Break Even Calculator

Total Fixed Costs ($)

Variable Cost Per Unit ($)

Selling Price Per Unit ($)

A break-even calculator is an essential planning tool for any business that sells a product or service at a defined price. The break-even point is the exact sales volume at which total revenue equals total costs - you are neither making a profit nor sustaining a loss. Knowing this number before you launch is the difference between a grounded business plan and a financial guess. Enter your Total Fixed Costs ($), Variable Cost Per Unit ($), and Selling Price Per Unit ($), and the tool returns two critical outputs: Break-Even Volume (Units) and Required Revenue ($). It also derives your Contribution Margin Per Unit - the portion of each sale that goes toward covering fixed costs. Critical limitation: if your Selling Price Per Unit is equal to or less than your Variable Cost Per Unit, break-even is mathematically impossible. Every unit sold in that case increases your total loss. The calculator flags this condition rather than returning a nonsensical result.

How to Use the Break-Even Calculator - Step by Step

Enter "Total Fixed Costs ($)" - input all costs paid regardless of how many units you sell: monthly rent, insurance premiums, salaried employee wages, loan repayments, software subscriptions, and any other costs that remain constant whether you sell zero units or ten thousand.
Enter "Variable Cost Per Unit ($)" - input the cost that directly increases each time one additional unit is produced or sold: raw materials, direct labor per unit, per-unit packaging, per-unit outbound shipping, and per-unit payment processing fees.
Enter "Selling Price Per Unit ($)" - input the price you charge one customer for one unit of your product or service. This must exceed Variable Cost Per Unit for break-even to be achievable.
Click "Calculate" - the tool computes the Contribution Margin Per Unit, Break-Even Volume (Units), and Required Revenue ($).
Read "Break-Even Volume (Units)" - the minimum number of units you must sell to cover all fixed and variable costs. Selling fewer units results in a net loss.
Read "Required Revenue ($)" - the total sales revenue at the break-even volume, equal to Break-Even Volume multiplied by Selling Price Per Unit.
Test what-if scenarios - increase the selling price to lower the break-even volume; reduce fixed costs to see how few units you then need; raise variable cost to model a supplier price increase.
Check for impossible break-even - if Selling Price Per Unit is less than or equal to Variable Cost Per Unit, the Contribution Margin is zero or negative and no finite sales volume can cover fixed costs.

Break-Even Formula Explained

Contribution Margin Per Unit = Selling Price Per Unit - Variable Cost Per Unit Break-Even Volume (Units) = Total Fixed Costs / Contribution Margin Per Unit Required Revenue ($) = Break-Even Volume x Selling Price Per Unit

Total Fixed Costs ($)

Costs paid regardless of production volume: rent, insurance, salaried payroll, equipment leases, and subscriptions.

Variable Cost Per Unit ($)

Cost incurred for each additional unit sold: materials, direct labor per unit, per-unit packaging, and per-unit shipping.

Selling Price Per Unit ($)

Price charged to one customer for one unit. Must exceed Variable Cost Per Unit for break-even to be achievable.

Contribution Margin Per Unit ($)

Selling Price Per Unit minus Variable Cost Per Unit. The portion of each sale that covers fixed costs and eventually generates profit.

The contribution margin is the core concept in break-even analysis. Each unit sold at the selling price first recovers its own variable cost, and the remaining amount (the contribution margin) is applied toward fixed costs. Once enough units have been sold so that cumulative contribution margin equals fixed costs, the business reaches break-even. Every additional unit sold beyond that point generates pure contribution margin as profit. Critical limitation: if the selling price per unit is at or below the variable cost per unit, the contribution margin is zero or negative. Selling more units in this condition increases the total loss rather than reducing it. No volume of sales can achieve break-even. Raise the selling price above variable cost or reduce variable cost below the selling price to restore a positive contribution margin before a valid break-even volume can be computed.

Break-Even Calculator - Worked Examples with Real Numbers

Example 1 - Coffee Shop Monthly Break-Even

A coffee shop has $3,000 in monthly fixed costs (rent, insurance, salaried barista). Each drink costs $1.00 in variable cost (coffee, milk, cup, lid). Drinks are priced at $5.00 each. Contribution Margin Per Unit = $5.00 - $1.00 = $4.00. Break-Even Volume = $3,000 / $4.00 = 750 drinks. Required Revenue = 750 x $5.00 = $3,750.00.

