Small Business Break-Even Analysis: What It Is and How to Use It

Before you can make smart decisions about pricing, hiring, or expanding, you need to answer one fundamental question: how much do you need to sell just to cover your costs?

That number is your break-even point. And knowing it changes how you run your business.

This guide covers what break-even analysis actually means in plain English, the formula and how to apply it, the difference between fixed and variable costs, and two complete worked examples: one for a service business and one for a product business. By the end, you'll be able to calculate your own break-even point and start using it to make better decisions.

If you just want the quick formula and calculator, skip to the break-even point formula or use the KnowYourNut Break-Even Calculator directly.

What Break-Even Means in Plain English

Your break-even point is the exact level of sales at which your total revenue equals your total costs. You're not making money yet. You're not losing money. You've covered everything.

Every dollar of revenue you bring in above your break-even point is profit. Every dollar below it is a loss.

Think of it like this: you have a pile of bills your business has to pay every month, rent, insurance, software subscriptions, your own salary, and more. You need to sell enough to cover that pile before you see a single dollar of real profit. The break-even point is the moment the pile is paid.

This sounds simple, but most small business owners can't tell you their number off the top of their head. That's a problem, because without it, pricing decisions, hiring decisions, and expansion decisions are all guesses.

Fixed Costs vs. Variable Costs

Before you can calculate your break-even, you need to sort your costs into two buckets.

Fixed Costs

Fixed costs don't change based on how much you sell. They show up every month whether you make one sale or one hundred.

Examples of fixed costs:

• Rent or mortgage on your business space
• Insurance premiums
• Salaried employees (including your own salary if you pay yourself one)
• Loan payments
• Software subscriptions
• Equipment leases
• Utilities (roughly, the base portion)

Fixed costs are your floor. They're what you owe before you sell anything.

Variable Costs

Variable costs scale directly with sales volume. The more you sell, the more these cost.

Examples of variable costs:

• Raw materials or inventory purchased per unit
• Shipping and packaging per order
• Payment processing fees (typically a percentage of each transaction)
• Freelancer or contractor pay per project
• Sales commissions

In a service business, variable costs are often very low, which is one reason service businesses tend to have better margins than product businesses. In a product business, variable costs are usually significant and directly tied to how much you make or buy.

The Contribution Margin

There's one more piece you need: the contribution margin.

Contribution Margin = Selling Price - Variable Cost Per Unit

This is how much each sale "contributes" toward paying your fixed costs. Once your fixed costs are covered, contribution margin becomes profit.

If you sell a product for $50 and it costs you $20 to produce and ship, your contribution margin is $30 per unit. Every sale moves you $30 closer to breaking even.

The Break-Even Point Formula

Once you have your fixed costs and contribution margin, the math is straightforward.

Break-Even Point (in units) = Fixed Costs / Contribution Margin Per Unit

Break-Even Point (in revenue) = Fixed Costs / Contribution Margin Ratio

Where:

Contribution Margin Ratio = Contribution Margin Per Unit / Selling Price

You can use the unit formula when you sell a single product or service at one price. The revenue formula is more useful when you sell multiple things at different price points.

Let's run through both with real examples.

Worked Example 1: A Service Business (Solo Bookkeeper)

Sara runs a solo bookkeeping practice. She works from home and serves small businesses on monthly retainer contracts.

Her Fixed Costs (monthly):

• Accounting software: $80
• Professional liability insurance: $150
• Her own salary (she pays herself): $4,500
• Phone and internet (business portion): $120
• Marketing and professional memberships: $200
• Total Fixed Costs: $5,050/month

Her Pricing and Variable Costs:

• She charges clients $400/month per client
• Variable cost per client: minimal, roughly $15 in processing fees and additional software per client
• Contribution Margin: $400 - $15 = $385 per client

Break-Even Calculation:

Break-Even (clients) = $5,050 / $385 = 13.1 clients

Sara needs approximately 14 monthly retainer clients to cover all her costs and pay herself $4,500. Client 15 onward is pure profit.

