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# How to calculate your store’s break-even point
- URL: https://conversion.club/playbook/calculate-store-break-even-point/
- Published: 2026-10-29T09:14:20.000Z
- Updated: 2026-10-29T09:50:07.000Z
- Description: Divide fixed costs by contribution-margin rate, then use actual seasonality to estimate the break-even date. Include every variable cost.
- Author: Jeremie Werner
- Tags: Protect margin, #playbook, Analytics

Divide annual fixed costs by the contribution-margin rate after variable costs. The result is the sales revenue, excluding tax, at which the store covers its costs. To estimate when it reaches that point, use month-by-month seasonality rather than assuming evenly distributed sales.

## The benchmark

The US Small Business Administration’s English calculator expresses break-even units as fixed costs divided by selling price less variable cost per unit. For a store-wide revenue model, the equivalent contribution-rate form is:

- Contribution after variable costs = sales excluding tax − variable costs.
- Contribution-margin rate = contribution ÷ sales excluding tax.
- Break-even revenue = fixed costs ÷ contribution-margin rate.

A simplified timing calculation is `(break-even revenue ÷ forecast annual revenue) × days in the financial year`. Use the actual number of calendar days in the modeled year and keep the basis consistent; the fictional example below uses 365\. It assumes stable contribution rate and uniform sales over time.

Here is the source's fictional cosmetics brand:

| Annual item                                      | Amount           |
| ------------------------------------------------ | ---------------- |
| Sales excluding tax                              | $1,500,000       |
| Cost of goods sold                               | $600,000         |
| Fulfillment and shipping                         | $150,000         |
| Payment fees                                     | $30,000          |
| Paid acquisition                                 | $270,000         |
| Contribution after variable costs                | $450,000, or 30% |
| Fixed team, warehouse, software, and other costs | $360,000         |

Break-even revenue is `$360,000 ÷ 0.30 = $1,200,000`. With uniform sales, the store reaches it on day 292 of a 365-day year, around October 19 in the example. The safety margin is $300,000, or 20% of forecast sales. These are fictional USD inputs, not a currency conversion or a forecast for another store.

## The rule

Include every cost that follows orders and use realized sales net of discounts and returns. Then express the result as revenue, orders, and a date.

As in the [order contribution guide](https://conversion.club/playbook/how-do-you-calculate-the-contribution-margin-of-an-order/), acquisition can be variable if it follows sales or fixed if it is a committed annual budget. Keep the classification consistent and avoid counting it twice. In a lingerie-and-apparel field example, management's margin after manufacturing and ads omitted transaction and transportation costs. Every omitted variable cost overstated the margin rate and understated break-even revenue.

At a fictional $75 tax-exclusive AOV, each order contributes $22.50 at 30%, requiring 16,000 orders to cover $360,000\. More traffic can bring the date forward without changing the revenue threshold. Raising contribution rate to 31% lowers the threshold by about $39,000\. That gain could come from fewer discounts, fewer returns, or cheaper acquisition.

## The steps

1. **Classify the P&L.** Mark each prior-year line as variable or fixed. The [e-commerce P&L guide](https://conversion.club/playbook/what-does-an-e-commerce-p-l-look-like/) provides an inventory.
2. **Use realized economics.** Work on rolling-twelve-month revenue after discounts and returns. A Club winter-accessories brand's realized revenue was roughly 12% below displayed-price value despite limited promotions. Begin with [product margin](https://conversion.club/playbook/gross-margin-vs-markup/), deduct fulfillment, payments, returns, and variable acquisition, then divide fixed costs by the resulting rate.
3. **Date it monthly.** Find the month in which cumulative sales first exceed the threshold. The approximate day is `(threshold − cumulative sales at previous month-end) ÷ current-month sales × days in that month`. Use contribution itself if margins vary materially by month.
4. **Stress-test assumptions.** Examine a two-percentage-point rate decline, 10% higher fixed costs, and 15% lower sales. Link these to the [site-to-P&L analysis](https://conversion.club/playbook/how-do-i-connect-my-site-to-my-p-l/).

| Fictional scenario        | Break-even revenue | Safety margin       |
| ------------------------- | ------------------ | ------------------- |
| Base                      | $1,200,000         | $300,000, 20%       |
| Contribution rate 28%     | $1,285,700         | $214,300, about 14% |
| Fixed costs +10%          | $1,320,000         | $180,000, 12%       |
| Sales −15%, to $1,275,000 | $1,200,000         | $75,000, about 6%   |

## The pitfall

Uniform timing misleads seasonal stores. Allocate the fictional annual sales as 6% monthly in January–March, 7% in April–July, 8% in August–September, 10% in October, 16% in November, and 12% in December. Cumulative sales at October-end are $1.08 million. The remaining $120,000 is half November's $240,000, moving break-even to around November 15.

A team assuming October 19 might deepen early-November discounts while still covering fixed costs. Check [promotion profitability](https://conversion.club/playbook/what-does-a-promotion-really-earn-you-margin-included/). The cited winter brand makes 77% of annual sales from November to February and 3% from June to August; its calendar is evidence about that brand, not all markets. This operating threshold is also distinct from cash-flow solvency.

## What to tell your team

This example is fictional:

> “With $360,000 fixed costs and a 30% contribution rate, break-even is $1.2 million excluding tax, or 16,000 orders at $75\. Our seasonality puts the date near November 15\. A one-point contribution improvement would lower the threshold about $39,000.”

## Sources

- [US Small Business Administration: Break-even point calculator](https://www.sba.gov/counseling/plan-your-business/break-even-point-calculator/?ref=conversion.club)