Act on the result
Compare the minimum batch with demand, storage and cash constraints before accepting the order.
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
Production and project businesses setting a whole minimum batch from setup and unit economics.
Outputs
Unit contribution, break-even batch, target-contribution batch and capacity feasibility.
Start here
Enter one setup event, unit price and variable cost before applying whole-unit and capacity constraints.
Use a different tool when: Do not use this to choose the highest-contribution use of a constrained operating resource; use Capacity Constraint Profit Planner for that decision. Use this tool to find the minimum production batch that recovers setup cost and protects the entered contribution.
Profit & break-even
Minimum Batch Size: unit contribution
Unit contribution, break-even batch, target-contribution batch and capacity feasibility.
Amounts use the same currency as your inputs. No currency conversion is performed.
Minimum Profitable Batch Size
Find the whole-unit batch needed to cover setup cost and a target batch contribution, then test whether entered capacity can deliver it.
Your numbers stay in this browser
Enter fixed cost incurred once for the batch. Use one consistent ex-tax currency basis.
Enter revenue earned for one unit. Use one consistent ex-tax currency basis.
Enter cost that changes with each additional unit. Use one consistent ex-tax currency basis.
Enter contribution required after recovering setup cost. Use one consistent ex-tax currency basis.
Enter the whole units that can be produced in one batch.
Decision result
Review the operating threshold and incremental comparison on the same entered capacity, cost and demand basis.
- Unit contribution
- 12.00
- Minimum profitable batch size
- 125 units
- Contribution at minimum batch
- 500.00
- Batch capacity status
- Capacity is sufficient
Scenario comparison
Each row names the assumption axis changed from the baseline.
ScenarioResultDifference
Entered scenario125 unitsBaseline
Lower Target batch contribution121 units-4 units
Higher Target batch contribution130 units5 units
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.
Unit contribution
Unit contribution
selling price per unit − variable cost per unit12.00Result12.00
Uses the exact shared engine result and only the entered market-neutral operating assumptions. The engine retains raw precision; display formatting does not feed calculation.
Minimum Profitable Batch Size Planner formulas →Inputs used by these formula steps
- Unit contributionSetup Cost
- 1,000
- Unit contributionUnit Selling Price
- 20
- Unit contributionUnit Variable Cost
- 8
- Unit contributionTarget Batch Contribution
- 500
- Unit contributionMaximum Capacity Units
- 200
Minimum profitable batch size
Minimum profitable batch size
ceiling((batch setup cost + target batch contribution) / positive unit contribution)125 unitsResult125 units
Uses the exact shared engine result and only the entered market-neutral operating assumptions. The engine retains raw precision; display formatting does not feed calculation.
Minimum Profitable Batch Size Planner formulas →Inputs used by these formula steps
- Minimum profitable batch sizeSetup Cost
- 1,000
- Minimum profitable batch sizeUnit Selling Price
- 20
- Minimum profitable batch sizeUnit Variable Cost
- 8
- Minimum profitable batch sizeTarget Batch Contribution
- 500
- Minimum profitable batch sizeMaximum Capacity Units
- 200
Contribution at minimum batch
Contribution at minimum batch
minimum units × unit contribution − batch setup cost500.00Result500.00
Uses the exact shared engine result and only the entered market-neutral operating assumptions. The engine retains raw precision; display formatting does not feed calculation.
Minimum Profitable Batch Size Planner formulas →Inputs used by these formula steps
- Contribution at minimum batchSetup Cost
- 1,000
- Contribution at minimum batchUnit Selling Price
- 20
- Contribution at minimum batchUnit Variable Cost
- 8
- Contribution at minimum batchTarget Batch Contribution
- 500
- Contribution at minimum batchMaximum Capacity Units
- 200
Batch capacity status
Batch capacity status
minimum units ≤ maximum batch capacitytrueResultCapacity is sufficient
Uses the exact shared engine result and only the entered market-neutral operating assumptions.
Minimum Profitable Batch Size Planner formulas →Inputs used by these formula steps
- Batch capacity statusSetup Cost
- 1,000
- Batch capacity statusUnit Selling Price
- 20
- Batch capacity statusUnit Variable Cost
- 8
- Batch capacity statusTarget Batch Contribution
- 500
- Batch capacity statusMaximum Capacity Units
- 200
Inputs used
- Batch setup cost
- 1,000
- Selling price per unit
- 20
- Variable cost per unit
- 8
- Target batch contribution
- 500
- Maximum batch capacity
- 200
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 |
|---|---|---|---|---|---|
| maximumCapacityUnits | Enter the whole units that can be produced in one batch. | units/batch | 0 to 100000000 | Required | 200 |
| setupCost | Enter fixed cost incurred once for the batch. Use one consistent ex-tax currency basis. | currency units/batch, ex tax | 0 to 10000000 | Required | 1000 |
| targetBatchContribution | Enter contribution required after recovering setup cost. Use one consistent ex-tax currency basis. | currency units/batch, ex tax | 0 to 10000000 | Required | 500 |
| unitSellingPrice | Enter revenue earned for one unit. Use one consistent ex-tax currency basis. | currency units/unit, ex tax | 0 to 10000000 | Required | 20 |
| unitVariableCost | Enter cost that changes with each additional unit. Use one consistent ex-tax currency basis. | currency units/unit, ex tax | 0 to 10000000 | Required | 8 |
Minimum Batch Size: unit contribution
Use whole-batch thresholds and capacity feasibility together; fractional or infeasible batches are not operational decisions.
Formula summary
- Primary formula
- ceiling((batch setup cost + target batch contribution) / positive unit contribution).
Data used here
- The estimate uses your inputs and the general business formula documented in the methodology.
Decision checks
Stress-test the decision
Retest higher setup cost, lower unit contribution and tighter capacity.
When this estimate can be misleading
- Volumes, rates, capacity, time, costs and contribution are your records or scenarios; no benchmark or demand forecast is embedded.
- Keep all money and operating records on one consistent ex-tax basis and decision period.
- Incremental comparisons exclude disclosed sunk cost and do not guarantee demand, delivery capacity or a commercial outcome.
- This is educational business decision support, not accounting, tax, legal or financial advice.
- Use whole-batch thresholds and capacity feasibility together; fractional or infeasible batches are not operational decisions.
Educational estimate, not advice. See all assumptions & limitations →
Related reading
Guides to interpret the decision and its assumptions.
- Small-Batch Manufacturing Economics
Reconcile setup cost, batch quantity, yield and usable output before selecting a minimum production batch.
Read guide
Frequently asked questions
How do I find the minimum production batch that recovers setup cost and protects the entered contribution?
Compare the minimum batch with demand, storage and cash constraints before accepting the order.
Which planning assumptions should I stress-test?
Compare a plausible alternative scenario and verify the decision-critical assumption that changes the plan most.