What this tells her:

• She knows her target before she even starts selling
• If she's sitting at 10 clients, she's losing money and knows exactly how many she needs to add
• If she wants to raise her salary to $6,000/month, she recalculates and knows she'll need about 16-17 clients

That's the power of break-even analysis: it turns vague goals into concrete targets.

Revenue version:

• Contribution Margin Ratio = $385 / $400 = 96.25%
• Break-Even Revenue = $5,050 / 0.9625 = $5,247/month

Sara needs about $5,247 in monthly revenue to break even.

Worked Example 2: A Product Business (Custom Candle Maker)

Marcus sells handmade soy candles through his own website and at local craft markets. His costs look different from Sara's.

His Fixed Costs (monthly):

• Studio rental (shared space): $600
• Business insurance: $75
• E-commerce platform and website hosting: $60
• Credit card reader and POS fees (monthly minimums): $25
• Vehicle insurance, business portion: $80
• Marcus's draw from the business: $3,500
• Total Fixed Costs: $4,340/month

His Pricing and Variable Costs (per candle):

• Selling price: $28
• Soy wax, wick, fragrance, dye: $5.20
• Glass jar and lid: $2.80
• Label and packaging: $1.50
• Payment processing (3%): $0.84
• Total Variable Cost Per Unit: $10.34
• Contribution Margin: $28 - $10.34 = $17.66

Break-Even Calculation:

Break-Even (candles) = $4,340 / $17.66 = 245.7 candles

Marcus needs to sell approximately 246 candles per month to break even.

What this tells him:

• At two craft markets a month, he needs to average roughly 123 candles per event
• If he's only selling 150 candles a month online and at markets combined, he's losing money
• He can use this to decide whether to add a third market, run a promotion, or reduce costs

What if he raises his price to $32?

• New Contribution Margin: $32 - $10.34 = $21.66 (processing fee adjusts slightly)
• New Break-Even: $4,340 / $21.66 = 200 candles

By raising his price $4 per candle, Marcus drops his break-even from 246 units to 200 units. That's 46 fewer candles he needs to sell just to cover his costs.

Pricing decisions hit your break-even hard. Use the KnowYourNut Break-Even Calculator to model the impact of price changes before you commit to them.

When to Use Break-Even Analysis

Break-even isn't just a one-time calculation. Here are the situations where revisiting it makes the most sense:

Before you raise prices. Model the new break-even and compare it to your current sales volume. A modest price increase often dramatically reduces how much you need to sell.

Before hiring someone. Adding an employee increases your fixed costs. How much additional revenue do you need to justify that hire? The true cost of hiring guide pairs well with this analysis.

Before opening a new location or market. New fixed costs need new revenue to support them. Know the number before you sign the lease.

When you're evaluating a new product or service. Does the contribution margin on this new offering justify what it costs to launch and support it?

When business slows down. If revenue drops, where are you relative to break-even? Knowing this tells you how urgent the situation is.

Break-Even Has Limits, Too

A few things break-even analysis doesn't account for:

It assumes costs and prices stay fixed. In reality, variable costs often change at higher volumes (bulk discounts on materials, for example), and prices vary by channel or customer type.

It doesn't tell you how *long* it will take to reach break-even. You might need 246 candles a month but only have capacity to make 180. That's a production problem, not a pricing one.

It also doesn't factor in cash timing. You can be above break-even on paper and still run short on cash if customers pay slow. See cash flow forecasting for small businesses for that side of the picture, and how to read a profit and loss statement to understand what happens after break-even.

Do the Math

Break-even analysis is one of the simplest and most powerful financial tools available to small business owners. It takes about 20 minutes to set up the first time and gives you a number you can reference for every major business decision.

Know your break-even. Know when you've hit it each month. And know what it takes to move it lower over time.

The KnowYourNut Break-Even Calculator walks you through the inputs and gives you your number instantly.

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*This content is for informational purposes only and does not constitute financial or tax advice. Consult a qualified professional for your specific situation.*