How to Calculate Your Black Friday Break-Even ROAS Before Setting a Discount

Your Black Friday campaign is generating sales, and your ads dashboard shows a 4x ROAS. That looks promising. But is it enough to cover the discount, product costs, shipping and advertising?

The answer depends on your break-even ROAS.

To calculate break-even ROAS, divide your net revenue per order by the contribution left after variable costs and before advertising. For example, if a discounted order brings in $75 and leaves $20 after variable costs, its break-even ROAS is 3.75x.

Below that point, the order does not cover its variable costs and advertising. Above it, the order contributes money toward fixed overhead and profit.

Knowing this number is especially useful before Black Friday. A discount can increase the ROAS you need to break even, even when the campaign looks successful in your ad dashboard.

Key takeaways#

• Break-even ROAS tells you how much revenue you need for each advertising dollar to cover variable order costs and advertising.
• A deeper discount can raise your break-even ROAS because some order costs stay the same when the selling price falls.
• In AdScale’s BFCM 2025 analysis, order-level discounts represented 14.2% of gross sales, compared with 6.8% in October 2025.
• Reported ROAS increased during the same comparison, showing why ad revenue and discounting need to be reviewed together.
• Before choosing an offer, calculate the break-even point for each discount and compare it with your campaign results.

What is break-even ROAS?#

Break-even ROAS is the revenue-to-ad-spend ratio at which an order covers its variable costs and its advertising cost.

ROAS, or return on ad spend, measures how much revenue is attributed to advertising relative to the amount spent. Break-even ROAS adds the order’s costs to the decision.

For example, a 3x break-even ROAS means you need $3 in revenue for every $1 spent on advertising to cover the variable costs included in your calculation.

A result above break-even does not automatically mean your business is profitable. The money left still needs to cover fixed expenses, such as salaries, rent and monthly software subscriptions.

How to calculate break-even ROAS#

Use this formula:

Break-even ROAS = Net revenue per order ÷ Contribution per order before ads

First, calculate contribution:

Net revenue per order − variable order costs = contribution per order before ads

Variable costs are expenses that change when you make or fulfill an order. Depending on your store, these may include:

• Product or inventory cost
• Shipping, packaging and fulfillment
• Payment processing and transaction fees
• Marketplace or per-order app fees
• An allowance for returns and refunds

Use revenue after discounts. Include any shipping charged to the customer, account consistently for expected returns, and exclude sales tax or VAT collected on behalf of the government.

If contribution before ads is zero or negative, the order cannot break even on the initial sale at any positive advertising spend. The revenue is already used up before the ad cost is added.

Why do Black Friday discounts increase break-even ROAS?#

A discount reduces the revenue you receive from an order. Some costs, such as the product and packaging, may remain the same. Other costs, such as percentage-based payment fees, may decrease.

When revenue falls faster than costs, less money remains to cover advertising. That means the ROAS required to break even rises.

Here’s what that looks like in practice.

Black Friday break-even ROAS example#

Imagine you sell a jacket for $100. Your variable costs are:

At full price, the jacket leaves $45 in contribution before ads.

$100 ÷ $45 = 2.22x break-even ROAS

Now let’s apply different discounts:

The jacket and its costs are illustrative. For simplicity, the example holds the $55 cost constant at every price. In practice, recalculate costs that change with the sale price. The 22% discount is rounded from the 22.1% average discount on discounted orders in AdScale’s BFCM 2025 cohort.

A 22% discount raises the break-even ROAS from 2.22x to 3.39x, an increase of approximately 53%.

At 40% off, contribution before ads falls from $45 to $5. The break-even ROAS rises to 12x.

What happens if both campaigns achieve a 5x ROAS?#

At 5x ROAS, acquiring the $100 full-price order costs $20 in advertising:

$100 revenue − $55 variable costs − $20 ad spend = $25 remaining

At 40% off, acquiring the $60 order at the same 5x ROAS costs $12:

$60 revenue − $55 variable costs − $12 ad spend = a $7 loss

Both calculations are before fixed overhead. The reported ROAS is the same, but the contribution from each order is different.

