Do you know the minimum return your advertising must generate to leave you the profit you want? The Target ROAS (target Return On Ad Spend) is the metric that answers: starting from your gross margin and the net profit you want to achieve, it calculates how many euros of revenue you need for every euro spent on advertising. It is the essential tool for those who run campaigns on Google, Meta or Amazon and want to set ROAS goals based on profit, not on arbitrary numbers.

What the Target ROAS is

The ROAS is the ratio between the revenue generated by advertising and the ad spend: a ROAS of 4 means 4 of revenue for every euro spent. The Target ROAS is the minimum ROAS you must reach to obtain a given net profit margin. It is not a universal number: it depends on your margins. With a gross margin of 40% and a profit goal of 15%, the Target ROAS is 4: any value above 4 brings you more profit, below 4 erodes the goal.

Break-even ROAS and Target ROAS

Two thresholds are fundamental. The break-even ROAS is the ROAS at which you neither earn nor lose: it is the inverse of the gross margin (with a 40% margin, break-even ROAS = 2.5). The Target ROAS is higher, because it must also leave room for profit: above the break-even, since the break-even alone is not enough. The difference between the two is your profit cushion. Knowing both tells you what the absolute minimum is (break-even) and what the minimum is to be truly profitable (target).

How the Target ROAS is calculated

The logic is simple. The share of revenue you can spend on advertising is the gross margin minus the target profit: with a 40% margin and a desired 15% profit, you can spend 25% of revenue on advertising. This share is the target ACOS. The Target ROAS is its inverse: 100 / 25 = 4. The formula is Target ROAS = 100 / (gross margin − target profit). The tighter the margins or the more ambitious the profit, the higher the required ROAS.

The target ACOS

The ACOS (Advertising Cost of Sales) is the inverse of the ROAS: the ad spend as a percentage of revenue. The target ACOS is the maximum share of revenue you can devote to advertising while maintaining the desired profit. With a 40% margin and 15% profit, the target ACOS is 25%: if you spend 25% of revenue on advertising, you are left with exactly 15% of profit. Many platforms (Amazon in particular) think in ACOS; this calculator gives you both metrics to work with the one you prefer.

The maximum ad cost per order

The calculator translates the target ACOS into an operational number: the maximum ad cost per order. It is the average order value multiplied by the target ACOS. With an AOV of 80 and an ACOS of 25%, you can spend at most 20 of advertising to acquire an order and maintain the profit. It is a practical ceiling for setting the bids in campaigns: if the cost per acquisition exceeds this threshold, you are eroding your profit goal.

How the calculator works

Enter the gross margin (the percentage of revenue that remains after the direct costs of the product, before advertising), the target profit margin (how much you want to earn net after advertising) and the average order value. The calculator returns the Target ROAS, the target ACOS, the reference break-even ROAS and the maximum ad cost per order, with an assessment of how demanding the goal is. It is the quickest way to translate a profit goal into concrete campaign targets.

The values you need

You need three numbers. The gross margin: (revenue − product cost − direct fulfillment costs) divided by revenue, as a percentage. The target profit margin: the percentage of net profit you want after paying for advertising. The AOV: the average value of an order. The target profit must be lower than the gross margin, otherwise nothing is left for advertising. Try different profit goals to see how the required ROAS changes.

Interpreting the Target ROAS

How demanding it is to reach a given Target ROAS:

A high Target ROAS is not the fault of advertising: it reflects tight margins. It is often better to improve the margin or the AOV before raising the campaign goals.

Target ROAS, break-even and ACOS compared

The three metrics are linked to each other:

ROAS and ACOS are the inverse of each other: ROAS = 100 / ACOS. Use the metric your advertising platform thinks in.

Example: same margin, different target profits

With a gross margin of 40%, how the Target ROAS changes as the desired profit varies:

The more profit you want, the higher the required ROAS: asking more margin from advertising means raising the efficiency bar.

How to reach the Target ROAS

If the ROAS of your campaigns is below the goal, you have two paths: improving the campaigns (more precise targeting, better creatives, keyword optimization, cutting waste) or improving the product economics (raising the margin, increasing the AOV with upsells and bundles, reducing costs). Often the second is more powerful: increasing the AOV or the margin lowers the required Target ROAS, making profitable campaigns that were not before. The ROAS is not improved only with advertising.

What the calculation does not consider

The calculation assumes that the gross margin entered already includes all direct costs (product, shipping, transaction). It does not consider returns, fixed costs (staff, software) or the customer lifetime value (LTV): a ROAS below target on the first order can be acceptable if the customer buys again. It does not account for attribution (which sales to attribute to advertising). It is a per-order profitability threshold: useful for setting the goals, to be supplemented with a broader view.

