What Is a Break-Even Point?
The break-even point is the exact number of units you must sell in a given period to cover every cost your business incurs — both fixed and variable. Below that number you operate at a loss; above it every additional sale generates pure profit.
For Shopify store owners, understanding your break-even point is critical before you launch a new product, run a promotion, or scale ad spend. It answers the most fundamental business question: how many sales do I actually need to make money?
There are two types of costs that determine your break-even:
- Fixed costs are expenses that stay the same regardless of how many units you sell — your Shopify subscription, rent, salaries, software, and insurance.
- Variable costs change with every sale — product cost (COGS), shipping, packaging, transaction fees, and per-unit marketing spend.
Break-Even Formulas
Contribution Margin per Unit
Contribution Margin = Selling Price − Variable Cost per Unit
This is the amount each sale "contributes" toward paying off your fixed costs.
Break-Even Point (Units)
Break-Even Units = Total Fixed Costs ÷ Contribution Margin per Unit
Break-Even Point (Revenue)
Break-Even Revenue = Break-Even Units × Selling Price
If your contribution margin is zero or negative, you cannot break even — every sale costs you more than it earns. You must either raise your price or reduce variable costs before scaling.
How to Use This Calculator
- Enter your selling price — the price a customer pays at checkout for one unit.
- Enter your variable costs — product cost (COGS), shipping to the customer, packaging materials, and estimated marketing spend per unit. The calculator computes transaction fees automatically from the percentage you provide.
- Enter your monthly fixed costs — Shopify plan, rent or warehouse costs, salaries, software subscriptions, and any other recurring expenses that do not change with sales volume.
- Read your results — the calculator shows your break-even point in units and revenue, your contribution margin, and a visual breakdown of where your money goes.
Hover over the ? icon next to each field for a detailed explanation.
Step-by-Step Example
Suppose you sell handmade candles on Shopify for $45.00 each. Here are your costs:
Variable Costs (per unit)
| Cost Item | Amount |
|---|---|
| Product cost (COGS) | $12.00 |
| Shipping to customer | $5.50 |
| Packaging | $2.00 |
| Transaction fee (2.9%) | $1.31 |
| Marketing per unit | $4.00 |
| Total Variable Cost | $24.81 |
Contribution Margin = $45.00 − $24.81 = $20.19 per unit (44.9% of price)
Monthly Fixed Costs
| Cost Item | Amount |
|---|---|
| Shopify Basic plan | $29.00 |
| Software / apps | $50.00 |
| Total Fixed Costs | $79.00 |
Break-Even Point = $79.00 ÷ $20.19 = 4 units per month
That means you need to sell just 4 candles per month to cover all costs. Every sale after that is profit. At 30 sales per month, your monthly profit would be (30 − 4) × $20.19 = $525.
Fixed Costs vs. Variable Costs
Understanding which costs are fixed and which are variable is essential for accurate break-even analysis.
| Fixed Costs | Variable Costs |
|---|---|
| Shopify subscription | Product cost (COGS) |
| Rent / warehouse | Shipping per order |
| Salaries / wages | Packaging per order |
| Software subscriptions | Transaction / payment fees |
| Insurance | Marketing per unit |
| Loan payments | Fulfillment fees (3PL) |
Key rule: if the cost increases with every additional sale, it is variable. If it stays the same whether you sell 1 unit or 1,000, it is fixed.
Some costs sit in a gray area. For example, if you hire a part-time packer only during busy months, that wage is semi-variable. For simplicity, assign it to whichever category represents the majority of the time.
What Is a Good Break-Even Point for Shopify Stores?
