What is spread in prop trading?
What the bid-ask spread is, why it matters more inside a prop firm evaluation than anywhere else, and how to read measured spread data instead of marketing tables.
How drawdown limits actually work
Daily loss limits, overall drawdown, static versus trailing anchors, and why spreads and commissions quietly spend the same headroom your losing trades do.
Every prop firm evaluation runs on two clocks. One counts toward the profit target. The other counts down the drawdown you are allowed before the account fails. Most traders watch the first clock; the second one is the one that ends evaluations, and it is defined in the firm's published terms with more variation than most traders expect.
The two limits
- A daily loss limit caps how much the account can lose inside a single trading day, usually measured against the day's starting balance or equity.
- An overall drawdown limit caps the total distance the account can fall, measured against the initial balance or against a moving high-water mark.
Static versus trailing
A static limit anchors to the starting balance and never moves: the failure line is fixed on day one. A trailing limit anchors to the highest point the account reaches, so the failure line climbs behind profits. The difference is decisive: under a trailing limit, giving back open profit can fail an account that never went below its starting balance. Whether the anchor tracks balance or equity, and whether it ever stops trailing, are exactly the details worth reading in a firm's own terms before paying a fee.
Costs spend the same headroom
Drawdown headroom is spent by losing trades, but also by every cost attached to winning ones. Each position opens at a small loss equal to the spread, plus commission, plus whatever the fill slipped. On one trade that is noise. Across the dozens of trades an evaluation takes, it is a meaningful slice of the loss budget, which is why the same strategy survives longer on cheaper execution and why this site measures trading costs at all.
Reading a firm's drawdown rules and knowing its measured costs are two halves of the same preparation: the rules define how much room you have, and the costs decide how quickly ordinary trading uses it up.
What those costs look like right now
The module below prices one EUR/USD lot at the tracked firms from the currently sampled spread plus each firm's published commission. Multiply a figure by the number of trades an evaluation takes you and compare it against a typical loss budget: that proportion is the quiet tax this article is about.
What one lot costs right now: EUR/USD
FTMO, FundingPips and FundedNext are offline (since 23 Sep and 13 Sep). Not ranked.
Source: Prop Spread's sampling of each firm's live feed, converted to dollars with the commission each firm publishes. Slippage is not included. How the figures are made
Cite this research
Source: Prop Spread Research, "How drawdown limits actually work", accessed 2026-10-06, https://www.propspread.com/knowledge/guides/how-drawdown-limits-work
Link to this page when quoting figures, so readers can see the current values and the methodology behind them.
Questions
Is a trailing drawdown always worse than a static one?
Not always, but it demands different behaviour: protecting open profit matters as much as avoiding losses, because the failure line follows your high-water mark. Which anchor a firm uses, and on balance or equity, is defined in its own published terms.
Does the daily limit reset at midnight?
Each firm defines its own reset time and reference point in its terms, and the difference between a balance-based and an equity-based daily limit is material when positions are held through the reset. Read the definition, not just the percentage.
Do spreads really move the needle on drawdown?
Per trade the amount is small. Across an evaluation it compounds: the same strategy takes the same trades, so the difference between two firms' round-turn costs is spent straight out of the loss budget. The live module above puts current numbers on that difference.
Next steps
Related research
What is slippage in prop trading?
What slippage is, why it cannot be read off a price feed, and why Prop Spread leaves it out of every cost it shows.