or CAGR) is (1 + 0.45)^(1/5) – 1 = 7.7% per year.
ROI vs CAGR
Simple ROI: The total percentage gain over the full holding period, regardless of time.
CAGR (Compound Annual Growth Rate): The equivalent annual return that would produce the same total gain over the holding period. CAGR = (Ending Value / Beginning Value)^(1/years) – 1.
CAGR is the more useful metric for comparing investments held over different time periods. A 100% total ROI looks impressive, but if it took 20 years, the CAGR is only 3.53% per year.
After-Tax ROI in Canada
Pre-tax ROI overstates the true return for non-registered investments. The tax treatment of different types of Canadian investment returns:
– Interest income: Taxed at full marginal rate (e.g., 43.41% in Ontario at $100K income)
– Canadian eligible dividends: Taxed at dividend effective rate (e.g., 8.33% in Ontario at $100K)
– Capital gains: 50% inclusion rate — effectively taxed at half your marginal rate (e.g., 21.71% in Ontario at $100K income)
A GIC returning 4.5% interest in a non-registered account has a true after-tax return of 4.5% x (1 – 0.43) = 2.57% for a 43% marginal rate investor. A dividend ETF returning 4.5% in eligible dividends may have an effective after-tax return of 4.5% x (1 – 0.0833) = 4.12% — more than 1.5x the after-tax return from interest income.
Real Estate ROI
For investment properties in Canada, ROI calculation includes:
– Net rental income (rent minus mortgage interest, property tax, insurance, maintenance, management)
– Appreciation in property value
– Capital gains tax on sale (50% inclusion at marginal rate; principal residence exemption does not apply to pure investment properties)
– Transaction costs on entry and exit (PTT, legal fees on purchase; realtor commission on sale)
Total ROI = (Rental income gained + Capital appreciation – All costs – Taxes) / Initial equity invested.
Verified Against Source
ROI and CAGR are standard financial mathematics concepts. Canadian capital gains inclusion rate of 50% (on most assets as of 2025) is set under ITA section 38. Dividend tax treatment is described under ITA sections 82 and 121. Source: canada.ca/en/revenue-agency/services/tax/individuals/topics/about-your-tax-return/tax-return/completing-a-tax-return/personal-income/line-12700-capital-gains.html
Frequently asked questions
- How do you calculate ROI?
- ROI = (Gain from Investment - Cost of Investment) / Cost of Investment x 100%. Or equivalently: (Ending Value - Beginning Value) / Beginning Value x 100%. For example: buy $10,000 of stock, sell for $13,000, ROI = ($3,000 / $10,000) x 100% = 30%. This is total ROI, not annualized.
What is CAGR and why is it better than simple ROI?
CAGR (Compound Annual Growth Rate) is the annualized equivalent return — it answers 'what constant annual return would have produced this total gain?' CAGR = (Ending Value / Beginning Value)^(1/years) - 1. CAGR allows fair comparison between investments held over different time periods. Simple ROI does not account for time: a 100% return is excellent over 1 year but mediocre over 20 years.
What is a good ROI in Canada?
Context-dependent. For a long-term equity portfolio, a CAGR of 6-9% historically represents good performance. The TSX Composite Index has returned approximately 7-8% per year over long periods. GICs at 4.5% are lower but risk-free. Real estate ROI varies by market but has averaged 5-10% CAGR (including appreciation and rental income) in major Canadian cities over the past 20 years.
How does tax affect ROI in Canada?
Tax significantly reduces after-tax ROI for non-registered investments. Interest income is taxed at your full marginal rate (43% in Ontario at $100K). Capital gains are taxed at 50% of your marginal rate (effectively ~21%). Eligible dividends are taxed at effective dividend rates (~8% at $100K in Ontario). Investments inside a TFSA or RRSP avoid all annual tax, maximizing after-tax ROI.
How do you calculate ROI on a rental property in Canada?
Calculate net operating income (gross rent minus vacancy, property tax, insurance, maintenance, management fees). Divide by the equity invested (purchase price minus mortgage). Also account for appreciation and transaction costs. True ROI = (Total income earned + Capital gain on sale - Taxes - Transaction costs) / Total equity deployed over the holding period.
Is there a difference between ROI and return?
ROI specifically compares gain to the original investment cost. Return (or total return) typically includes both income (dividends, interest, rent) and capital appreciation. Rate of return is usually annualized. ROI can be calculated over any period without annualizing. Investment professionals often prefer IRR (Internal Rate of Return) for multi-period cash flow analysis.
How do investment fees affect ROI?
Fees reduce net ROI directly. A mutual fund with a 2% MER earning 8% gross returns only 6% net. Over 25 years, a $100,000 investment at 8% grows to $685,000; at 6% (after fees), it grows to $429,000 — a $256,000 difference entirely attributable to fees. Low-cost ETFs (MERs of 0.05%-0.25%) dramatically improve long-term ROI versus high-MER funds.
What is the capital gains inclusion rate in Canada for 2025?
For most assets in 2025, the capital gains inclusion rate is 50% — meaning 50% of the gain is added to income and taxed at your marginal rate. At a 43% marginal rate, the effective capital gains tax rate is 21.5%. The federal budget proposed a 67% inclusion rate for gains above $250,000 for individuals in 2024, but this remains subject to legislative uncertainty — verify current rules before reporting.
Does ROI account for inflation?
Simple ROI uses nominal values (not adjusted for inflation). A 5% ROI in a year with 3% inflation represents only a 2% real ROI. For long-term planning, use the real ROI: real ROI = (1 + nominal ROI) / (1 + inflation) - 1. The Bank of Canada targets 2% inflation — subtract this from nominal return assumptions for long-term real purchasing power calculations.
How does RRSP affect ROI?
RRSP contributions generate a tax deduction in the year of contribution (reducing tax by your marginal rate), and investments grow tax-deferred until withdrawal. This effectively increases your initial investment via the tax refund. An RRSP investor who contributes $10,000 and receives a $4,300 tax refund (43% marginal rate) has effectively invested $10,000 while only costing $5,700 net — the gross ROI is measured on $10,000 but the net cost basis is $5,700.
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