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Promotions & contribution

Promotion Discount & Required Volume Calculator

Calculate the whole promotional units sufficient to preserve baseline contribution after discounting every sale and paying a fixed campaign cost.

42 / TEST PROMOTIONAL VOLUME

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INPUT GROUP 01

Baseline and promotion

Check the assumptions before acting on a result.

Read the method and example

YOUR CALCULATION

Find whole promotional units sufficient to preserve baseline contribution.

Discounted price per unit

$90.00

Discounted contribution per unit

$30.00

Baseline period contribution

$40,000.00

Units sufficient to preserve baseline

1,400

Additional units versus baseline

400

Expected promotional contribution after campaign cost

$43,000.00

Change from baseline contribution

$3,000.00

Keep the calculation

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Illustrative inputs loaded. Replace them with your own assumptions.

How the promotion discount & required volume calculator works

Discounted price is regular price times one minus the discount percentage. Subtract unchanged variable cost to get promotional contribution per unit. Baseline contribution is original units times regular price less unit cost.

The sufficient whole-unit volume is the ceiling of baseline contribution plus fixed promotion cost, divided by promotional contribution per unit. It uses unrounded unit economics and can be conservative after monetary display rounding. Nonpositive promotional contribution cannot meet a positive requirement.

The expected-volume scenario deducts promotion cost once and compares with baseline contribution. Fixed operating overhead is unchanged and excluded from both sides. No demand elasticity, repeat purchase, customer mix or actual volume response is predicted.

Worked example

A $100 regular price and $60 variable cost contribute $40 on each of 1,000 baseline units, or $40,000. A 10% discount leaves $30 contribution per unit. Including $2,000 promotion cost requires 1,400 units to preserve baseline contribution. At 1,500 promotional units, contribution after promotion cost is $43,000, or $3,000 above baseline.

Sources and assumptions

The source material explains the underlying calculation or pricing structure. Entered prices, costs, schedules and scenario choices are your assumptions; this tool does not obtain supplier quotes or predict actual results.

Calculation methods, testing and sources · Practical calculation guides