TopOneFutures Maximum Contract Limits by Account

Position sizing is where most prop traders actually fail, not strategy. You can have a great setup and still breach an account simply by trading too many contracts.
That’s why TopOneFutures enforces hard maximum contract limits per account size — and why understanding these limits is non-negotiable if you want to stay compliant, scale safely, and avoid instant breaches.

In this guide, I’ll break down exactly how max contract limits work at TopOneFutures, what minis vs. micros really mean in practice, how combinations are calculated, and why Micro Bitcoin Futures (MBT) follow a completely different rule set. This is about controlling risk before the market does it for you.

Quick heads-up: This article is based on my real experience with TopOneFutures and the info available when I published/updated this. Things change in prop trading — rules, payouts, promos, all of it.

For the absolute latest, check TopOneFutures website or their help center.

Maximum Contract Rules at Top One Futures — The Framework

TopOneFutures sets fixed maximum contract caps based on your funded account size.

These limits are:

• absolute (not guidelines)
• enforced at the platform level
• checked in real time
• applied per account, not per trader

If you exceed them — even briefly — your account can be immediately breached.

Maximum Allowed Contracts by Account Size

Here’s the official contract cap structure.

These are hard ceilings, not targets. You are allowed to trade up to these limits — not required to.

What “Max Contracts” Actually Means

The max contracts rule defines the largest position you are allowed to hold at any one time.

Key points:

• it applies to open positions, not total trades per day
• it includes all contracts in the same direction
• it is checked in real time
• partial fills still count toward the total

If your position size exceeds the allowed maximum — even momentarily — the system can trigger a breach.

Minis vs. Micros: How the Conversion Works

Understanding minis and micros is critical.

• 1 mini contract = 10 micro contracts
• Micros allow finer position sizing
• Minis amplify both gains and losses quickly

Example: $50K Account

With a $50,000 account, you can trade:

• up to 4 minis, or
• up to 40 micros, or
• any combination that equals the same exposure

The system looks at total exposure, not how you split it.

Why These Limits Exist (Risk, Not Revenue)

Max contract limits are not arbitrary. They exist to:

• cap downside risk relative to account size
• prevent all-in style trading
• enforce consistent position sizing
• protect the firm from correlated blow-ups
• protect traders from their worst impulses

Without these limits, drawdown rules alone wouldn’t be enough — a single oversized trade could wipe an account instantly.

Common Ways Traders Accidentally Break Contract Limits

Most violations are not intentional.

1. Scaling In Without Recalculating

Adding to a position incrementally can push you over the limit if you don’t track total exposure.

2. Forgetting Existing Open Contracts

Opening a new trade without closing or reducing an earlier one can exceed the cap.

3. Copy Trading Without Size Sync

Copying from a larger account into a smaller one often breaks contract limits immediately.

4. Platform Defaults Set Too High

Some platforms remember your last order size — which can be dangerous if you switch accounts.

Special Rule: Micro Bitcoin Futures (MBT)

Crypto futures behave very differently from traditional futures — and TopOneFutures treats them accordingly.

Separate Max Contract Limits for MBT

Why MBT Has Separate Limits

Micro Bitcoin Futures:

• move faster than most futures markets
• experience sharp, irregular volatility
• gap aggressively during liquidity shifts

Applying standard micro limits would expose traders to disproportionate risk, so MBT contracts are capped independently.

Important:

• MBT limits do not stack with other micros
• exceeding MBT caps triggers the same enforcement as other limits

Enforcement: What Happens If You Exceed Max Contracts?

Contract limits are enforced automatically.

If you exceed them:

• the system may immediately breach the account
• positions may be force-closed
• the account can be permanently closed
• no refund is issued
• appeals are not accepted

There is no warning popup and no grace period.

Strategic Position Sizing: How Pros Use These Limits

Experienced traders don’t trade at the max.

They:

• operate at 30–60% of allowed size
• leave room to manage trades
• reduce stress and drawdown pressure
• maintain flexibility across sessions

Max contracts define the ceiling, not the optimal operating range.

Contract Limits vs. Drawdown Rules

These two rules work together:

• contract limits control position size
• drawdown rules control account equity

Violating either one ends the account.

You cannot “outsmart” one with the other.

Final Takeaway

TopOneFutures’ max contract limits are not there to restrict good traders — they’re there to eliminate bad risk behavior.

If you:

• size intentionally
• understand mini vs. micro exposure
• respect MBT’s unique risk profile
• avoid trading at the ceiling

…these rules will never be a problem.

Ignore them, and even a winning trade can end your account.

In prop trading, survival comes before profit — and max contract limits are part of that survival framework.

Your Next Steps

‍👉 Start Trading at TopOneFutures Today

‍👉 Read My Full TopOneFutures Review

‍👉 Start earning besides Trading with TopOneFutures Affiliate Program

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