What is break-even ROAS and how is it calculated?

Break-even ROAS is the point where advertising exactly pays for itself, neither earning nor losing money. It equals 1 divided by your gross margin. At a 40% margin, break-even ROAS is 1 ÷ 0.40 = 2.5. It means every $1 you spend on ads must generate at least $2.50 in revenue just to break even.

What is the difference between ROAS and ACOS?

ROAS is revenue from ads divided by ad spend (3 means $3 of revenue per $1 spent). ACOS is the inverse, ad spend divided by revenue, expressed as a percentage. Break-even ACOS equals your margin: at a 40% margin, break-even ACOS is 40%.

Why calculate break-even from margin, not revenue?

You only keep your margin from ad-driven revenue; the rest covers the cost of the goods. Advertising is therefore measured against margin, not full revenue. Judging by revenue alone makes most campaigns look profitable even when they actually lose money.

Does the calculator include VAT, returns and repeat purchases?

No, it is a quick per-order estimate. You can fold packaging, shipping and payment fees into margin using the extra-costs field. Returns, taxes and lifetime value (LTV) are not included; they shift the result depending on your business.

Calculator for online stores

At what ROAS does advertising pay off?

Q: What ROAS should I target so ads are profitable?

Anything above break-even ROAS is profit. A safe buffer is roughly 20 to 30% above break-even so the campaign can absorb returns, seasonality and imperfect tracking. With a break-even of 2.5, a sensible target is around 3.0 to 3.3.

Break-even ROAS is the line below which ads lose money, even when they look like they are selling. It comes from your margin, not your revenue. Enter your numbers and instantly see where your break-even sits and whether your ROAS earns or subsidizes your campaigns.

Your numbers

Gross margin

The share of revenue left after the cost of goods. This number sets your break-even line.

Average order value

USD

Revenue ÷ number of orders. Used to convert any extra per-order costs into margin.

Monthly ad budget

USD

How much you spend monthly on paid advertising (PPC, social, marketplace). Used to work out profit or loss.

Your ROAS (achieved or target)

3.0×ROAS

ROAS = revenue from ads ÷ ad spend. Find it in Google/Meta Ads, or work it out: campaign revenue ÷ money spent.

At a 40% margin, your break-even is

2.5×

You need at least $2.50 in revenue from every $1 spent on ads, otherwise advertising loses money.

40%

break-even ACOS (max ad share of revenue)

3.1×

safe target (+25% buffer)

+$400

profit from ads / month at your ROAS

Your ROAS versus the break-even line

2.5×

Break-even

3.0×

Your ROAS

You are +0.5× above the line. Ads are profitable.

Get an audit with an action plan →

A low ROAS is often not the ad's fault but a weak site. The audit shows where you lose orders.

Get practical tips on improving your store's conversion and ad performance:

How to move the break-even in your favor

Break-even ROAS is not fixed. You can lower it (so a smaller ROAS is enough) or get more from every customer. Here are the three levers you have.

Increase margin

Higher margin = lower break-even ROAS
Cut shipping subsidies and gateway fees
Add-ons and bundles with higher margin

Raise order value

Free-shipping threshold above your AOV
Related products in the cart
Volume discounts

Improve site conversion

Same ads, more orders = higher ROAS
Speed, trust, an easy checkout
The cheapest way to lift ROAS

Most stores don't have an ad problem, they have a problem with what happens after the click. A KonvertiQ audit runs your store through 60 conversion signals and shows where paid traffic leaks orders, which is where you raise ROAS without a bigger budget.

How we calculate it

No magic, just plain arithmetic you can verify yourself. Every term explained in simple language.

Break-even ROAS and the core formula+

From ad-driven revenue you only keep your margin; the rest covers the cost of goods. Advertising pays for itself only once the margin it generates covers its cost.

break-even ROAS = 1 ÷ margin
profit from ads = budget × (your ROAS ÷ break-even ROAS − 1)

Example (40% margin, $2,000 budget)	Value
Break-even ROAS	2.5×
Your ROAS	3.0×
Profit from ads / month	+$400

At a 3.0 ROAS, $2,000 turns into $6,000 of revenue; the margin on that is $2,400, minus $2,000 of ad spend → +$400 profit.

ROAS versus ACOS, two views of the same thing+

ROAS = revenue ÷ spend (3× means $3 of revenue per $1 of ads). ACOS = spend ÷ revenue as a percentage, common on marketplaces like Amazon. ACOS = 1 ÷ ROAS. Break-even ACOS equals your margin: at a 40% margin, break-even ACOS is 40%.

Extra variable costs and why they raise break-even+

If you subsidize shipping and pay for packaging and payment fees, those costs reduce your margin on every order. The calculator converts them through your average order value into a percentage and lowers your effective margin, pushing break-even higher. Example: a 40% margin with $4 of costs on a $45 order means an effective margin of about 31% and a break-even ROAS near 3.2×.

What ROAS to target to actually profit+

Break-even is zero, not a goal. A sensible buffer is 20 to 30% above break-even so the campaign can absorb returns, seasonality and imperfect conversion tracking. The calculator shows this "safe target" in a tile. Watch the opposite extreme too: a target ROAS that is too high often means you are needlessly capping growth you could spend into profitably.

How accurate is this calculator+

It is a quick per-order estimate, not accounting. It excludes VAT, returns and lifetime value (LTV), which often improves the case for advertising. Use it to know where your zero is and whether it pays to spend more or less at your current ROAS.