Daily loss and recovery return calculator
Enter principal and dated closing prices on the left. Current P&L and the gain needed to recover appear on the right, with the full path in the chart and table below.
Assumptions
Live result
Enter at least two dated closes or load a sample to calculate return, drawdown, and the gain needed to recover.
- Day-over-day
- —
- Maximum drawdown
- 0.0%
- Average daily change
- 0.0%
- Recovery-time scenario
- —
Daily analysis
Add closing prices to build the chart and table from the first date.
| Date | Close | Daily change | Since entry | Current value | From peak | Gain needed |
|---|---|---|---|---|---|---|
| Enter at least two dated closes to see daily change, cumulative return, drawdown, and the gain needed to recover. | ||||||
Enter at least two dates with closing prices greater than zero.
ready to use.
- Visible firstKeep the input and result positions clear.
- Results firstPut the main number up front and keep the process secondary.
- Less to askNo sign-up or extra information before using the tool.
Reading the distance back to principal after a loss
The calculator treats the earliest valid close as entry, then calculates daily change, cumulative return, maximum drawdown, current value, and the gain needed to return to principal.
This is an arithmetic model built from your entries. It excludes fees, taxes, dividends, corporate actions, and later trades. The annual return field is only a user-entered timing assumption.
Why a loss and its recovery gain are not equal
If the loss rate is l, the remaining value is 1-l. The gain required to return to the starting value is l/(1-l).
A 10% loss needs about 11.1%, a 20% loss needs 25%, and a 50% loss needs 100%.
- 10% loss: 11.1% recovery gain
- 20% loss: 25% recovery gain
- 50% loss: 100% recovery gain
How the dated rows establish the baseline
Enter a date and close in each row. The calculator sorts valid rows and uses the earliest close as the entry baseline.
You can add or remove rows up to a total of 14. Results update as soon as two valid dates are available.
- Principal is optional
- Pair each date with one close
- One valid row is used per date
Daily change answers a different question
Daily change compares one close with the previous close. Since-entry return compares every row with the first close.
Two paths can end with the same loss while arriving there through a sharp drop or a slow decline.
- Daily: previous close
- Cumulative: entry close
- Read both columns together
Maximum drawdown follows the running high
For each date, the calculator tracks the highest close seen so far and measures the decline from that peak. The worst reading is maximum drawdown.
A position can still be above entry while showing a drawdown from a higher point reached in between.
- New high resets the peak
- Below the peak produces a negative reading
- The deepest period reading becomes MDD
Current value assumes one purchase at entry
Units equal principal divided by the entry close. Current value equals those units multiplied by the latest close.
Actual fills, fractional-share rules, currency conversion, and trading costs are outside the model.
- Units = principal ÷ entry close
- Value = units × latest close
- P&L = value - principal
Recovery time is a scenario, not a target date
The calculator converts the required growth multiple into time under a constant annual compound return entered by the user.
Returns do not arrive at a steady rate, and another decline can extend the path. Do not read the result as a forecast or guarantee.
- Annual rate is user entered
- Constant compounding is a simplification
- No performance prediction
What the three sample paths reveal
The drop, rebound, and gradual-decline samples start from a common baseline but take different routes.
A rebound reduces the gain needed to recover, though that requirement remains until the price reaches the entry close.
- Drop: inspect one-day moves
- Rebound: measure progress from the low
- Gradual decline: see compounding losses
Invalid entries and calculator safety limits
Closing prices must be greater than zero, and at least two valid dates are required. Non-numeric entries produce an error.
Extremely large principal or price values are stopped before they can produce unreliable browser arithmetic.
- No zero or negative close
- At least two valid dates
- Safety-limit errors stop calculation
Cash flows and corporate actions left out
The model excludes fees, taxes, dividends, interest, added purchases, and partial sales.
If a split, reverse split, or similar corporate action occurs in the period, use a consistently adjusted price series or calculate it separately.
- Trading costs and taxes
- Dividends and interest
- Additional trades
- Splits and other corporate actions
Keep the arithmetic separate from the decision
The chart organizes the past prices you entered. It does not identify a buy or sell point.
Review the product, diversification, time horizon, liquidity needs, and loss tolerance with broad investor-education material.
- Arithmetic is not advice
- Read the product disclosures
- Check horizon and risk capacity
Questions about recovering from an investment loss
QWhy is the recovery gain larger than the loss?
After a loss, the percentage is applied to a smaller base. A 20% drop from 100 leaves 80, and 80 must rise 25% to return to 100.
QWhich date becomes the entry date?
The earliest valid date is used as entry, with that day’s close as the baseline. Rows are sorted before calculation.
QCan I leave principal blank?
Yes. Percentage metrics still work, while current value and dollar P&L remain blank.
QWhat does assumed annual return do?
It converts the required gain into a simple constant-return time scenario. It does not predict future performance.
QWhat happens when dates are duplicated?
Only the first valid row for a date is used. Use one closing price per date.
QDoes it handle additional purchases or sales?
No. It assumes one purchase at entry and an unchanged number of units.
QAre fees, taxes, and dividends included?
No. Fees, taxes, dividends, interest, splits, and other corporate actions can change actual account results.
QCan I use it for assets other than stocks?
The arithmetic works for any consistent dated price series. Trading costs, distributions, and price adjustments still need separate review.
General investor education
Checked 2026-08-10. These links provide broad investor education. The calculator reports arithmetic from user entries and does not predict any rate of return or performance.