MES vs ES — Micro E-mini vs E-mini S&P 500 Head-to-Head Comparison

By Diego · Published 2026-06-04 · Last reviewed 2026-06-04

Side-by-side spec comparison

Where the 1:10 ratio holds

Contract notional value: MES multiplier is $5/point; ES is $50/point. At S&P 500 = 5,200: MES notional = $26,000; ES notional = $260,000. Holding 10 MES contracts equals 1 ES contract in dollar exposure.

Tick value: MES = $1.25; ES = $12.50. A 10-point S&P 500 move is worth $50 on one MES and $500 on one ES. The ratio is exactly 1:10.

Intraday margin (NinjaTrader, 11/13/2025): MES $50 vs ES $500. The 1:10 ratio holds here, meaning the margin per dollar of exposure is similar between the two contracts at this broker.

Where the 1:10 ratio breaks down: commissions

Commission ratios between micro and full-size contracts run approximately 3:1, not 10:1. Verified figures:

The pattern is consistent: micro commissions are roughly 1/3 of full-size commissions, not 1/10. This is because exchange, clearing, and NFA fee components are charged per contract regardless of contract size, and those fixed-per-contract fees are the same on a micro as on the full-size.

The per-tick cost-of-trading math

The critical question for scalpers and frequent intraday traders is: how many ticks must a trade move in your favour before it breaks even after commissions? This is the per-tick transaction cost:

Break-even ticks = round-trip commission ÷ tick value

Reading this table: at NinjaTrader Free, an MES trade must move 1.52 ticks in the trader's favour to break even, versus 0.46 ticks for ES. ES's break-even is 3.3 times lower in tick terms. At IBKR, the same dynamic holds: MES needs 0.40 ticks, ES needs 0.14 ticks (before exchange fees).

This matters most for scalpers and short-duration intraday traders. A strategy targeting 2-3 tick moves captures a much smaller fraction of the target on MES (after commission) than on ES. Strategies targeting 10+ tick moves are less sensitive to this difference.

Who should trade MES

• Newer futures traders learning execution mechanics at lower dollar risk per tick.
• Strategy testers running a system at 1/10 scale before committing to ES size.
• Traders with limited capital who want S&P 500 futures exposure but cannot fund the ES margin requirement.
• Position builders who want to scale into or out of positions in smaller increments than one full ES contract.

Who should trade ES

• Established intraday traders with sufficient capital who want lower per-tick transaction costs.
• Scalpers and high-frequency intraday traders for whom the 1.52-tick vs 0.46-tick break-even difference at NinjaTrader is material to the strategy's edge.
• Traders with strategies targeting small moves (1-5 ticks) where the commission ratio matters most.

Frequently asked questions

What is the main difference between MES and ES?

MES (Micro E-mini S&P 500) is exactly one-tenth the size of ES (E-mini S&P 500) in contract notional value, tick value, and typical intraday margin. MES tick value is $1.25; ES tick value is $12.50. MES intraday margin at NinjaTrader is $50; ES is $500 (as of 11/13/2025). However, per-side commissions are NOT 1:10 — commission ratios run approximately 3:1, making each tick more expensive to trade on MES.

Is the MES commission 1/10 of the ES commission?

No. NinjaTrader Free-plan commission is $0.95 per side for MES and $2.88 per side for ES (as of 11/13/2025) — a ratio of about 3:1, not 10:1. IBKR charges $0.25 for MES and $0.85 for ES (as of 2026-06) — also about 3.4:1. Because the contract is 10x smaller but commissions are only 3x lower, each tick costs more to trade on MES.

Which contract has a lower per-tick cost of trading, MES or ES?

ES has a lower per-tick cost of trading. At NinjaTrader Free: MES round-trip $1.90 / $1.25 tick value = 1.52 ticks to break even. ES round-trip $5.76 / $12.50 tick value = 0.46 ticks to break even. The ES break-even is about 3.3x lower in tick terms, meaning a scalping strategy reaches profitability sooner on ES once capital allows.

What is MES intraday margin vs ES at NinjaTrader?

NinjaTrader's MES intraday margin is $50 and ES is $500, maintaining the 1:10 ratio as of 11/13/2025. NinjaTrader can raise these in real time during volatile sessions.

Who should trade MES vs ES?

MES suits traders learning futures mechanics with limited capital, those testing a new strategy at reduced size before scaling, or anyone who wants to add partial positions to ES exposure without the full-size contract. ES suits traders with sufficient capital who want lower per-tick transaction costs and who no longer need the smaller contract size as a training constraint.

Are MES and ES on the same exchange?

Yes. Both MES and ES trade on the CME's Globex electronic trading platform. They share the same underlying S&P 500 index, the same trading hours (Sunday 5:00 PM Central through Friday 4:00 PM Central), and the same quarterly contract expiration cycle.

Methodology & sources

Spec values are exchange-defined and confirmed via AMP Futures and NinjaTrader contract pages. Commission and margin figures are from NinjaTrader's published PDF rate sheet (stamped 11/13/2025) and the IBKR futures commissions page (2026-06). Spread, liquidity, and order-book claims were not included because they were not verified in the research pass underlying this page.

• NinjaTrader Futures Commissions & Intraday Margins (PDF) — NinjaTrader, stamped 11/13/2025
• Interactive Brokers Futures Commissions — IBKR, as of 2026-06
• IBKR Micro Futures Comparison — Interactive Brokers