There is no universal target — it depends on your price point, margins, and fixed cost structure. However, here are general benchmarks:
| Break-Even (units/month) | Assessment |
|---|---|
| Under 50 | Excellent — low risk, fast path to profit |
| 50–200 | Good — achievable for most stores with consistent traffic |
| 200–500 | Moderate — requires solid marketing and conversion rate |
| 500+ | High — review pricing or costs before scaling |
A low-priced, low-margin store selling phone cases at $15 with a $3 contribution margin needs far more units to break even than a premium brand selling $120 skincare with a $60 contribution margin. Higher prices and higher margins dramatically lower your break-even point.
How Contribution Margin Drives Profitability
Contribution margin is the single most important number in this analysis. It tells you the economic value of each sale toward covering overhead and generating profit.
- A high contribution margin (40%+) means each sale carries significant weight — you break even faster and profit scales quickly.
- A thin contribution margin (under 20%) means you need high volume to cover fixed costs, leaving you vulnerable to any cost increase.
Ways to increase contribution margin
- Raise your price — even a $2–$5 increase can have a large impact on a $30–$50 product.
- Negotiate COGS — request volume discounts or find alternative suppliers.
- Reduce shipping costs — use flat-rate boxes, negotiate carrier rates, or adjust packaging dimensions.
- Lower transaction fees — upgrading your Shopify plan reduces the per-transaction percentage, which pays for itself at higher volumes.
- Optimize marketing spend — lower your cost per acquisition by improving ad targeting, landing pages, and email flows.
7 Tips to Lower Your Break-Even Point
- Raise prices strategically — test a 5–10% price increase. Most Shopify stores undercharge. If conversion rate stays stable, your break-even drops immediately.
- Bundle products — bundles increase average order value while spreading fixed costs across more revenue per transaction.
- Cut unnecessary apps — audit your Shopify app stack quarterly. Unused or redundant apps add to your fixed costs every month.
- Negotiate supplier terms — even a small reduction in COGS goes straight to your contribution margin. Ask for volume pricing or longer payment terms.
- Use free or low-cost marketing — SEO, organic social, and email marketing have near-zero variable cost per unit compared to paid ads.
- Optimize packaging — smaller, lighter packages reduce both material and shipping costs.
- Track break-even monthly — as costs and prices change, recalculate to ensure you are still on target. This calculator makes it easy to test different scenarios.
Frequently Asked Questions
What is a break-even point in e-commerce?
The break-even point is the number of units you must sell each month to cover all your costs — both fixed (Shopify plan, rent, software) and variable (COGS, shipping, fees). Below this number you lose money; above it every additional sale is profit. It is the minimum viable sales target for your store.
How do you calculate break-even units?
Break-Even Units = Total Fixed Costs / Contribution Margin per Unit. Contribution margin is your selling price minus all variable costs (product cost, shipping, packaging, transaction fees, and marketing per unit). If your contribution margin is negative, you cannot break even at any volume.
What is contribution margin?
Contribution margin is the amount each sale contributes toward covering your fixed costs. It equals selling price minus variable costs per unit. A $45 product with $25 in variable costs has a $20 contribution margin. The higher this number, the fewer sales you need to break even.
How many units per month should a Shopify store sell to be profitable?
It depends entirely on your fixed costs and contribution margin. A store with $500 in monthly fixed costs and a $20 contribution margin needs just 25 sales to break even. A store with $5,000 in fixed costs and a $10 margin needs 500 sales. Use this calculator to find your exact number.
How can I lower my break-even point?
You can lower your break-even point by raising your selling price, reducing variable costs (negotiate supplier pricing, optimize shipping), or cutting fixed costs (audit app subscriptions, downsize workspace). Even small improvements compound — a $2 reduction in variable cost on a $20 contribution margin drops your break-even by roughly 10%.
About This Calculator
This break-even calculator was built specifically for Shopify merchants by Luis Dev Studio. Unlike generic break-even tools, it separates e-commerce-specific variable costs — transaction fees, per-unit marketing, and packaging — from fixed monthly costs like your Shopify plan and software stack. Results update in real time as you adjust any input.
Want help planning your Shopify store's finances? Get in touch for a free consultation.