Scalping, swing or algo: which prop firm rules actually matter

Trading style determines which rules are blocking, and therefore which selection criterion comes first. A scalper looks first at spread, commission, execution quality and the clauses targeting high frequency or a minimum holding time. A swing trader looks at overnight and weekend holding, swaps, and how the daily drawdown is calculated — equity or balance. An algorithmic trader looks at whether robots are permitted, the ban on martingales and grids, and the rules on copying between accounts. The challenge price and the profit split come only afterwards: a cheap firm whose rules prohibit your approach costs 100 % of the stake.

A hierarchy of criteria, not a list

Comparison sites generally rank firms by price, target and profit split. Those three criteria are comparable across all firms, which makes them convenient, but they decide nothing until style compatibility is established. An incompatible rule produces either an elimination or a strategy distorted to fit the frame — both lead to the same place.

The right sequence: style compatibility, drawdown calculation method, withdrawal conditions, and only then price and profit split.

Scalping and fast intraday

Transaction cost becomes the dominant variable

A scalper aiming at a few points per trade sees their expectancy eaten directly by spread and commission. Two firms advertising the same profit target do not demand the same effort if one charges double in cost per lot. Across several hundred round turns during a challenge, the gap far exceeds any difference in entry price.

To check before buying: the round-turn commission per lot, the average spread observed at the hours you trade rather than the advertised minimum spread, whether raw accounts exist alongside marked-up ones, and the broker or technology used behind the scenes.

The clauses that target scalping without naming it

Several restrictions hit fast trading indirectly: a minimum holding time for a position, a ban on latency arbitrage, a cap on trades per minute, a ban on exploiting a quote discrepancy, reclassification as high frequency beyond a certain pace. Some firms state a numeric threshold, others settle for open wording, which leaves room for interpretation at withdrawal time — that is where the problem shows up, rarely before.

News scalping deserves particular attention: it is often the exact intersection of two prohibitions, the macro window and execution speed.

What to check

Commission per lot, spread at the hours traded, minimum holding time, any frequency cap, explicit policy on scalping and on execution during releases.

Swing trading and multi-day positions

Overnight and weekend

The first question is binary: does the account allow positions to be held overnight and over the weekend? Some products, notably accounts built around indices or models inspired by futures, close everything before the weekly close. A strategy holding positions for five days is simply not executable on them.

Swaps follow, often neglected in profitability calculations. A position held for several weeks on a pair with an unfavourable rate differential can see its gain significantly reduced, and the cost counts against the drawdown like any other loss.

Daily drawdown calculated on equity

This is the point that eliminates the most swing traders. When the daily limit is on equity, an open position breathing against you consumes the limit in real time, even if your stop is far away and your thesis still holds. A normal swing position mechanically goes through phases of unrealised loss that the intraday frame does not tolerate.

Two possible responses: find a firm whose daily limit is on the closing balance, or size the position so that the worst conceivable adverse move stays under the limit — which implies very reduced sizes and a wide stop.

What to check

Overnight and weekend permission, how swaps are applied, the basis for the daily drawdown, whether a maximum holding period exists, and how the account behaves on Sunday evening gaps.

Algorithmic trading

What is prohibited almost everywhere

One family of practices is refused by almost every firm: latency arbitrage, exploiting a delayed price feed, martingale and grids without stops, copying trades between accounts or from a signal provider, robots shared between several traders at the same firm, and any technique aiming to exploit a quoting flaw rather than a market move. These bans appear in the terms and conditions and are checked at withdrawal time, when the full history is examined.

What depends on the firm

The rest varies a lot. Using an expert advisor is sometimes unrestricted, sometimes subject to prior declaration, sometimes limited to non-high-frequency strategies. Some firms require the code to be personal and not commercially distributed. Others impose a degree of manual intervention. VPS availability, API access, the platform supported and connection stability also weigh: an algo suspended by a server disconnection can leave open positions unprotected.

At the most established CFD firms such as FTMO, FundingPips and E8 Markets, these policies are documented on a dedicated page. A firm that says nothing about automation is not implicitly allowing it: it is reserving the option to invalidate later.

What to check

Explicit permission for EAs, any declaration obligation, the ban on shared strategies, platform and latency, the policy in case of disconnection, and the treatment of very closely spaced trade series generated by the code.

News trading, a cross-cutting case

Restrictions around macro releases concern every style but do not read the same way. Some prohibit opening a position in a window around the release. Others also prohibit holding a position already open, which forces you to close beforehand. Others again restrict nothing but exclude gains made during those windows from the calculation. For a swing trader, a holding ban is far more binding than an opening ban, since it requires exiting a running position for purely regulatory reasons.

Two families of rules by product

Firms built around CFDs and those built around futures do not apply the same mechanics. On the CFD side, percentage targets, daily limits and news windows dominate. On the futures side, you more often find a drawdown expressed as an amount and following the highs, rules requiring closure before the daily close, and monthly subscription pricing rather than a one-off payment. Styles sit differently in those two worlds: intraday scalping on highly liquid products fits well, multi-day swing far less.

The question grid before paying

• Is my average holding time compatible with the minimum and maximum holding rules?
• Is the daily drawdown on equity or on the closing balance?
• Can positions stay open overnight and over the weekend?
• What is the round-turn cost per lot, and where does the spread sit during my trading hours?
• Is automation permitted, declared, or tolerated without anything in writing?
• Does the news policy prohibit opening, holding, or only counting the gains?
• Are these rules written in a public, dated document, or scattered through a FAQ?

The last question is the most discriminating. A firm whose rules are precise and versioned lets you check them before paying. A firm whose rules are vague is reserving the right to decide at the moment your money is at stake.