Calculate Your Breakeven Point Today

The Margin Trap: Why 60% of Small Business Owners Don’t Know Their Breakeven Point

You’ve built a solid product. Your customers love it. But when you sit down to review your finances at the end of the month, the numbers don’t feel right. You’re moving inventory, generating sales, but your bank account isn’t growing the way it should. That gap between revenue and actual profit is where most small business owners get stuck.

The problem isn’t always that you’re pricing too low or that your customers are disappearing. Often, it’s that you’ve never done the math on what you actually need to earn per sale to stay afloat—your breakeven point. According to SCORE 2024 research, 60% of small business owners have never calculated their breakeven point, which means they’re flying blind on one of the most critical metrics in business.

Without knowing your breakeven number, you can’t make confident pricing decisions, negotiate with suppliers, or plan for growth. This article walks you through the exact steps to calculate your breakeven point and shows you how to use it to unlock profit.

TL;DR

Your breakeven point is the revenue level at which total revenue equals total expenses—knowing it is non-negotiable for pricing and growth decisions.
Fixed costs (rent, salaries, software) and variable costs (COGS, shipping fees) combine to determine how many units or how much revenue you need to survive each month.
Once you know your breakeven, you can set prices confidently, identify which products are actually profitable, and spot cash flow leaks before they become crises.

Understanding Your Cost Structure: The Foundation of Breakeven

Every dollar you spend falls into one of two buckets: fixed costs or variable costs. Fixed costs stay the same regardless of how many units you sell—rent, salaries, insurance, software subscriptions. Variable costs change with every sale—cost of goods sold (COGS), shipping, payment processing fees.

Here’s why this matters: if your fixed costs are $5,000 per month and your average gross margin per unit is $15, you need to sell at least 334 units just to break even. If your gross margin is only $5 per unit, you need 1,000 units. Same fixed costs, completely different breakeven.

Most small business owners know their total monthly expenses but haven’t separated them into fixed and variable categories. That’s the first mistake. According to Deloitte 2024 research, overhead costs consume 35% of revenue for average SMBs, compared to just 18% for top performers—many of which have optimized their cost structure by understanding exactly which expenses scale and which don’t.

Calculating Your Unit Breakeven Point

If you sell physical products—whether on Amazon FBA, Shopify, or wholesale—you’ll want to know your unit breakeven: the number of units you must sell to cover your fixed costs and variable cost per unit.

The formula is simple:

Units to Break Even = Fixed Costs ÷ (Selling Price − Variable Cost per Unit)

That denominator is your contribution margin per unit—what’s left from each sale after paying the direct costs to produce and deliver that product.

Example: You’re selling a product at $40 per unit. Your COGS is $16, shipping is $4, payment processing is $2. That’s $22 in variable costs per unit. Your contribution margin is $40 − $22 = $18. If your fixed costs are $4,500 per month, your breakeven is 4,500 ÷ 18 = 250 units. You need to sell 250 units just to cover your rent, salaries, and software—not profit, just break even.

Revenue Breakeven: The Sales Target You Actually Need

If you prefer to think in terms of total revenue rather than units, use this formula:

Breakeven Revenue = Fixed Costs ÷ Contribution Margin %

Your contribution margin percentage is (Selling Price − Variable Cost per Unit) ÷ Selling Price. In the example above, that’s $18 ÷ $40 = 45%.

So breakeven revenue = $4,500 ÷ 0.45 = $10,000 per month. You need $10,000 in monthly sales to break even. Anything above that is profit (before taxes and reinvestment).

According to the National Retail Federation, average retail gross margins range from 25–35% depending on category. If you’re below 25%, you’re operating in a highly margin-compressed category and need higher volume or lower fixed costs to succeed profitably.

The Amazon FBA Reality: Why Margin Matters More Than Revenue

Amazon FBA sellers face a unique challenge. According to Jungle Scout’s 2025 State of the Seller report, 50% of Amazon sellers report net margins below 20% after all FBA fees, referral fees, and ad spend. That’s razor-thin room for error.

If you’re an FBA seller with average margins of 15–20% and fixed costs of $2,000 per month (which might include PPC ad spend, software tools, and your own labor), your breakeven revenue is likely $10,000–$13,000 per month just to cover expenses. Every sale below that threshold is burning through your cash reserves.

This is why Amazon FBA sellers who understand their cost structure tend to either raise prices, reduce COGS by finding better suppliers, or shift to higher-margin products. A 1% improvement in price results in an average 11% improvement in operating profit according to McKinsey research—for FBA sellers working with thin margins, even a $1 price increase can be transformative.

Spot Your Profit Leaks: Which Products Actually Make Money?

Once you know your breakeven point, the next step is to audit which products are contributing to profit and which are dragging you down.

Calculate the contribution margin for each product individually. Rank them by contribution margin percentage, not by revenue. You might have a bestseller that looks impressive in sales volume but contributes only 12% margin per unit, while a slower-moving product delivers 35% margin. The slower product is more profitable.

For retailers and Shopify sellers, this often reveals uncomfortable truths: a “popular” SKU might not be worth the shelf space or inventory holding cost it consumes. For dropshippers, it might mean discontinuing products that seemed profitable until you subtracted supplier shipping, platform fees, and ad spend.

The goal isn’t to kill every low-margin product—it’s to price them correctly. If a product contributes 12% margin and your fixed cost allocation to that SKU is 8%, you have a $0.04 profit per unit sold. Either raise the price or discontinue it and reallocate inventory to higher-margin items. To dive deeper into this analysis, check out our guide on how to stop losing money to hidden margin leaks.

Use BizMargin in 5 Minutes — Free

Calculating breakeven by hand works, but it’s easy to miss variable costs or update assumptions. BizMargin is a free online calculator built specifically for small business owners, Amazon sellers, and retailers. Here’s how to use it:

Step 1 — Go to BizMargin.com and select your business model (Shopify, Amazon FBA, Wholesale Retail, or Dropshipping).
Step 2 — Enter your product selling price and all variable costs (COGS, shipping, payment processing, platform fees). The calculator automatically computes your gross margin and contribution margin.
Step 3 — Input your monthly fixed costs (rent, salaries, software, utilities, ad spend allocation). The calculator

Oliver K.G

Oliver is the founder of BizInvoiceGen.com, a free invoice generator trusted by freelancers and small business owners. He writes on invoicing best practices, cash flow management, and getting paid faster.