1 ÷ net margin. The minimum return on ad spend to cover costs, as a ratio.
Find the minimum ROAS you need to cover your costs and not lose money on advertising.
Break-even ROAS is the minimum return on ad spend required for your advertising to be profitable — or more precisely, to not lose money. At break-even ROAS, every dollar you spend on advertising is exactly offset by the gross profit from the resulting sales.
Any ROAS above break-even means you're making money. Below it, you're paying more for ads than the gross profit they generate.
5.0x
Break-even ROAS2.5x
Break-even ROAS1.67x
Break-even ROASThe calculation is straightforward once you know your gross margin:
For example, with a 40% gross margin and 5% overhead, your net margin is 35%. Break-even ROAS = 1 ÷ 0.35 = 2.86x. You need $2.86 in revenue for every $1 in ad spend just to break even.
1 ÷ (Gross Margin / 100)
Using gross margin only1 ÷ ((Gross Margin − Overhead) / 100)
Accounting for additional variable costsUse break-even ROAS as your floor when setting ROAS targets. Your actual target ROAS should be higher — accounting for profit goals, LTV, and margin for overhead. A common rule: target ROAS = break-even × 1.5–2x.
If a campaign is running below break-even ROAS, it's actively destroying margin. Use break-even ROAS as a clear threshold for pausing or restructuring campaigns that aren't profitable.
When testing a new ad platform, break-even ROAS gives you a clear success criteria. If TikTok Ads can't hit break-even ROAS after a testing period, the unit economics don't work for that channel.
As you scale ad spend, ROAS typically declines because you exhaust high-performing audiences. Break-even ROAS defines the lower bound — the minimum acceptable point as you push budgets higher.
You can improve break-even ROAS in two ways: increase your margins, or reduce the costs that factor into it.