Common mistakes

• Setting arbitrary ROAS goals, not tied to real margins.
• Using a gross margin that does not include all direct costs (shipping, returns).
• Ignoring the LTV: a high target ROAS on the first order can make sense if the customer buys again.
• Confusing ROAS and ACOS (they are the inverse of each other).
• Raising the campaign goals instead of improving margin and AOV.

How to use the calculator

Enter gross margin, target profit and AOV. Read the Target ROAS and compare it with the actual ROAS of your campaigns: if it is below, you are not reaching the desired profit. Use the maximum cost per order as a ceiling for the bids. Try simulating a higher AOV (with upsells) or a better margin to see how much the required ROAS drops. It is the most concrete way to tie the advertising goals to real profitability.

Practical example

You sell a product with an average order value of 80, a gross margin of 40% and want to obtain a net profit of 15% after advertising. The calculation gives a Target ROAS of 4x, a target ACOS of 25%, a break-even ROAS of 2.5x and a maximum ad cost per order of 20, judged "realistic goal: required ROAS in the normal range". Set the campaigns for a ROAS of at least 4 and do not spend more than 20 to acquire an order. If you do not reach it, consider increasing the AOV or the margin before giving up. Enter your numbers for your real situation. The calculation assumes the gross margin includes the direct costs and does not consider returns, fixed costs or LTV; it is a per-order profitability estimate, not advice.

Frequently asked questions

What is the Target ROAS?

It is the minimum ROAS (revenue divided by ad spend) you must reach to obtain a given net profit margin. With a 40% gross margin and a desired 15% profit, the Target ROAS is 4: you need 4 of revenue for every euro spent on advertising.

How is the Target ROAS calculated?

Target ROAS = 100 / (gross margin − target profit). The difference between gross margin and desired profit is the share of revenue spendable on advertising (target ACOS); the ROAS is its inverse. With a 40% margin and 15% profit: 100 / (40−15) = 100/25 = 4.

What is the difference between Target ROAS and break-even ROAS?

The break-even ROAS is the ROAS at zero profit (100 / gross margin). The Target ROAS is higher because it must also leave room for profit. With a 40% margin: break-even 2.5, target (for 15% profit) 4. The difference is your profit cushion.

What is the ACOS and how does it relate to the ROAS?

The ACOS (Advertising Cost of Sales) is the ad spend as a percentage of revenue: it is the inverse of the ROAS. ROAS = 100 / ACOS. With an ACOS of 25%, the ROAS is 4. Amazon thinks in ACOS, Google and Meta in ROAS: they are the same information.

What is the maximum ad cost per order?

It is how much you can spend on advertising to acquire an order while maintaining the target profit: AOV × target ACOS. With an AOV of 80 and an ACOS of 25%, it is 20. It is the practical ceiling for setting the campaign bids: beyond it, you erode the profit.

Is a high Target ROAS a problem with advertising?

No, it usually reflects tight margins. If your gross margin is low, the required ROAS rises automatically. It is often better to improve the margin or increase the AOV (with upsells and bundles) before demanding higher ROAS from the campaigns.

What gross margin should I enter?

The gross margin after all direct costs: product cost, shipping, transaction and platform fees, but BEFORE advertising. It is the percentage of revenue available to cover advertising and leave the profit. An inflated margin gives an unrealistically low Target ROAS.

Does the Target ROAS consider the customer LTV?

No, it calculates the profitability on the single order. If your customers buy again, you can afford a lower ROAS on the first order because you recover on the following ones. For businesses with high customer lifetime value, the Target ROAS on the first order is a conservative threshold.

How do I reach the Target ROAS?

Two paths: improving the campaigns (targeting, creatives, keywords, cutting waste) or improving the economics (raising the margin, increasing the AOV, reducing costs). Increasing the AOV or the margin lowers the required ROAS, often more effective than optimizing the campaigns alone.

Can the target profit exceed the gross margin?

No, it is impossible: if you want a profit equal to or greater than the gross margin, nothing is left to pay for advertising. The target profit must always be lower than the gross margin; the difference is what you can invest in advertising.

Does it work for Google, Meta and Amazon?

Yes, the Target ROAS is universal: it depends only on your margins, not on the platform. Google and Meta use the ROAS as a campaign goal (target ROAS bidding), Amazon uses the ACOS; the calculator gives you both metrics so you set the goals everywhere.

Is it financial or marketing advice?

No, it is an informational tool that ties the advertising goals to the margins. It assumes the gross margin includes the direct costs and does not consider returns, fixed costs, LTV or attribution. Use it to set the targets, supplementing it with the complete analysis of your economics.

Updated July 2026