On a small evaluation account, contract size isn’t a detail — it’s the whole game. A mini contract can be too blunt an instrument to fit a correct stop inside a tight drawdown, while a micro lets you honor the exact same trade idea at a fraction of the dollar risk. Choosing between them is really choosing how much room for error you get.
Mini vs micro contract sizes and tick values
Futures come in two sizes that matter for prop trading: the E-mini and the E-micro. The micro is a shrunk-down version of the same contract — same underlying, same chart, roughly one-tenth the dollars per move.
| Contract | Type | Per point / move |
|---|---|---|
| ES | E-mini S&P 500 | $50 / point |
| MES | Micro S&P 500 | $5 / point |
| NQ | E-mini Nasdaq | $20 / point |
| MNQ | Micro Nasdaq | $2 / point |
| GC | Gold | $100 / $1 move |
| MGC | Micro Gold | $10 / $1 move |
| CL | Crude Oil | $1,000 / $1 move |
| MCL | Micro Crude | $100 / $1 move |
The chart is identical. The setups are identical. The only thing that changes is how many dollars ride on each tick — and on a thin account, that’s the variable that decides whether you survive a normal losing run.
Why micros suit small evaluation accounts
An evaluation gives you a limited drawdown cushion and asks you not to touch the floor. The math of a mini contract fights you here.
A structurally correct stop — placed beyond the level that would prove your idea wrong, not jammed tight to save money — might be 10 to 20 points on an index. On the mini, that’s a meaningful chunk of a small account’s cushion per contract. You’re forced into a choice between a too-tight stop (that noise triggers) and a too-large risk (that a couple of losers turns into a breach).
Micros dissolve the dilemma:
- You keep the correct stop — placed where the trade is actually invalidated.
- You shrink the dollar risk to something a small cushion absorbs comfortably.
- You get a real losing streak of room before the floor is in play, instead of two bad trades.
For most new prop traders, micros aren’t a training-wheels compromise. They’re the precision tool that makes a tight-drawdown account tradable at all.
Sizing inside a futures drawdown limit
The one rule that keeps you funded: decide your dollar risk first, then let the contract count fall out of it — never the reverse.
The process is mechanical:
- Set your per-trade risk as a small, fixed fraction of your remaining cushion.
- Measure your stop distance in points, from the setup — not from what you can afford.
- Convert to dollars per contract using the tick value above.
- Divide your per-trade risk by dollars-per-contract to get your position size.
A position size calculator does the arithmetic, and because futures trailing-drawdown floors move up as your balance grows, model how a run of losses walks toward the line with a prop-firm drawdown calculator. The reason micros win this exercise is granularity: when the math says “1.4 contracts,” a micro lets you actually trade 1, where the mini would round you up into oversizing or down into no trade at all.
Scaling from micros to minis safely
Ten micros equal one mini. That equivalence is your on-ramp — you can scale size continuously instead of leaping from nothing to a full mini.
The disciplined progression:
- Start in micros and add one at a time as your account and confidence grow. Adding a single MES changes your risk by a small, survivable step.
- Treat one mini as ten micros’ worth of risk, and only step up to the mini once your cushion absorbs that dollar risk the same way it absorbed your micro size.
- Don’t let a green streak rush the jump. The temptation to “graduate” to minis after a good week is exactly how a small account meets its drawdown. Size follows a proven, established edge — not a hot hand.
Whether your firm’s platform routes to micros or minis is worth confirming — most futures prop platforms via Tradovate or ProjectX support both, but permitted contracts and scaling rules vary by firm, so check the current list with yours.
A quick sizing example
Say your remaining cushion lets you risk a modest fixed amount per trade, and your setup needs a stop of about 12 points on the Nasdaq.
- On NQ (the mini): 12 points × $20 = $240 of risk per contract. On a thin account, that might be more than your whole per-trade budget — meaning even one NQ is oversized, and you’re forced to trade a stop tighter than your setup allows.
- On MNQ (the micro): 12 points × $2 = $24 of risk per contract. Now you can hold the correct 12-point stop and trade several contracts inside the same budget — or trade one and keep enormous room to spare.
Same idea, same chart, same stop. The micro turned an untradeable trade into a comfortable one. That’s the entire case for micros on a small account.
Whichever size you settle on, keep it honest by measuring. Shibiki auto-journals every fill and tags each trade’s R-multiple, so you can see whether your sizing is actually consistent or quietly creeping up on winning days — and its hard broker-side max-loss limit stops the account before a mis-sized position can reach the floor while you’re away from the screen. Firms like Apex Trader Funding set their own contract and scaling rules; confirm them before you size up.
Related: Position size calculator · Tradovate integration · Apex Trader Funding