How to Read a Prop Firm Rulebook Before You Buy

Every account blown on a technicality started the same way: with a rule the trader skimmed. The rulebook is the only document that decides whether you keep your money, and it deserves more attention than the marketing page that sold you the challenge.

The good news is that rulebooks are more alike than they look. Once you know which clauses actually end accounts, auditing a new firm takes fifteen minutes and saves you from the expensive kind of surprise. Here’s the checklist.

The five numbers to extract before you buy

Before anything else, pull these five figures out of the rulebook and write them on a single line. If you can’t find one, that absence is itself a red flag worth a support ticket:

Maximum drawdown — the total loss that ends the account.
Maximum daily loss — the single-day loss that ends it.
Profit target — what you must reach to pass (or “none” for instant-funding models).
Minimum trading days — how many days you must trade before passing or withdrawing.
Consistency cap — how much of your profit a single day may represent.

Everything else in the rulebook modifies how these five behave. Get them wrong and no amount of skill saves you; get them right and the rest is detail. Deliberately, this guide won’t quote you actual figures — firms revise them constantly and they differ by program — so treat the current rulebook as the source of truth every single time.

Finding the drawdown type and reset behavior

The most consequential clause in any rulebook isn’t the drawdown number — it’s the drawdown type. Two accounts with an identical limit can behave completely differently depending on how that limit is calculated. Look for language that tells you whether the floor is:

Static / end-of-day — a fixed line, or one that only moves at the daily close.
Trailing / intraday — a line that follows your equity higher, tick by tick.
Locked at initial balance — a trailing floor that stops moving once it reaches your starting balance.

Then find the reset behavior: does the floor change after a payout? Does it reset at the start of each day? Our explainer on trailing drawdown shows why these distinctions matter more than the headline percentage. Once you know the type, a prop-firm drawdown calculator turns it into the one number you actually trade against: how much you can afford to lose right now before the floor.

Locating the consistency, news, and holding rules

Past drawdown, three clusters of clauses quietly disqualify traders at payout time. Hunt them down specifically:

Consistency rules. How is your profit distribution judged? Is there a cap on your best day, and does it apply during the challenge, after funding, or both? A consistency-rule calculator tells you the maximum any single day may contribute so you can pace toward the target without tripping it.
News and event restrictions. Are you barred from holding or opening trades around high-impact releases? Some firms void trades placed in a window around scheduled news.
Holding rules. Can you hold overnight? Over the weekend? Some funded accounts require you to be flat by the close, and violating that is a breach even if you’re green.

These are the clauses least likely to be on the sales page and most likely to appear in the fine print. Skim past them and you can pass the evaluation cleanly, then lose a payout to a rule you never saw.

Reading the payout and refund fine print

The last section people read is usually the one that determines whether they ever see money. Work through the payout terms with the same care you gave drawdown:

First payout eligibility — how long and how many days until you can withdraw.
Profit split — your share, and whether it improves as you scale.
Payout cadence — how often you can withdraw, and any minimum amount.
Refund of the evaluation fee — whether, when, and under what conditions you get it back.
Buffer or reserve — whether the firm holds back part of your balance after a withdrawal.

A prop-firm payout calculator is handy for modeling what a given split and cadence actually put in your pocket over a few months, which is a more honest way to compare firms than the headline account size. As always, the exact splits and timelines change — verify them against the live rulebook and, where it’s ambiguous, a support ticket.

Turning the rulebook into a one-page cheat sheet

Reading the rulebook once isn’t enough; you need the load-bearing numbers in front of you while you trade. Condense your audit into a single reference:

The five numbers from the top of this guide.
Your drawdown type and whether it resets after payout.
The consistency cap and the news/holding restrictions.
Your per-trade risk, derived from the real distance to the floor.

Keep that sheet where you can see it at the open. Better still, let the enforcement happen automatically: Shibiki turns the rulebook’s hard limits into broker-side risk limits — a maximum daily loss and drawdown buffer that hold at the account level even in a moment of weakness — and its auto-journaling keeps a clean record of every trade against those limits. When you run several accounts, the same strategy can be copied across them so the rules you audited once are enforced everywhere at once. The rulebook only protects you if you turn it into something that acts on your behalf. Start your audit with a well-documented firm like FTMO to see what a complete rulebook looks like, then hold every other firm to that standard.