Act on the result
Add the required price buffer to the current price floor or explicitly accept the lower adverse-scenario margin.
Educational only: Business decision support, not accounting, tax or legal advice.
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Update policy: Reviewed when formulas or official dependencies change.
Scope: Market-neutral small-business planning using your own assumptions.
What this planner helps you decide
Best for
Cross-border sellers protecting margin against FX, duties and payment leakage.
Outputs
Buffered price, current contribution, adverse contribution and required price buffer.
Start here
Enter the current and adverse exchange rates explicitly; no rate is forecast.
Use a different tool when: Do not use this to allocate landed costs and protect margin under adverse FX; use International Landed Cost & Margin Planner for that decision. Use this tool to set a price buffer for adverse currency movement.
Commerce & operations
Cross-border Price Buffer: buffered price
Buffered price, current contribution, adverse contribution and required price buffer.
Amounts use the same currency as your inputs. No currency conversion is performed.
Cross-border Price Buffer
Choose a price buffer for currency uncertainty while preserving target margin.
Your numbers stay in this browser
Current unit cost in the selected domestic currency. Enter the amount on one consistent ex-tax market-currency basis.
Current entered exchange-rate index.
Adverse scenario using the same quote basis.
Share exposed to currency movement.
Margin protected by the buffer.
Decision result
Each output is bound to its registered ecommerce engine formula.
- Current Unit Cost
- 50.00
- Adverse Unit Cost
- 53.50
- Current Required Price
- 76.92
- Buffered Required Price
- 82.31
- Required price buffer
- 5.38
Scenario comparison
Each row names the assumption axis changed from the baseline.
ScenarioResultDifference
Current scenario5.38Baseline
Lower Adverse exchange rate2.42-2.96
Higher Adverse exchange rate8.352.96
Save these results, change an input, then compare the updated figures with this baseline.
The baseline is temporary in this tab and is not added to shared scenario links or generated reports.
Calculation details
View calculation detailsView the formulas and inputs used for these results.
Current Unit Cost
Current Unit Cost
domestic share + current foreign share50.00Result50.00
Reports money for the entered planning period using the declared ex-tax cost and revenue basis. The engine retains full precision; presentation rounding does not feed calculation.
Cross-border Price Buffer Planner formulas →Inputs used by these formula steps
- Current Unit CostBase Domestic Unit Cost
- 50
- Current Unit CostCurrent Exchange Rate
- 1.5
- Current Unit CostAdverse Exchange Rate
- 1.65
- Current Unit CostForeign Cost Share
- 0.7
- Current Unit CostTarget Margin Rate
- 0.35
Adverse Unit Cost
Adverse Unit Cost
domestic share + foreign share × adverse/current FX53.50Result53.50
Reports money for the entered planning period using the declared ex-tax cost and revenue basis. The engine retains full precision; presentation rounding does not feed calculation.
Cross-border Price Buffer Planner formulas →Inputs used by these formula steps
- Adverse Unit CostBase Domestic Unit Cost
- 50
- Adverse Unit CostCurrent Exchange Rate
- 1.5
- Adverse Unit CostAdverse Exchange Rate
- 1.65
- Adverse Unit CostForeign Cost Share
- 0.7
- Adverse Unit CostTarget Margin Rate
- 0.35
Current Required Price
Current Required Price
current cost / (1 − margin)76.92Result76.92
Reports money for the entered planning period using the declared ex-tax cost and revenue basis. The engine retains full precision; presentation rounding does not feed calculation.
Cross-border Price Buffer Planner formulas →Inputs used by these formula steps
- Current Required PriceBase Domestic Unit Cost
- 50
- Current Required PriceCurrent Exchange Rate
- 1.5
- Current Required PriceAdverse Exchange Rate
- 1.65
- Current Required PriceForeign Cost Share
- 0.7
- Current Required PriceTarget Margin Rate
- 0.35
Buffered Required Price
Buffered Required Price
adverse cost / (1 − margin)82.31Result82.31
Reports money for the entered planning period using the declared ex-tax cost and revenue basis. The engine retains full precision; presentation rounding does not feed calculation.