Inputs

Fixed Costs: $3,000 · Variable Cost Per Unit: $1.00 · Selling Price Per Unit: $5.00

Result

Break-Even Volume: 750 units · Required Revenue: $3,750.00

Example 2 - SaaS Product Launch

A SaaS product has $10,000 in monthly fixed costs (server, developer salary, support). Variable cost per subscriber is $0.00 (digital delivery, no per-unit cost). Monthly subscription price is $50.00. Contribution Margin = $50.00 - $0.00 = $50.00. Break-Even Volume = $10,000 / $50 = 200 subscribers. Required Revenue = 200 x $50 = $10,000.00.

Inputs

Fixed Costs: $10,000 · Variable Cost Per Unit: $0 · Selling Price Per Unit: $50

Result

Break-Even Volume: 200 units · Required Revenue: $10,000.00

Example 3 - Physical Product Manufacturer

A candle maker has $2,400 in monthly fixed costs (studio, equipment loan). Each candle costs $8.00 in wax, wick, and jar (variable cost per unit). Candles sell for $24.00 each. Contribution Margin = $24.00 - $8.00 = $16.00. Break-Even Volume = $2,400 / $16 = 150 candles. Required Revenue = 150 x $24 = $3,600.00.

Inputs

Fixed Costs: $2,400 · Variable Cost Per Unit: $8.00 · Selling Price Per Unit: $24.00

Result

Break-Even Volume: 150 units · Required Revenue: $3,600.00

Who Uses the Break-Even Calculator?

Startup Founders

Validating a business model before committing funding by confirming that the required break-even volume is achievable within the realistic addressable market. A startup that needs to sell 50,000 units per month to break even in a market that buys only 10,000 total units is unviable regardless of product quality.

Retail and E-commerce Merchants

Deciding whether a new product addition to their catalog makes financial sense by modeling fixed costs allocated to that product (warehouse space, dedicated listing management) alongside its variable cost and planned selling price, to find the minimum sales volume needed to justify adding the line.

Event Planners and Pop-Up Operators

Calculating the minimum ticket sales or item sales needed to cover venue rental, staffing, and equipment hire (all fixed costs for the event) given a set price and variable per-attendee cost, so they know the attendance floor before committing to the event.

Manufacturers Evaluating Equipment Investment

Comparing current production versus buying new equipment that raises fixed costs (loan payment) but lowers variable cost per unit (faster, more efficient production). The break-even calculator shows how many additional units must be sold before the equipment investment pays off in lower per-unit costs.

Common Break-Even Mistakes to Avoid

⚠️Setting Price at or Below Variable Cost - Break-Even is Impossible

If the Selling Price Per Unit is less than or equal to Variable Cost Per Unit, the Contribution Margin is zero or negative. No number of sales can cover fixed costs because each sale either fails to recover its own direct cost or just recovers it without leaving anything for overhead. Raise the selling price above variable cost or reduce variable cost before expecting a valid break-even calculation.

⚠️Understating Variable Cost Per Unit

Variable cost must include every cost that increases with each additional unit sold: materials, direct labor, per-unit packaging, per-unit outbound shipping, and payment processing fees (typically 2-3% of the selling price). Forgetting any of these understates variable cost, overstates contribution margin, and produces an unrealistically low break-even volume. The actual break-even point will be higher than modeled.

⚠️Including One-Time Setup Costs as Monthly Fixed Costs

A one-time capital expenditure like buying equipment or building a website is not a recurring monthly fixed cost. If you enter a $20,000 equipment purchase as a monthly fixed cost, you require the business to pay for the entire asset in one month. Instead, amortize it: divide the cost by its useful life in months and include only the monthly depreciation amount in fixed costs.

⚠️Ignoring Market Demand When Interpreting Break-Even Volume

A break-even calculation may show that you need to sell 5,000 units per month. But if total market demand is only 2,000 units per month, break-even is not achievable regardless of how accurate the math is. Always cross-reference your break-even volume with realistic sales projections based on market research, not just the formula output.

Break-Even Volume at Different Selling Prices (Fixed Costs: $5,000/month, Variable Cost: $20/unit)

This table shows how raising the selling price above variable cost increases the contribution margin and reduces the number of units needed to cover fixed costs. Fixed costs and variable cost per unit are held constant.

