Risk-Based Stop Boundary

Reverse Stop-Loss Calculator

Enter your capital and maximum acceptable loss to calculate the widest mathematical stop distance available for your selected quantity.

Risk-first calculation
Supports multiple lots
Includes slippage and charges
Editable contract size

Enter your risk limits

LotLogic will subtract estimated trading friction before calculating how much price movement your risk budget can support.

How do you define risk?

Trading capital Capital used to determine the selected risk budget.

Maximum risk percentage Percentage of capital you accept losing.

Stop direction

Which price movement triggers the stop?

Common for option buyers and other long positions.

Contract and quantity

Instrument Presets are editable and must be verified before use.

Lot size Quantity contained in one contract lot.

Number of lots Total lots for which the stop boundary is calculated.

Entry price Price from which the stop distance will be measured.

Trading friction

Expected slippage points Adverse execution movement allowed for each unit.

Estimated charges per lot Estimated total round-trip cost for each lot.

Your stop boundary will appear here

Enter your risk budget, quantity, entry price, and estimated costs to calculate the maximum stop distance.

Stop boundary calculated

Maximum stop distance calculated

This is the widest mathematical distance permitted by your entered risk budget.

Maximum stop distance

0 points

Mathematical stop price

₹0

Risk budget

₹0

Total quantity

Risk available for price movement

₹0

Estimated risk at boundary

₹0

Entry price ₹0

Maximum stop percentage 0%

Total slippage allowance ₹0

Total estimated charges ₹0

Total non-price costs ₹0

Selected position 1 lot × 65

Stop direction Price falls from entry

Your entire risk budget remains available for price movement.

Important: This is a mathematical boundary, not a recommended stop-loss. Actual losses can be higher because execution at the calculated price is not guaranteed.

Calculation Method

How the reverse calculation works

Calculate the risk budget

LotLogic converts your percentage or fixed amount into the maximum rupee loss entered by you.

Subtract costs first

Estimated slippage and charges are removed before any risk is allocated to price movement.

Divide by total quantity

The remaining price-risk amount is divided by lot size multiplied by the number of lots.

Worked Example

₹500 risk budget with one 65-quantity lot

Assume an entry price of ₹20, one lot containing 65 quantity, with no estimated slippage or charges.

Risk budget ₹500
Total quantity 65
Maximum stop distance ₹500 ÷ 65 = 7.6923 points
Downward stop price ₹20 − ₹7.6923 = ₹12.3077

A calculated boundary is not guaranteed protection

A stop order may execute beyond the entered or calculated level during gaps, illiquidity, rapid market movement, or technical disruption. Upward-stop calculations for short positions do not represent defined maximum risk.