How to set a daily loss limit and actually stop when you hit it

Most blown accounts don't die in one trade. They die on one day: a loss, a "revenge" trade to win it back, a bigger one after that. A daily loss limit is a number you set before the session that ends the day when it is reached. Setting it is easy. Respecting it is the skill.

Step 1: choose the number in advance

Express the limit both as a percentage of the account and as the number of losing trades it allows. With a fixed risk per trade, the two are linked.

Account	Risk per trade	Daily limit	Losing trades allowed
$2,000	0.5% ($10)	2% ($40)	4
$2,000	1% ($20)	2% ($40)	2
$5,000	1% ($50)	3% ($150)	3

Illustrative calculation, not an expectation of results.

Two or three losing trades is a common range: enough to give a plan room for normal variance, small enough that a bad day stays a bad day. The risk per trade comes from your stop and size; work it out with the lot size calculator.

Step 2: decide how you count

• Count in money, including spread, commission and swap, not in pips.
• Count closed losses plus open losses. If an open trade would take you past the limit at its stop, you are already at the limit.
• Decide when the "day" starts. For a trader in Brasília (UTC−3), a simple choice is the session you actually trade; check its hours in the market sessions tool.

Step 3: make stopping automatic

A rule that depends on willpower at the worst moment will fail. Make it mechanical:

1. Write the limit on the first line of your trading plan and in your journal before the session.
2. When it is reached, close the platform, not just the chart. Log the day and stop.
3. If your platform or broker lets you set a daily loss or risk limit, use it as a backup.
4. Review the day the next morning, not the same evening.

Add a weekly limit

A daily limit protects against one bad day; a weekly one (for example 2 to 3 times the daily limit) protects against a bad streak. When it is reached, the rest of the week is for review and demo trading only. The losing-streak arithmetic in Fixed fractional vs fixed lot shows why small limits matter.

When the limit keeps getting hit

Hitting the limit often is information. Check your journal: is it one setup, one hour, trading after news? Correlated trades can also make you reach the limit faster than expected, as explained in Correlated positions.

In short

Pick the limit before the session, count it in money including open risk, make stopping mechanical and add a weekly limit. The aim isn't to avoid losing days, which every trader has, but to keep any single day small.