Investing
Investment Loss Recovery Calculator
Losses and gains aren't symmetric: a 50% drop needs a 100% rise to get back to even, because the gain works off a smaller base. Enter your loss to see the gain required to recover — and, if you like, the dollars involved.
Formula shown below · Tested against worked examplesHow we verify
To see the dollar value at the bottom and the gain needed.
Gain needed to break even: 42.86%
Gain needed to break even
42.86%
A 30% loss requires this gain just to get back to even.
- Your loss
- 30%
- Value after the loss
- $7,000
- Amount to recover
- $3,000
The dollars you need to earn back.
Compare scenariosTry three values of one input
| Loss | |||
|---|---|---|---|
| Gain needed to break even | 36.99% | 42.86%+5.87% | 49.25%+12.27% |
| Your loss | 27% | 30%+3% | 33%+6% |
| Value after the loss | $7,300 | $7,000−$300 | $6,700−$600 |
| Amount to recover | $2,700 | $3,000+$300 | $3,300+$600 |
Every other input stays at the value you set above — currently 30% for loss. Differences are measured against the first column.
Saved scenariosSave this calculation
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How this calculator works
Gain needed = 1 ÷ (1 − loss) − 1. The value after the loss is the original amount × (1 − loss), and the amount to recover is the difference between the original and the post-loss value.
Pure arithmetic on a single loss — it doesn't assume any timeframe or return. Whether you can realistically earn back the required gain depends entirely on the investment and how long you can wait.
Formula
Gain needed = 1 ÷ (1 − L) − 1- L
- The loss, as a decimal (0.5 for a 50% fall)
The asymmetry is the whole point: a 50% fall needs a 100% rise, and an 80% fall needs 400%. Losses and gains of the same percentage do not cancel, because each is measured against a different base.
What this assumes
- Pure arithmetic on the percentages entered, with no assumption about how long recovery takes.
- It assumes the investment recovers at all, which is a very different question for an index than for a single company.
- Taxes and any harvested losses are excluded.
What changes this number
- Size of the loss
- The asymmetry compounds: a 50% fall needs a 100% rise, and an 80% fall needs 400%.
- Whether it can recover
- A diversified index has recovered from every fall so far; an individual company has no such record.
- Continued contributions
- Buying during the fall lowers the average cost and shortens recovery in a way this arithmetic does not show.
A worked example
Take the a 30% loss scenario. These figures are produced by the calculator above, not written alongside it, so they always match what the tool returns.
What you enter
- Loss
- 30%
What it returns
- Gain needed to break even
- 42.86%
- Your loss
- 30%
- Value after the loss
- $7,000
- Amount to recover
- $3,000
Sources
This calculator uses no external data — the result follows entirely from the formula above and the values you enter, so there is nothing to cite beyond the arithmetic.
Calculator last reviewed August 9, 2026. How we verify
Try an example
Frequently asked questions
Why does a 50% loss need a 100% gain to recover?
Because the gain is calculated on the smaller, post-loss balance. Lose 50% of $100 and you have $50; to get back to $100 you must double it — a 100% gain. The bigger the loss, the more lopsided this gets: a 90% loss needs a 900% gain to break even.
How do I calculate the gain needed to recover a loss?
Divide 1 by (1 minus the loss as a decimal), then subtract 1. For a 30% loss: 1 ÷ (1 − 0.30) − 1 = 0.4286, or about a 43% gain to break even. This asymmetry is why avoiding large losses matters more than chasing large gains.
What does this mean for how I invest?
It's the case for managing risk and diversifying: recovering from a catastrophic loss can take years or may never happen. Avoiding a 50%+ drawdown is worth more than an occasional big win, which is why broad diversification and appropriate risk levels beat concentrated bets for most investors.
Does this apply to my whole portfolio or single stocks?
Both, but it's most dangerous with concentrated positions. A diversified index can fall 30–50% in a bad market and historically recovers over time; an individual stock that drops 80% may never come back if the company is impaired. The recovery math is identical — the odds of actually recovering are not.
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Disclaimer: DayCents provides this calculator for educational purposes only. Results are estimates based on your inputs and the stated assumptions — they are not financial advice, a quote, or an offer of credit. Consult a qualified financial professional before making major money decisions.