What AdScale’s BFCM 2025 data shows#

AdScale compared anonymized, aggregated data from stores using its platform during October 2025 and Black Friday through Cyber Monday 2025, with outliers excluded from the analysis.

During the four-day BFCM period, order-level discounts represented 14.2% of gross sales, compared with 6.8% in October. Reported ROAS also increased on both Google and Meta.

Source: AdScale BFCM 2025 analysis. These figures describe the stores included in the AdScale cohort and are not industry-wide benchmarks. See “About the data” below. Percentage changes in average order value and average daily ad spend are relative to October 2025.

More orders included a discount#

During BFCM, 50.4% of orders in the AdScale dataset included an order-level discount, compared with 28.4% in October. On Black Friday itself, the figure reached 53.5%.

The share of gross sales represented by discounts also increased, from 6.8% to 14.2%.

These metrics answer different questions. The percentage of discounted orders shows how often an order included a discount. Discounts as a share of gross sales measure the value of those discounts relative to sales.

Average order value was slightly lower#

Average order value in the AdScale cohort was 3.3% lower during BFCM than in October 2025, while discounts represented a larger share of gross sales. This makes it especially useful to check how much each discounted order leaves after variable costs and advertising.

A higher order value can help offset a discount, but it does not automatically mean a more profitable order. The additional products and fulfillment must also leave enough contribution after their costs.

Reported ROAS increased alongside discounting#

Reported Google Ads ROAS in the AdScale cohort rose from 6.9x to 7.8x, while reported Meta ROAS rose from 5.0x to 5.4x.

These figures are specific to the stores and reporting included in this analysis. They are not targets that every ecommerce store should expect to achieve.

The finding also does not establish whether profit margins rose or fell. That would require the stores’ product, fulfillment and other cost data.

What it does show is why it’s useful to review the numbers together: reported ROAS can rise while discounts represent a larger share of sales.

Is a 4x ROAS profitable during Black Friday?#

A 4x ROAS can be profitable for one store and unprofitable for another. It depends on how much revenue remains after variable costs.

If your break-even ROAS is 2.5x, a 4x return leaves money toward fixed overhead and profit. If your break-even ROAS rises to 5x after discounting, a 4x return does not cover the variable costs and advertising included in the calculation.

That’s why there is no single “good” Black Friday ROAS for every store.

Your product costs, discount, shipping policy, payment fees and returns all affect the answer.

How to calculate your Black Friday break-even ROAS#

You do not need to start with every product in your catalog. Begin with your best-selling products, planned promotional bundles or a typical order.

1. Calculate net revenue per order#

Start with what the customer pays after discounts. Include shipping revenue if you charge for it, and account consistently for expected returns.

For a $100 product with 25% off and free shipping, revenue starts at $75, before any allowance for returns.

2. Add variable order costs#

Include product cost and the costs associated with fulfilling the order. These might include shipping, packaging, payment processing, fulfillment and per-order fees.

If returns are common in your category, include a reasonable estimate based on your own experience.

3. Calculate contribution before ads#

Subtract your variable costs from net revenue.

If the discounted order brings in $75 and variable costs are $55, contribution before ads is $20.

4. Divide revenue by contribution#

$75 ÷ $20 = 3.75x break-even ROAS

The order needs a 3.75x ROAS to cover the variable costs and advertising in this example. It needs a higher return to contribute toward fixed overhead and profit.

5. Repeat the calculation for each offer#

Test each discount you are considering. Recalculate any costs that change with the promotion, such as percentage-based payment fees, shipping subsidies or the cost of a free gift.

6. Compare the result with your campaign data#

Review your recent campaign results and last year’s BFCM performance, if available. Use consistent dates and revenue definitions when comparing store data with advertising-platform reports.

Attribution and tracking settings can produce different results, so use reported ROAS as one input alongside your order economics.