Cross-border Price Buffer Planner formulas →Inputs used by these formula steps
- Buffered Required PriceBase Domestic Unit Cost
- 50
- Buffered Required PriceCurrent Exchange Rate
- 1.5
- Buffered Required PriceAdverse Exchange Rate
- 1.65
- Buffered Required PriceForeign Cost Share
- 0.7
- Buffered Required PriceTarget Margin Rate
- 0.35
Required price buffer
Price Buffer
buffered price − current required price5.38Result5.38
Reports money for the entered planning period using the declared ex-tax cost and revenue basis. The engine retains full precision; presentation rounding does not feed calculation.
Cross-border Price Buffer Planner formulas →Inputs used by these formula steps
- Price BufferBase Domestic Unit Cost
- 50
- Price BufferCurrent Exchange Rate
- 1.5
- Price BufferAdverse Exchange Rate
- 1.65
- Price BufferForeign Cost Share
- 0.7
- Price BufferTarget Margin Rate
- 0.35
Inputs used
- Base domestic unit cost
- 50.00
- Current exchange rate
- 1.5
- Adverse exchange rate
- 1.65
- Foreign cost share
- 70%
- Target margin
- 35%
Open this calculator with preset values
This calculator supports documented, shareable scenario URLs. Compatible assistants and applications can construct links using the parameters below.
Scenario links contain only allowlisted numeric and closed-choice inputs shown in the URL; Margin101 excludes free text and identifying fields. Anyone you share the URL with can read those numbers, so do not include private or identifying data.
| Parameter | Meaning | Unit | Allowed values | Presence | Default |
|---|---|---|---|---|---|
| adverseExchangeRate | Adverse scenario using the same quote basis. | domestic currency units/foreign currency unit under adverse scenario | 0.0001 to 10000 | Required | 1.65 |
| baseDomesticUnitCost | Current unit cost in the selected domestic currency. Enter the amount on one consistent ex-tax market-currency basis. | currency units/planning period, ex tax | 0 to 100000000 | Required | 50 |
| currentExchangeRate | Current entered exchange-rate index. | domestic currency units/foreign currency unit at current rate | 0.0001 to 10000 | Required | 1.5 |
| foreignCostShare | Share exposed to currency movement. | proportion of base domestic unit cost exposed to foreign currency | 0 to 1 | Required | 0.7 |
| targetMarginRate | Margin protected by the buffer. | proportion of selling price retained as contribution | 0 to 1 | Required | 0.35 |
Cross-border Price Buffer: buffered price
The required price buffer isolates the price protection needed for the entered adverse exchange rate and foreign-cost exposure.
Formula summary
- Primary formula
- price buffer = adverse required price − current required price
Data used here
- The estimate uses your inputs and the general business formula documented in the methodology.
Decision checks
Stress-test the decision
Retest the adverse exchange rate in domestic currency units per foreign currency unit and foreign cost share as a percentage of unit cost.
When this estimate can be misleading
- All provider fees, exchange rates, returns, demand and operating rates are user-entered scenarios.
- Use one consistent ex-tax currency and planning period across compared inputs.
- This is educational business decision support, not accounting, tax, legal or financial advice.
- The required price buffer isolates the price protection needed for the entered adverse exchange rate and foreign-cost exposure.
Educational estimate, not advice. See all assumptions & limitations →
Related reading
Guides to interpret the decision and its assumptions.
- Ecommerce Profitability: A Per-Order Decision Map
Build contribution per order, then test fees, shipping, returns, acquisition, fulfilment and product mix one decision at a time.
Read guide
Frequently asked questions
How do I set a price buffer for adverse currency movement?
Add the required price buffer to the current price floor or explicitly accept the lower adverse-scenario margin.
Which planning assumptions should I stress-test?
Compare a plausible alternative scenario and verify the decision-critical assumption that changes the plan most.