Deriv Synthetic Indices Lot Sizes Guide (V75, Boom & Crash, Step Index)

Lot size mistakes are one of the biggest killers of small accounts on Deriv.

Unlike forex, synthetic indices have different minimum and maximum lot sizes, and Deriv doesn’t use pips — it uses point-based movement pricing. That means 0.01 on V75 and 0.01 on Boom 1000 aren’t the same thing.

In this post, I’ll break down:

• In this guide, I’ll show you:
• The exact minimum and maximum lot sizes for each index
• How much money 0.001 lot is worth
• What lot size to use based on your account size
• Common mistakes and how to avoid them
  

Whether you’re trading V75, Boom 1000, or Step Index — this post will help you avoid painful errors that I encountered and trade smarter.

🧠 What Is a Lot Size on Deriv MT5?

A lot size on Deriv simply controls how much money you’re risking per point movement.
Smaller lot size = lower risk. Bigger lot = higher profit/loss per move.

But here’s the thing — you can’t just use any lot size you want. Deriv has minimum lot size rules for each synthetic index.

📊 Minimum and Maximum Lot Sizes on Deriv Synthetic Indices

Synthetic Index	Lot Size Range
Volatility 75	0.001 – 1.00
Boom 1000	0.20 – 50.00
Crash 1000	0.20 – 50.00
Boom 500	0.20 – 50.00
Crash 500	0.20 – 50.00
Step Index	0.10 – 100.00
Volatility 10 / 25 / 100	0.001 – 1.00
Jump Indices	0.01 – 100.00

📌 Data verified as of 2025 — always check Deriv MT5 before placing trades.

💰 Suggested Lot Sizes for Small Accounts

From my experience, I believe these are the best lot sizes for various account sizes, they will allow you to risk a small amount of your capital per trade.

Index	Recommended Lot SizeFor Small Accounts
Volatility 75	0.001 – 0.003
Boom 1000 / Crash 1000	0.20 – 0.50
Boom 500 / Crash 500	0.20 – 0.50
Step Index	0.10 – 0.50
Volatility 10 / 25 / 100	0.001 – 0.005
Jump Indices	0.01 – 0.10

💵 What Does 0.001 Lot Size Mean in Dollars?

Here’s how to calculate your dollar risk:

Profit/Loss = (Points Moved) × 0.01 × Lot Size

Example:

• You trade 0.001 lot on Volatility 75
• It moves 1,000 points in your direction
• You make $0.01 × 1,000 × 0.001 = $10

Now reverse that if it goes against you.

📈 Best Lot Sizes Based on Account Size

Account Balance	Recommended Lot Size (V75)
$10 – $30	0.001
$50 – $100	0.002 – 0.003
$150 – $300	0.005 – 0.01
$500+	0.01+ (with risk controls)

💡 For Boom & Crash, stick to the minimum of 0.20 until you’re sure of your entries.

❌ Common Lot Size Mistakes (Don’t Do These)

• Ignoring minimum lot rules and getting “Invalid Volume” errors on MT5
• Trying to place 0.01 lot on V75 when your account is only $10
• Using forex-style lots (e.g. 0.10) on synthetic pairs
• Overleveraging Boom 1000 thinking it’s “slow” — it’s not

Watch Out When Switching Indices — Lot Size Doesn’t Reset

One mistake I’ve made (more than once) is forgetting to adjust the lot size when jumping between indices.

Let’s say you’re trading Boom 500 using 0.20 lots — no problem there, it moves slowly.
But then you switch to Volatility 75, and MT5 keeps your last lot size.

If you hit “Buy” on V75 with 0.20 still loaded… it’s game over. Your account can blow in seconds — no joke.

So always double-check your lot size every single time you change charts. That one slip can wipe out days of work.

📲 How to Set Lot Size on Deriv MT5

When placing a trade:

• Right-click on the chart or asset → New Order
• Enter your Volume (lot size) manually
• Always start with 0.001 if unsure — especially for high-volatility pairs

Tip: Save your preferred lot size in a trade template to avoid mistakes.

🔗 Related Guides You’ll Need

• How to Open a Deriv Synthetic Indices Account
• How to Withdraw from Deriv
• Best Strategies for Boom & Crash Indices
• Deriv Broker Review

🧠 Final Thoughts

The difference between blowing an account and growing it often comes down to lot size.

On Deriv, you need to think in point value — not pips.
Start small, understand how fast each index moves, and size your trades based on what your balance can handle.

Don’t risk $20 to make $2 — flip that logic.

FAQ's On Deriv Synthetic Indices Lot Sizes