Capital Gains Yield Calculator - Investment Return

The capital gains yield calculator measures price appreciation or loss as a percentage of the original purchase price. Investors use capital gains yield to separate market price movement from dividend income, coupon income, or other distributions. The inputs are intentionally simple: purchase price, current price, number of shares, and dividends per share for a separate total-return comparison. The primary formula is: capital gains yield = (current price - purchase price) / purchase price x 100. The calculator also multiplies the per-share gain by the number of shares to show dollar capital gain, then adds dividends per share to show total return with dividends. This distinction matters because a stock with modest price appreciation and a high dividend can have a very different total return than a growth stock with no dividend. Use the calculator to review portfolio positions, compare unrealized gains across holdings, or explain why a position is up in dollars but not necessarily attractive on a percentage basis. It is also useful for what-if analysis: changing the current price immediately shows how much appreciation is needed to reach a target gain or recover from a drawdown. The share count affects dollar gain, but not the capital gains yield percentage, because yield is measured per dollar invested. The calculator does not include taxes, commissions, foreign-exchange changes, dividend reinvestment, splits, or time-weighted annualization. A 20% gain over one month and a 20% gain over five years have the same capital gains yield but very different annualized performance. For performance reporting, pair this result with holding period, cash flows, and a tax estimate. For best results, keep all inputs on the same time basis and currency basis, then save the assumptions beside the output. That practice makes the estimate easier to audit later and prevents a common spreadsheet error: mixing monthly values with annual values or combining before-tax and after-tax figures. Re-run the scenario with conservative and optimistic assumptions before using the result in a budget, filing decision, trade review, or transaction memo.