This calculator shows how much you can still lose today and overall before you breach a prop firm's daily loss limit or max drawdown. Enter your account size, your firm's limits as a percent, your balance or equity at the daily reset, your current equity, and for trailing drawdown your highest equity so far. It returns your floors in dollars and your room left on each.
Both limits are a percent of your starting account size, converted to a fixed dollar amount. The daily floor is your day-start value minus the daily limit. With static drawdown, the max floor is account size minus the drawdown amount. With trailing drawdown, the floor is your high-water mark minus the same dollar amount, so it rises as your equity makes new highs. Room left is your current equity minus each floor.
The daily loss limit caps how much you can lose in one trading day, measured from your day-start balance or equity. Max drawdown caps the total loss on the account. It is measured from the starting account size if the drawdown is static, or from the high-water mark if it is trailing.
Static drawdown sets a fixed floor below your starting account size, and that floor does not move if the account grows. Trailing drawdown sets the floor a fixed dollar amount below your high-water mark, equal to the max drawdown percent of account size. As equity makes a new high, the floor rises and room left overall shrinks.
It's the most your account may lose within one trading day, usually set as a percent of the starting account size. It's measured from your balance or equity at the firm's daily reset, so check which value and which reset time your firm uses.
Multiply your account size by the daily limit percent to get the dollar limit, then subtract it from your day-start value. On a $100,000 account with a 5% limit that started the day at $102,000, the limit is $5,000 and the daily floor is $97,000.
Static drawdown fixes the floor below your starting account size, so it never moves. Trailing drawdown sets the floor a fixed dollar amount below your highest equity, so it moves up as your account grows and gives you less room after a new high.
The daily loss limit resets each trading day and caps one day's losses. Max drawdown covers the whole life of the account and caps your total loss from the starting size or, for trailing drawdown, from your high-water mark.
It works for any firm whose limits are a percent of account size. Firms differ in reset times, whether they use balance or equity, and how trailing drawdown locks, so always confirm the rules on your firm's own site.