# Fixed Percentage vs Fixed Dollar Risk

> Fixed percentage risk sizes trades as a share of your current account; fixed dollar risk uses one amount. Compare drawdowns, growth and when to use each.

Source: https://learn.tradelabsai.com/risk/fixed-percentage-risk/  
Track: Risk Management · Level: Beginner · Updated: 2026-10-03  
Publisher: TradeLabs AI (https://tradelabsai.com). Education, not financial advice.  
Cite as: TradeLabs Learn, "Fixed Percentage vs Fixed Dollar Risk", https://learn.tradelabsai.com/risk/fixed-percentage-risk/

Once you decide to size positions from your stop, the next question is how much to risk per trade. The two common approaches are **fixed percentage risk**, where you risk the same percentage of your current account on each trade, and **fixed dollar risk**, where you risk the same dollar amount every time. Both are simple and both control risk, but they behave differently in drawdowns and in growth.

## How each works

| | Fixed percentage | Fixed dollar |
|---|---|---|
| Rule | Risk X% of current account per trade | Risk $Y per trade |
| After losses | Risk per trade shrinks | Risk stays the same |
| After gains | Risk per trade grows | Risk stays the same |
| Growth | Compounds | Grows linearly |
| Drawdowns | Self limiting | Can deepen faster as a percentage |

## Fixed percentage in action

**Example: Ten losses in a row at 2%**
Start: $10,000, risking 2% per trade.
Trade 1 risks $200, leaving $9,800. Trade 2 risks $196, leaving $9,604. After ten losses, the account is about $8,171, a drawdown of about 18.3%.
With fixed $200 risk instead, ten losses cost $2,000, a 20% drawdown. The difference grows with longer streaks: after 25 losses, fixed percentage leaves about $6,035 (minus 40%); fixed dollar leaves $5,000 (minus 50%).

Fixed percentage risk automatically reduces bet size as the account shrinks, which slows the decline. It can never take the account to zero through a losing streak alone, because each loss is a fraction of what remains.

## The recovery problem

Fixed percentage has one uncomfortable property: because you risk less after losses, it takes more winning trades to recover a drawdown than it took losing trades to create it.

| Drawdown | Gain needed to recover |
|---|---|
| 10% | 11.1% |
| 20% | 25% |
| 30% | 42.9% |
| 50% | 100% |

This is true for any method, but fixed percentage makes it visible trade by trade. It is a reason to keep risk per trade small in the first place. See [Maximum Drawdown](https://learn.tradelabsai.com/portfolio/maximum-drawdown/).

## Fixed dollar in practice

Fixed dollar risk is simple and easy to track: every trade risks, say, $100. It works well for:

- **Beginners** building consistency, because the numbers stay the same.
- **Testing a new strategy** at a small, constant size.
- **Traders who withdraw profits regularly** and do not want compounding.

Its downside is that a long losing streak eats into the account faster as a percentage, and a growing account takes on relatively less risk unless you update the dollar figure.

## A practical hybrid

Many traders use a hybrid: fixed dollar risk recalculated at set intervals, such as monthly, from the current account value. For example, risk 1% of the account's value at the start of each month. This keeps daily numbers simple while still adapting to growth and drawdowns over time.

## Choosing your percentage

Most professional guidance falls between 0.5% and 2% per trade. Things to consider:

- **Win rate and streaks:** lower win rate strategies have longer losing streaks; risk less. See [Losing and Winning Streaks](https://learn.tradelabsai.com/risk/losing-and-winning-streaks/).
- **Correlation:** if you often hold several related positions, risk less per trade. See [Portfolio Heat](https://learn.tradelabsai.com/risk/portfolio-heat/).
- **Your tolerance:** choose a level where a 10 trade losing streak would not make you abandon your plan.

The [Kelly Criterion](https://learn.tradelabsai.com/risk/kelly-criterion/) offers a mathematical upper bound, but it usually suggests far more risk than is wise in practice. See [Fractional Kelly](https://learn.tradelabsai.com/risk/fractional-kelly/).

## Common mistakes

- **Rounding risk up** on trades you feel confident about.
- **Never recalculating** fixed dollar risk as the account changes.
- **Choosing a percentage you cannot emotionally tolerate** during drawdowns.

## Frequently asked questions

### Is fixed percentage risk better than fixed dollar?

For long term growth and drawdown control, fixed percentage is often preferred because it compounds and self limits losses. Fixed dollar is simpler and suits beginners and testing.

### What is the 1% rule in trading?

Risking no more than 1% of your account on any single trade, so that losing streaks cause manageable drawdowns.

### Why does it take more to recover from a loss?

Because each percentage loss reduces the base. After a 50% loss, you need a 100% gain on the remaining money to get back to where you started.

Next, adapt your size to market conditions with [Volatility and ATR-Based Sizing](https://learn.tradelabsai.com/risk/volatility-and-atr-based-sizing/).

## Continue learning

- Next lesson: [Volatility and ATR-Based Sizing](https://learn.tradelabsai.com/risk/volatility-and-atr-based-sizing/)
- Previous lesson: [Position Sizing](https://learn.tradelabsai.com/risk/position-sizing/)
- Related: [Position Sizing](https://learn.tradelabsai.com/risk/position-sizing/): Position sizing decides how many shares or contracts to trade so each loss stays small. Learn the formula, worked examples for each market and common mistakes.
- Related: [Risk of Ruin](https://learn.tradelabsai.com/risk/risk-of-ruin/): Risk of ruin is the chance that losses drain your account beyond recovery. Learn what drives it, see simulated numbers and how to keep it low.
- Related: [Losing and Winning Streaks](https://learn.tradelabsai.com/risk/losing-and-winning-streaks/): Losing streaks are a normal part of any strategy. See how long streaks get at different win rates, why they happen and how to handle them without breaking rules.
- Related: [Compounding and Geometric vs Arithmetic Returns](https://learn.tradelabsai.com/math/compounding/): Compounding means returns earn returns over time. Learn the formulas, why losses hurt more than gains help, volatility drag and how it shapes position sizing.
- Related: [Kelly Criterion](https://learn.tradelabsai.com/risk/kelly-criterion/): The Kelly criterion finds the bet size that maximises long term growth given your edge. Learn the formula, worked examples and why most traders use less.