Analysis & valuation
From break-even to target profit: a contribution margin calculator
A contribution margin calculator with cost-volume-profit analysis: owners add a target profit to price, variable cost and fixed costs, and see the units needed to hit it.
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How many units do I need to sell to hit a profit target?
Add the target profit to fixed costs and divide by the contribution margin per unit. With a $20 margin, $40,000 of fixed costs and a $20,000 profit goal, the business needs 3,000 units. The contribution margin ratio, margin divided by price, shows how much of each sales dollar covers costs and profit.
Annual planning and goal setting
Owners setting next year's goals want to translate a profit number into a sales target. Managers preparing budgets need the same arithmetic. The question usually comes in December or after a strategy meeting.
What the client types into a search box
“how many units do I need to sell to make a profit of”
How a client works through it
Enter price and variable cost
Per unit.
Enter fixed costs
For the period being planned.
Enter a target profit
The profit goal for the same period.
See the plan
Break-even, units for target, margin per unit and ratio.
What lands in your inbox
When a client asks your firm to review the result, the request arrives as a contact record with their inputs and results attached, by email and, on paid plans, by webhook to your CRM.
Received
Price, variable cost, fixed costs and the target show scale and ambition. A target far above current volume suggests growth plans needing financing or capacity; a low margin ratio suggests pricing work.
Margin ratio and target units
Contribution Margin Ratio shows the share of each sales dollar available for fixed costs and profit. Units for Target Profit adds the goal to fixed costs; Break-Even Units and Break-Even Revenue show the zero-profit point.
A 40% ratio means every $100 of sales contributes $40.
Results shown: Break-Even Units · Break-Even Revenue · Contribution Margin / Unit · Units for Target Profit · Contribution Margin Ratio.
A $50 product
Price $50, variable cost $30, margin $20 (a 40% ratio). Fixed costs of $40,000 need 2,000 units to break even. A $20,000 profit target needs ($40,000 + $20,000) ÷ $20 = 3,000 units, or $150,000 of sales.
Why CVP analysis belongs in an advisory offer
Target-profit planning turns the budget into a sales plan, which is the heart of advisory services for small businesses. Firms that help owners set and track targets build monthly relationships.
It's also a teaching tool: owners who understand contribution margin make better pricing and cost decisions.
Follow-ups this request opens
- Turn the profit target into a monthly sales plan
- Review pricing to improve the margin ratio
- Model capacity and hiring for the target volume
- Set up monthly tracking against the plan
What this calculator leaves out
- Constant price and costs across volume.
- Single product.
- Pre-tax profit.
- Fixed costs don't step up with capacity.
Platform disclaimer shown under the calculator: Estimates only. Assumes a constant price and variable cost per unit and fixed costs that do not change with volume.
Compliance note for firms
CVP outputs are planning estimates, not forecasts. If they're used in loan applications or investor materials, label assumptions clearly; CPA firms should consider professional standards for prospective financial information if they assemble such materials.
Not legal advice. See our disclaimer and the guide to compliance for client calculators.
Terms your client sees in the calculator
These definitions appear in the calculator's collapsible Definitions block, so clients don't have to call to ask what a label means.
- Contribution margin per unit
- The selling price per unit minus the variable cost per unit: what each sale contributes toward covering fixed costs and, after that, toward profit. At a $50 price and $30 variable cost, each unit contributes $20. Every other result in this calculator is built from this figure and total fixed costs.
- Break-even point
- The sales volume at which total revenue equals total costs, so profit is zero. In units it is total fixed costs divided by the contribution margin per unit, rounded up to a whole unit. Every unit sold beyond it adds its full contribution margin to profit; every unit short of it leaves part of fixed costs uncovered.
- Break-even revenue
- The dollar sales needed to break even: break-even units times the selling price, or equivalently fixed costs divided by the contribution margin ratio. It is useful when a business sells many products and thinks in revenue rather than units, provided the sales mix and margins hold steady.
- Contribution margin ratio
- The contribution margin per unit divided by the selling price, as a percent. It is the share of each sales dollar left after variable costs. A 40% ratio means every $100 of sales contributes $40 toward fixed costs and profit. A higher ratio lowers break-even revenue and makes profit more sensitive to volume.
- Fixed costs
- Costs that stay the same regardless of how many units are produced within the period analyzed, such as rent, salaries, insurance and loan payments. They must be covered by contribution margin before any profit exists. The calculator treats them as constant; in reality they can step up once volume outgrows existing capacity.
- Variable cost per unit
- The cost that rises with each unit produced or sold, such as materials, direct labor, packaging, shipping and payment processing fees. The calculator assumes it is the same for every unit. Volume discounts or overtime can change it in practice, which would shift both the contribution margin and the break-even point.
In our glossary: Contribution margin · Break-even point
Contribution Margin & Break-Even calculator: questions from firms and clients
What's the contribution margin ratio?
Contribution margin per unit divided by price.
Is target profit before or after tax?
Before tax.
How is this different from the break-even calculator?
It adds a target profit and shows the margin ratio.
Can I use it for services?
Yes, with billable hours or projects as units.
What if fixed costs rise with volume?
Run the calculator for each capacity level.
Does it handle multiple products?
Not directly; use a weighted average.
Can it support a loan application?
As a planning aid; lenders expect full projections.
Which plan includes it?
Network. See pricing.
No question matches that filter. Clear it to see them all, search the whole site, or ask us directly; we reply within one business day.
Clients who ask this usually ask next
Break-Even
how many sales do I need to break even
Profit Margin
what is a good profit margin for my business
Cash Flow Budget
how do I make a cash flow budget for my business
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Answer the December question before the client calls
Embed the Contribution Margin & Break-Even calculator on your firm's site in an afternoon and receive requests with the numbers already filled in.
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