Why this matters
Your usable risk is the room to the floor.
A $50K account does not mean you can risk like you have $50K. The real constraint is the distance between your current balance and the breach level.
Drawdown calculator
Prop firm drawdown calculator
Estimate your remaining room before breach so you do not size a trade like the headline account balance is real risk capital.
Remaining drawdown room $2,500
At $250 planned risk, that is about 10 full losing trades before breach.
Next step
Choose rules you can size around.
If the remaining room forces you into tiny size or panic trading, compare a different firm, plan, or drawdown type before buying.
Find a cleaner rule fit