E-mini vs. Micro Futures: Which Contract Size Fits You?
The choice between E-mini and Micro futures comes down to one thing: how much dollar risk you can manage per trade. Both track the same underlying indices; the difference is size. Micro contracts are exactly 1/10th the size of their E-mini counterparts.
This guide covers the practical differences between E-mini and Micro futures: tick values, margin, cost per trade, and which type suits different trader profiles. We’ll use concrete numbers so you can make an informed decision rather than guessing.
What Are E-mini Futures?
E-mini futures were introduced by the CME in 1997 as a smaller, electronically traded alternative to the full-size S&P 500 futures contract. They quickly became the most actively traded futures contracts in the world.
The “E-mini” in the name refers to electronic trading and the reduced contract size (originally 1/5th of the standard S&P 500 contract). Today, the E-mini S&P 500 (ES) is the benchmark product for equity index futures trading.
What Are Micro Futures?
Micro E-mini futures were launched by the CME in May 2019 to give retail traders and beginners access to the same markets at 1/10th the contract size. Each Micro contract represents 1/10th of its corresponding E-mini contract.
They track the same underlying index, expire on the same schedule, and behave identically in terms of price movement, but the dollar impact of each tick is 10× smaller.
E-mini vs. Micro Futures: Side-by-Side Comparison
S&P 500: ES vs. MES
| Spec | E-mini S&P 500 (ES) | Micro E-mini S&P 500 (MES) |
|---|---|---|
| Contract multiplier | $50 per index point | $5 per index point |
| Tick size | 0.25 points | 0.25 points |
| Tick value | $12.50 per tick | $1.25 per tick |
| Overnight margin (approx.) | ~$13,000 | ~$1,300 |
| Day trading margin (approx.) | $500–1,000 | $50–100 |
| Contract value at 5,200 | ~$260,000 | ~$26,000 |
| Typical daily range (ticks) | 40–100 ticks | Same range |
| Daily P&L range (1 contract) | $500–$1,250 | $50–$125 |
Nasdaq-100: NQ vs. MNQ
| Spec | E-mini Nasdaq-100 (NQ) | Micro E-mini Nasdaq-100 (MNQ) |
|---|---|---|
| Contract multiplier | $20 per index point | $2 per index point |
| Tick size | 0.25 points | 0.25 points |
| Tick value | $5.00 per tick | $0.50 per tick |
| Overnight margin (approx.) | ~$20,000 | ~$2,000 |
| Day trading margin (approx.) | $1,000–2,000 | $100–200 |
| Contract value at 20,000 | ~$400,000 | ~$40,000 |
| Daily P&L range (1 contract) | Highly variable | 10× smaller |
Other Micro Contracts Available
| E-mini | Symbol | Micro | Symbol |
|---|---|---|---|
| E-mini Dow | YM | Micro E-mini Dow | MYM |
| E-mini Russell 2000 | RTY | Micro E-mini Russell | M2K |
| E-mini S&P MidCap 400 | EMD | Micro E-mini MidCap | MES (different) |
Dollar Risk Per Trade: The Core Difference
The most practical way to understand the E-mini vs. Micro decision is through dollar risk per trade.
Example: 10-tick stop loss on ES vs. MES
If you place a trade with a 10-tick stop loss:
- ES: 10 ticks × $12.50 = $125 risk per contract
- MES: 10 ticks × $1.25 = $12.50 risk per contract
That $12.50 per contract on MES means you can genuinely afford to let the trade breathe. On a $5,000 account using MES with a 10-tick stop, you’re risking 0.25% of your account per contract. On ES, the same stop is 2.5%, already at the edge of prudent risk management for most guidelines.
10 MES contracts = 1 ES contract. If you want the economic exposure of 1 ES contract but want to spread risk across entries or manage position more granularly, running 10 MES gives you identical dollar exposure.
Which Contract Should You Choose?
Start with Micro Contracts if:
You’re new to futures trading. The lower dollar risk per tick creates a forgiving environment to learn without catastrophic losses while you’re developing your edge. A string of bad trades on MES might cost you $100–200. The same string on ES could cost $1,000–2,000.
Your account is under $10,000. Proper risk management on ES requires meaningful account size. On a $5,000 account with a 2% per-trade risk limit ($100 max), a 10-tick stop on ES ($125) already puts you over your limit. MES lets you use proper risk management at smaller account sizes.
You’re in a prop firm evaluation. Many prop evaluations offer Micro accounts specifically for traders learning the evaluation rules. The lower tick values mean you won’t accidentally breach daily loss limits due to position sizing mistakes.
You want to practice scaling into and out of positions. Managing 5–10 MES contracts is a good way to practice partial entries and exits, skills you’ll need when trading larger size.
Consider E-mini Contracts if:
You have a consistent, proven edge in simulation. If you’ve traded hundreds of hours in sim and have clear statistics showing your strategy works, moving to ES makes sense from a capital efficiency standpoint.
Your account is $25,000+. At this level, you have the cushion to absorb ES volatility without routine margin calls or oversized percentage losses.
