Forex Rebate Calculator: Estimate Cashback per Lot

Most traders underestimate how much they can recover via rebates because they don't calculate fees in money terms.

This guide gives a simple formula to estimate monthly cashback before you connect a broker account.

Step 1: Define Your Inputs

Use these numbers:

• average lots per trade;
• number of trades per day;
• number of trading days per month;
• commission per lot (round turn);
• average spread cost in money terms;
• expected rebate rate (%).

Step 2: Compute Monthly Gross Cost

monthly_lots = lots_per_trade * trades_per_day * trading_days
monthly_cost = monthly_lots * (commission_per_lot + spread_cost_per_lot)

This is your total monthly trading cost before cashback.

Step 3: Apply Rebate Rate

monthly_rebate = monthly_cost * rebate_rate

Where rebate_rate is decimal form:

• 40% => 0.40
• 50% => 0.50

Interactive Calculator

Use this widget to test your own assumptions and compare scenarios before choosing a broker account route.

Worked Example

Assume:

• 0.8 lot average trade size
• 12 trades/day
• 22 days/month
• $7 commission per lot
• $5 spread-equivalent cost per lot
• 45% rebate

Then:

monthly_lots = 0.8 * 12 * 22 = 211.2
monthly_cost = 211.2 * (7 + 5) = 2534.4
monthly_rebate = 2534.4 * 0.45 = 1140.48

Estimated cashback: $1,140.48 per month.

Why This Changes Strategy Decisions

When you calculate effective costs, you can make better decisions about:

• broker selection;
• account type (raw vs standard);
• strategy frequency;
• target hold time.

For scalpers and algo traders, even a 1-2 USD difference per lot compounds fast.

Common Calculation Errors

Ignoring Spread Cost

Many traders calculate only commission and miss the spread impact.

Using Unrealistic Volume

Use actual executed average lots, not your intended position size.

Forgetting Eligibility Rules

Rebates typically apply only to accounts registered via a referral link, so base calculations on the referral rate.

Practical Workflow

1. Estimate volume for the next 30 days.
2. Build three scenarios: conservative, base, aggressive.
3. Compare rebate output across 2-3 brokers.
4. Connect the best-fit account with your chosen rebate provider.
5. Compare real payouts vs forecast and refine assumptions.

Conclusion

A rebate calculator turns cashback from marketing language into measurable cash-flow.

If you trade frequently, calculate expected rebate before choosing a broker account route. The right setup can materially improve net performance without changing your strategy logic.