Capital gains yield, or CGY, measures how much an investment’s price rose or fell relative to its beginning price. It isolates price appreciation or depreciation. It does not include dividends or other cash income, and it is not the same thing as capital gains tax.
CGY = [(Ending Price – Beginning Price) ÷ Beginning Price] × 100
If an investment rises from $80 to $92, its capital gains yield is 15%.
On This Page
- Capital Gains Yield Calculator
- What Capital Gains Yield Means
- How to Calculate Capital Gains Yield
- Capital Gains Yield vs. Total Return
- Capital Gains Yield Is Not Capital Gains Tax
- Capital Gains Yield vs. ROI
- How to Interpret Capital Gains Yield Correctly
- What Capital Gains Yield Cannot Tell You
- Capital Gains Yield FAQs
- Bottom Line
- How I Verified This Guide
Capital Gains Yield Calculator
Use the calculator to measure the percentage change in price between the beginning and ending value of an investment. A positive result means price appreciation. A negative result means price depreciation.
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Important: This is an investment-return calculation, not a capital gains tax calculator. If you are trying to estimate taxable gain or tax owed, your adjusted tax basis, holding period, sale proceeds, and tax rules matter. I cover that separately in my capital gains tax guide.
What Capital Gains Yield Means
Capital gains yield is the percentage price return on an investment over a measured period. If you buy an asset for $80 and its price later rises to $92, the dollar gain is $12. CGY converts that $12 gain into a percentage of the starting value:
($92 – $80) ÷ $80 × 100 = 15%
That percentage makes price changes easier to compare across investments of different sizes. A $12 gain on an $80 investment means something very different from a $12 gain on an $800 investment.
One mistake I saw repeatedly in financial conversations was treating one return number as if it answered every question. It does not. Price return, income, taxes, fees, risk, and time each answer a different question. CGY is useful because it deliberately answers only one of them.
How to Calculate Capital Gains Yield
- Find the beginning price or value.
- Find the ending price or value.
- Subtract the beginning value from the ending value.
- Divide that change by the beginning value.
- Multiply by 100 to convert the result to a percentage.
Positive CGY Example
You buy a stock at $50 and measure it later at $60.
($60 – $50) ÷ $50 × 100 = 20%
The stock’s capital gains yield over that holding period is 20%.
Can Capital Gains Yield Be Negative?
Yes. If an investment falls from $100 to $85:
($85 – $100) ÷ $100 × 100 = -15%
The negative sign matters. It shows price depreciation rather than appreciation.
Capital Gains Yield vs. Total Return
Capital gains yield measures only the price-change portion of an investment’s return. FINRA’s explanation of return and rate of return distinguishes the gain or loss in value from investment earnings such as dividends. Total return includes both.
| Measure | What it includes | Best use |
|---|---|---|
| Capital gains yield | Price appreciation or depreciation only | Isolate the price-return component |
| Total return | Price change plus investment income such as dividends | Evaluate the broader investment result |
Suppose a stock rises from $80 to $92 and pays $2 in dividends during the same period. Its CGY is 15%. A simplified pre-fee total return using those numbers is 17.5%, because total return includes the $12 price gain plus the $2 of income.
Capital Gains Yield Is Not Capital Gains Tax
This distinction causes a surprising amount of confusion. CGY is a performance measurement. Capital gains tax is a tax calculation.
The IRS explains in Topic 409 that a taxable capital gain or loss generally compares the amount realized on a sale with the asset’s adjusted tax basis. Adjusted basis can differ from the simple beginning market price used in a return calculation.
The calculator tells you about price return. It does not know your adjusted basis, holding period, tax bracket, capital-loss carryovers, special asset rules, state taxes, or whether a taxable sale has even occurred.
Capital Gains Yield vs. ROI
CGY asks a narrow question: How much did the asset’s price change relative to where it started? Return on investment can be used more broadly to compare profit or loss with the amount invested and may incorporate additional cash flows or costs depending on the calculation.
If you are trying to measure a broader investment result rather than price appreciation alone, use my ROI calculator and formula guide.
How to Interpret Capital Gains Yield Correctly
- Match the time period. A 15% CGY over six months is not the same experience as 15% over five years.
- Compare the same return type. Do not compare one investment’s CGY with another investment’s total return and call it apples to apples.
- Keep income separate. If dividends or other cash payments are meaningful, CGY alone gives an incomplete picture of the investment result.
- Use consistent values. Beginning and ending prices or values should represent the same investment interest and measurement approach.
A raw CGY is a holding-period price return. It is not automatically an annual return. If the period is not exactly one year, you need a separate annualization step before comparing it with annual returns.
What Capital Gains Yield Cannot Tell You
A high CGY is not automatically good, safe, sustainable, or proof that an asset is undervalued. A low or negative CGY is not automatically a buying signal either.
CGY by itself does not tell you:
- whether you should buy, hold, or sell;
- how much tax you owe;
- whether dividends or other income made the investment attractive;
- whether the return compensated you for the risk taken;
- whether the result beat an appropriate benchmark;
- what fees, trading costs, or inflation did to your real result.
That is the practical value of CGY. It is not a complete investment verdict. It is a clean way to isolate the price-return component so you can combine it with the other information that matters.
The existing Capital Gains Yield worksheet is available if you prefer to keep or compare calculations outside the web calculator.
Capital Gains Yield FAQs
What is capital gains yield?
Capital gains yield is the percentage change in an investment’s price over a measured period. It is calculated from the beginning and ending price and excludes dividends or other investment income.
What is the capital gains yield formula?
CGY = [(Ending Price – Beginning Price) ÷ Beginning Price] × 100.
Does capital gains yield include dividends?
No. CGY isolates the price-change portion of return. Dividends and other investment earnings belong in a broader total-return calculation.
Is capital gains yield the same as capital gains tax?
No. Capital gains yield is an investment-performance metric. Capital gains tax depends on tax basis, sale proceeds, holding period, applicable tax rules, and the investor’s circumstances.
Is capital gains yield an annual return?
Not automatically. Unless the measurement period is one year, the raw CGY is a holding-period price return. A separate annualization calculation is needed for a time-normalized annual return.
What is a good capital gains yield?
There is no universal “good” CGY. The same percentage can mean very different things depending on the holding period, asset type, risk, income distributions, fees, inflation, and benchmark. Compare the number in context rather than using a fixed cutoff.
Bottom Line
Use capital gains yield when you want a clean answer to one question: How much did this investment’s price rise or fall relative to where it started?
Then use total return, taxes, fees, risk, inflation, and the holding period to answer the rest of the investment decision. CGY is useful because it is narrow. Problems start when we ask that narrow number to do a bigger job than it was designed to do.
How I Verified This Guide
I checked the return definitions, tax distinction, current search intent, and the calculator's preserved page role before rebuilding this guide.