You’re a prop firm funded trader. Most funded accounts above $50,000 in buying power are sized for ES trading. The trailing drawdown limits are calibrated for ES volatility.
Transaction costs matter significantly. ES commissions per round trip are typically similar to MES in absolute dollar terms, but as a percentage of tick value, MES commissions represent a larger portion of your potential profit per trade. High-frequency traders will feel this more.
Cost Per Trade Comparison
Commission rates vary by broker, but a typical round-trip cost:
| Contract | Typical Commission (Round Trip) | As % of 1-Tick Move |
|---|---|---|
| ES | $3.50–5.00 | 28–40% of $12.50 tick |
| MES | $0.50–1.00 | 40–80% of $1.25 tick |
On very short-term scalping strategies (1–3 tick targets), MES commissions are a significant handicap. For swing trades or strategies targeting 10+ ticks, the commission difference is manageable.
Prop Firm Context: Which Contracts Do Evaluations Use?
Most prop firms offer accounts sized for both Micro and E-mini trading:
- Smaller evaluation accounts ($25K–50K): Usually calibrated for Micro contracts. Max position sizes of 3–5 MES/MNQ.
- Mid-size accounts ($50K–100K): Mixed, often allow ES/NQ trading with limits of 2–5 contracts
- Larger funded accounts ($150K+): Designed for ES/NQ trading with larger position allowances
When choosing an evaluation account size, read the contract allowances carefully; they’re often listed in the firm’s FAQ or product page. See our prop firm comparison for specifics by firm.
Practical Example: Building from Micro to E-mini
A common progression for developing traders:
Stage 1, Learning (Simulation): Trade 1–3 MES or MNQ contracts. Focus on consistency, not size.
Stage 2, Small Live Account: Trade 1–2 MES with real money on a Micro account or small prop evaluation. Get used to real money psychology.
Stage 3, Scaling Micro: Once consistently profitable with 1–2, scale to 5–10 MES. Learn position management at scale.
Stage 4, Transition to E-mini: 10 MES = 1 ES. When you’re trading 10 MES consistently, you have the economic exposure of 1 ES contract. Moving to ES at this point is a direct substitution, not a step up in risk.
This progression is slower than going straight to ES, but the traders who follow it tend to survive long enough to become profitable.
Summary
The E-mini vs. Micro decision comes down to account size, experience level, and risk tolerance:
- Micro contracts (MES, MNQ): Right for beginners, small accounts, and prop evaluation traders. 10× less dollar risk per tick. Lower cost of mistakes.
- E-mini contracts (ES, NQ): Right for experienced traders with consistent edges, larger accounts, and funded accounts sized for standard contract trading.
Both track the same markets. Neither is inherently “better”; the right choice is the one that fits your current stage.
For a deeper look at the two most popular E-mini contracts, see our ES vs. NQ comparison. And if you’re ready to start trading, our futures trading beginner’s guide covers everything from margin to session timing.
Key Takeaways
- Micro contracts are exactly 1/10th the size of E-mini contracts, tracking the same underlying indices with identical price movement at 10x lower dollar risk
- On a $5,000 account, a 10-tick stop on MES risks $12.50 per contract (0.25% of account); the same stop on ES risks $125 (2.5%), already at the edge of prudent risk management
- 10 MES contracts equal 1 ES contract economically; traders can scale from micros to E-minis by gradually increasing micro contract count
- MES commissions represent a larger percentage of each tick’s value (40-80%) compared to ES (28-40%), making micro scalping strategies less viable
- The recommended progression is: simulation, then 1-2 MES live, then 5-10 MES, then transition to 1 ES when consistently profitable
Frequently Asked Questions
When should I switch from Micro to E-mini contracts?
When you are consistently trading 10 MES contracts profitably and your account is $25,000+. At 10 MES, you already have the economic exposure of 1 ES contract. The transition is a direct substitution, not a step up in risk. Do not switch to E-mini simply because you want bigger numbers.
Are Micro futures less liquid than E-minis?
Micro contracts have excellent liquidity, though slightly less than E-minis. Bid-ask spreads on MES and MNQ are typically 1 tick during regular trading hours. For most day traders, the liquidity difference is imperceptible. Very large position sizes (50+ micro contracts) may experience slightly wider spreads.
Do prop firms allow Micro contract trading?
Yes. Most prop firms offer accounts sized for both Micro and E-mini trading. Smaller evaluation accounts ($25K-$50K) are typically calibrated for micro contracts with maximum position sizes of 3-5 MES/MNQ. Larger funded accounts ($100K+) allow E-mini trading with larger position allowances.
Are commissions higher on Micro contracts relative to the contract value?
Yes. A typical round-trip commission of $0.50-$1.00 on MES represents 40-80% of one tick’s value ($1.25). On ES, a $3.50-$5.00 commission represents 28-40% of one tick ($12.50). This makes very short-term scalping (1-3 tick targets) less viable on Micro contracts. For strategies targeting 10+ ticks, the relative cost difference is manageable.
Risk Disclaimer: Trading involves substantial risk of loss. Past performance is not indicative of future results. See our full risk disclaimer.