If your campaigns are falling short, start by reviewing the common causes of low ROAS and ways to improve it. Once you have a viable offer and target, use your break-even calculation to help plan how much to increase your Black Friday ad budget.

What if your Black Friday discount raises break-even ROAS too high?#

You do not have to apply the same discount to every product. Test alternatives and calculate the contribution for each one.

Discount higher-margin products#

Some products leave more room to cover advertising after a discount than others. Review your costs and identify which products can support a promotion.

A high selling price does not necessarily mean a high contribution margin, so calculate before choosing.

Test a tiered offer#

A tiered promotion gives shoppers an incentive to increase their order value. For example:

• 15% off orders over $75
• 25% off orders over $150

The higher basket value may help cover fulfillment and advertising, but only if the additional products contribute enough after their own costs.

Offer a bundle or gift with purchase#

A bundle can encourage customers to buy complementary products. A gift can add value without applying a discount to the entire order.

Include the cost of the extra product, packaging and any additional shipping when reviewing the offer.

Set a free-shipping threshold#

Free shipping above a minimum order value may encourage shoppers to add another item. Check that the extra contribution covers the cost of shipping before choosing the threshold.

For a wider view of your seasonal spending, see AdScale’s guide to Q4 ad budget planning.

How AdScale can support your BFCM decisions#

Your break-even ROAS starts with your store’s own costs. Once you know it, you can use that number as context when reviewing your campaigns.

AdScale connects store data with Google and Meta advertising, giving you a view of your orders and ad results as you manage campaigns.

For example, if your promotional orders need a 3.75x ROAS to cover variable costs and advertising, you can use that threshold when assessing reported results. Keep your actual product costs and attribution differences in mind before making budget decisions.

Explore how AdScale can help you manage your BFCM campaigns.

Frequently asked questions#

What is the formula for break-even ROAS?#

Divide net revenue per order by contribution per order before advertising. Contribution is the revenue left after variable costs, such as product, shipping, fulfillment and payment fees. For example, $75 in revenue divided by $20 in contribution gives you a 3.75x break-even ROAS.

Why does a discount increase break-even ROAS?#

A discount reduces order revenue, while some costs, such as the product and packaging, may stay the same. When less money remains to cover advertising, the order needs a higher ROAS to break even. Recalculate any costs that also change with the selling price.

Is a 4x ROAS good for Black Friday?#

A 4x ROAS is useful only when compared with your store’s costs and target. If your break-even ROAS is 2.5x, it leaves a contribution toward overhead and profit. If your break-even ROAS is 5x, it falls short of covering the costs in your calculation.

Should I include returns in break-even ROAS?#

Yes, when returns materially affect your business. Use a reasonable estimate based on your own return rate and associated costs, including refunds, return shipping, handling and inventory you cannot resell. Apply the same assumptions consistently to revenue and costs.

Can a deeper Black Friday discount improve profit?#

It can, but the outcome depends on more than the number of orders. A discount may generate additional sales, larger baskets or future purchases, while also reducing contribution on discounted orders. Calculate the offer’s economics and measure the results before deciding whether to repeat it.

Choose the discount after you know the numbers#

Black Friday moves quickly. Before you increase your discount or advertising budget, calculate what each promotion needs to deliver.

Start with the revenue an order brings in, subtract its variable costs, and find the ROAS required to cover advertising. Then compare that threshold with your campaign results and the profit your business needs.

A strong Black Friday offer should make sense for your customers and for your store’s economics.

About the data#

AdScale analyzed anonymized, aggregated data from stores using its platform, comparing October 1–31, 2025, with November 28–December 1, 2025. Outliers were excluded from the analysis. The BFCM window included more than 1,900 stores and 413,000 orders.

Discount figures cover order-level discounts, such as codes and automatic discounts. They do not include sale prices set directly on products. Google Ads and Meta ROAS figures are platform-reported.

The jacket example is illustrative. The analysis does not establish the actual contribution margin or profit of the stores included.