Selling Price Per Unit	Contribution Margin Per Unit	Break-Even Volume (Units)	Required Revenue
$25	$5.00	1,000 units	$25,000.00
$30	$10.00	500 units	$15,000.00
$40	$20.00	250 units	$10,000.00
$50	$30.00	167 units	$8,350.00
$70	$50.00	100 units	$7,000.00
$120	$100.00	50 units	$6,000.00

Verification of $30 row: CM = $30 - $20 = $10. Break-Even = $5,000 / $10 = 500 units. Revenue = 500 x $30 = $15,000. Confirmed. Verification of $40 row: CM = $40 - $20 = $20. Break-Even = $5,000 / $20 = 250 units. Revenue = 250 x $40 = $10,000. Confirmed. Verification of $50 row: CM = $50 - $20 = $30. Break-Even = $5,000 / $30 = 166.67 rounded up to 167 units. Revenue = 167 x $50 = $8,350. Confirmed.

Frequently Asked Questions

What is the break-even point?▼

The break-even point is the sales volume (in units or revenue) at which total revenue exactly equals total costs - fixed costs plus all variable costs incurred to produce and sell those units. At break-even, net profit is exactly zero. Selling one unit fewer results in a net loss. Selling one unit more generates the first unit of profit. It is the minimum sales threshold required for a business not to lose money.

What is the break-even formula?▼

Break-Even Volume (Units) = Total Fixed Costs / (Selling Price Per Unit - Variable Cost Per Unit). The denominator is the Contribution Margin Per Unit. Example: Fixed Costs = $10,000, Variable Cost = $20, Selling Price = $50. CM = $50 - $20 = $30. Break-Even = $10,000 / $30 = 333.33, rounded up to 334 units (you cannot sell a fraction of a unit).

What is the contribution margin?▼

The contribution margin per unit is Selling Price Per Unit minus Variable Cost Per Unit. It is the amount each sale contributes toward paying fixed costs and eventually generating profit. A $4 contribution margin on $3,000 of fixed costs requires 750 units sold to reach break-even. The higher the contribution margin, the fewer units are needed to cover fixed costs.

What happens if selling price is less than or equal to variable cost?▼

If Selling Price Per Unit is less than or equal to Variable Cost Per Unit, the Contribution Margin is zero or negative. Every unit sold either fails to recover its own direct cost or just recovers it - leaving nothing for fixed costs. No volume of sales can reach break-even. This is a fundamental pricing problem: raise the selling price above variable cost or reduce variable cost below the selling price before proceeding.

What counts as a fixed cost?▼

Fixed costs are expenses that stay the same regardless of how many units you produce or sell. Examples: monthly rent, annual insurance premium, salaried employee wages, equipment loan repayments, accounting software subscriptions, and domain hosting. If you close for a month and sell nothing, you still owe these costs in full.

What counts as variable cost per unit?▼

Variable costs increase directly with each additional unit produced or sold. Examples: raw materials consumed per unit, direct production labor paid per piece, per-unit packaging, outbound shipping per item, and payment processing fees (a percentage of each transaction). Fixed overheads like rent are NOT variable costs, even if they relate to production space.

How do I lower my break-even point?▼

Three levers exist. First, increase the selling price - a higher price means a larger contribution margin per unit, so fewer units are needed. Second, reduce variable cost per unit - better sourcing, bulk purchasing, or more efficient production lowers per-unit cost and raises contribution margin. Third, reduce fixed costs - renegotiate rent, eliminate non-critical subscriptions, or operate with fewer salaried staff. Any combination moves the break-even volume downward.

Does break-even analysis include taxes?▼

No. Standard break-even analysis identifies the sales volume at which pre-tax net profit is zero. It does not model income taxes. Since tax is only payable on profit (which is zero at break-even by definition), this limitation does not affect the break-even volume itself. When planning profit targets above break-even, remember that a portion of that profit will be owed as income tax.

Can I use break-even analysis for a service business?▼

Yes. For a service business, the 'unit' is typically an hour of service, a project, or a client engagement. Variable cost per unit includes the direct labor cost (if the provider is paid hourly or per project) and any direct materials or tools consumed. Fixed costs include the same overhead as any other business: office rent, salaried admin staff, and software. The formula and calculator work identically.

What is the difference between break-even volume and required revenue?▼

Break-Even Volume (Units) is the quantity of units that must be sold to reach break-even. Required Revenue ($) is the total dollar value of sales at that volume: Break-Even Volume x Selling Price Per Unit. Both describe the same threshold - one in quantity and one in dollars. Required Revenue is more useful when comparing performance against a revenue target. Break-Even Volume is more useful for production planning and sales quota-setting.

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