TRADING / EVIDENCE INTO PRACTICE
Trading Drawdown: The Recovery Maths You Need Before a Loss
Work through drawdown and recovery calculations, distinguish deposits from performance, and build a practical review rule before increasing trading risk.
General education, not individual investment advice. Capital is at risk; examples are hypothetical. Read the disclaimer.
Measure losses from the previous equity peak, separate cash flows, and decide your review conditions before trying to recover a drawdown.
In this guide
An account drops 20%. It then rises 20%. You are not back where you started. The two percentages use different starting amounts, and that quiet change of denominator is the reason recovery becomes harder after a deep loss.
A drawdown is a fall from a previous peak. For an account with no intervening deposits or withdrawals, calculate it as (peak equity − current equity) ÷ peak equity. Include open positions at a consistent valuation time. Otherwise, leaving losing trades open can make the realised balance look healthier than the account.
A $10,000 account makes the asymmetry visible
Hypothetical dollar illustration: start at $10,000 and lose 20%, leaving $8,000. A subsequent 20% gain adds $1,600, taking the balance to $9,600. To recover the missing $2,000 from $8,000, the required gain is 25%.
For a loss fraction d, the required recovery fraction is d ÷ (1 − d). The formula assumes no external cash flows, no further loss and recovery to the same nominal peak. It does not account for inflation or the opportunity cost of time.
| Loss from peak | Remaining from $10,000 | Gain needed to recover |
|---|---|---|
| 10% | $9,000 | 11.1% |
| 20% | $8,000 | 25% |
| 40% | $6,000 | 66.7% |
| 50% | $5,000 | 100% |
These numbers are not reasons to chase higher returns. They explain why accepting a much larger risk to “get back to even” can create a worse problem. The old peak is an accounting reference, not an instruction from the market.
A deposit is not a profitable trade
Take the same $8,000 balance and deposit $2,000. Your account now displays $10,000, but trading has not recovered the loss. You supplied new money. Keep a cash-flow ledger alongside equity so a top-up does not erase what happened.
For a serious performance comparison with frequent contributions, use a return series that properly adjusts for cash flows. A simple start-to-end balance percentage can mislead. Even without specialist software, you can preserve dated deposits and withdrawals and avoid describing their effect as trading profit.
A losing streak and a failed strategy are different questions
Imagine a simulation that risks exactly 1% of remaining equity and loses on ten consecutive trades. Ignoring gaps and costs, $10,000 × 0.99¹⁰ leaves about $9,043.82, a 9.56% decline. This is an arithmetic illustration, not a recommended risk percentage or a probability estimate.
The calculation does not say how likely the streak is. It does not establish that the next trade will win, either. Ask separately whether the losses followed the written rules, whether execution matched the assumptions, and whether the market conditions fall inside the strategy’s intended use.
A rule-compliant loss deserves a different response from an accidental oversized order. Combining both under “bad luck” hides the operational fault you could fix. Your journal should record process errors independently of profits and losses.
Leverage can take away the option to wait
A borrowed position may be liquidated before a hoped-for recovery. The SEC explains that margin accounts can lose more than the investor contributed and that a broker may sell securities without advance notification. [SEC Investor.gov: Understanding Margin Accounts]
That changes the meaning of “I can hold through it.” A strategy that survives on an unleveraged spreadsheet may fail when collateral requirements, financing charges or broker liquidation intervene. Check the account agreement and product rules, rather than treating the recovery table as a promise that time will solve the loss.
Write the review decision while you are calm
Use three fields: the condition that triggers review, the information you will inspect, and what happens while the review is incomplete. Conditions might involve an unexplained fill, a position outside the plan or a loss beyond the scenario you assessed. Choosing exact monetary limits requires your own financial circumstances; FINRA’s risk-tolerance guidance connects risk with timeframe and dependence on the funds. [FINRA: Know Your Risk Tolerance]
A review is more useful when it can produce several answers: repair an execution issue, reduce an assumption you cannot defend, keep observing in simulation, or stop. Doubling exposure is not a required step in any of those answers. The practical aim is to preserve the ability to make the next decision without the old peak dictating it.
Sources and further reading
Sources checked on 6 October 2026. Links support the nearby factual claims; worked examples and checklists are our educational illustrations.
- SEC Investor.gov: Understanding Margin Accounts
Borrowing magnifies losses; brokers may liquidate without advance notice.
- FINRA: Know Your Risk Tolerance
Capacity for losses, timeframe and reliance on invested funds.
Prepared with AI assistance for the Mika vs Guru publishing team. This is not a claim of professional accreditation or independent peer review. How we research, label examples and handle corrections.