Prop Firm Account Size Finder — Which Funded Account Fits Your Trading?
Choosing the wrong account size is how confident traders set themselves up to fail — too large creates psychological pressure that distorts their trading. Enter your risk per trade %, desired monthly income, average monthly return, and payout split to find which account size ($10K–$200K) matches your actual trading style. Too small limits income; too large turns normal losses into emotional events.
Updated · Reviewed by Foysal Mostafa
Be conservative — use 3–5%, not your best month
FTMO = 80% | Most firms = 80–90%
Recommended Account Size
Best Fit Account
$50K
Minimum calculated: $50,000
$10K
$400/mo income
$100 risk/trade at 1%
$25K
$1,000/mo income
$250 risk/trade at 1%
$50K ← Best Fit
$2,000/mo income
$500 risk/trade at 1%
$100K
$4,000/mo income
$1,000 risk/trade at 1%
$150K
$6,000/mo income
$1,500 risk/trade at 1%
$200K
$8,000/mo income
$2,000 risk/trade at 1%
Why Use the Account Size Finder Calculator?
Choosing an account that's too large increases psychological pressure and failure rates. Too small limits meaningful income potential. This calculator matches your actual trading stats to the right account size — one where your risk per trade feels comfortable and your monthly income target is achievable at sustainable risk levels.
Formula Used
Required Account = Monthly Income Target ÷ (Monthly Return % × Payout %) | Max Risk Per Trade = Account × Risk % Per TradeWorked Example
Target monthly income: $1,500. Average monthly return: 5%. FTMO payout: 80%. Required account = ($1,500 ÷ 0.80) ÷ 0.05 = $1,875 ÷ 0.05 = $37,500. Choose a $50K account for comfortable buffer. At $50K, 5% = $2,500, payout = $2,000 — $500 above target. At 1% risk, each trade risks $500 — manageable. A $100K account doubles income but doubles the psychological weight of every losing trade.
How to Use the Account Size Finder Calculator — Step by Step
- 1
Enter your desired monthly income
Input how much monthly income you want to generate from your funded account after payout split.
- 2
Enter your average monthly return %
Input your average monthly return based on your trading history. Be conservative — use 3–5% not your best month.
- 3
Enter payout split
Most prop firms pay 80–90% of profits to the trader. Enter your firm payout percentage.
- 4
Enter risk per trade %
Input the percentage of account you risk per trade. Higher risk = faster profits but higher drawdown risk.
- 5
Read your recommended account size
The calculator recommends an account size, estimates monthly income, and shows risk per trade in dollars at that account size.
What Your Account Size Finder Calculator Results Mean
Recommended Account Size
The minimum account size where your monthly return percentage generates your target income at your prop firm's payout ratio. Choose the next account tier above this number for comfortable margin.
Monthly Income at Recommended Size
The expected monthly take-home income at your average monthly return and payout split. This confirms the recommended account size achieves your income goal without requiring unsustainable returns.
Risk per Trade in Dollars
Your 1% risk per trade in dollars at the recommended account size. If this number feels emotionally difficult to lose, start at a smaller account until you are comfortable with the dollar amounts involved.
Account Size Finder Calculator — Frequently Asked Questions
Q.What prop firm account size should I start with?
Start with the account size where 1% risk per trade equals an amount you are comfortable losing. For a $25K account, 1% = $250 per trade. For a $100K account, 1% = $1,000 per trade. If losing $1,000 on a trade would cause you to break your rules or revenge trade, start with $25K or $50K.
Q.Is a larger prop firm account always better?
No — larger accounts have the same drawdown percentages but much larger dollar amounts at stake. Psychological pressure increases with account size. Start at a size where you trade your system without emotion, then scale up after consistent results. Many traders perform better on $50K than $200K due to reduced pressure.
Q.How much can I earn on a $100K FTMO account?
With FTMO at 80% payout: If you earn 5% monthly ($5,000), you receive $4,000 (80%). At 10% monthly ($10,000), you receive $8,000. Realistic: experienced funded traders average 3–7% monthly on their accounts. At 5% on $100K = $4,000/month take-home. Scale up accounts as consistency is proven.
Q.Should I run multiple prop firm accounts?
Yes — diversifying across 2–3 prop firms at smaller sizes is often better than one giant account. If you blow one, you still have income from others. Firms like FTMO allow multiple accounts. Many funded traders run $50K accounts at 3 different firms simultaneously for $150K total buying power with diversified drawdown risk.
Q.What monthly return is realistic for a funded trader?
Realistic monthly returns for consistently funded traders: 3–5% (conservative, high pass rate), 5–10% (aggressive, higher drawdown risk), 10%+ (very aggressive, frequent account failures). Most experienced funded traders target 4–6% monthly — enough for good income without excessive risk. An honest assessment of your backtested returns is the best starting point.
About the Author
Forex Trader & Software Developer · Founder, TradeCalc
Active forex trader since 2019, specializing in risk management and systematic position sizing. Built TradeCalc to replace manual spreadsheets used in live trading. Every calculator is cross-verified against broker platforms before publishing.
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