Break Even ROAS Calculator

Break Even ROAS (Return on Ad Spend) is the minimum ROAS your campaign must achieve before your ads stop costing you money. If your ROAS is above your break even number, every sale generated by your ads is contributing to profit. Below it, you are losing money with every order your ads drive.

The formula is straightforward: Break Even ROAS = 1 / Gross Margin. If your product has a 40% gross margin after accounting for product cost, packaging, and shipping, your break even ROAS is 2.5x. That means for every $1 you spend on ads, you need $2.50 in revenue just to cover costs, with nothing left over for profit.

Most media buyers use a target ROAS figure from their platform dashboard without ever calculating whether that number actually corresponds to profitability. Break even ROAS anchors every scaling and kill decision to your actual unit economics rather than gut feel or platform benchmarks.

To calculate your break even ROAS, you need two things: your selling price and your total cost of goods sold (COGS). COGS includes everything you spend to deliver the product to a customer: manufacturing or product cost, packaging, shipping, and any other per-unit costs like returns reserves or transaction fees.

The steps are:

• Total COGS = product cost + packaging + shipping + any other per-unit costs
• Gross Profit = selling price - total COGS
• Gross Margin = gross profit / selling price (as a decimal)
• Break Even ROAS = 1 / gross margin

Example: You sell a product for $60. Product cost is $18, packaging $3, shipping $5. Total COGS = $26. Gross profit = $34. Gross margin = 34/60 = 56.7%. Break even ROAS = 1 / 0.567 = 1.76x. Any campaign running above 1.76x ROAS is profitable at the gross level.

Note that break even ROAS at the gross level does not account for overheads, staff, or software costs. To also cover those, you will want to target a ROAS meaningfully above your break even threshold, typically 1.5x to 2x your break even number.

There is no universally "good" ROAS for Facebook ads because profitability depends entirely on your margins. A 3x ROAS might be excellent for a brand with 60% gross margins and genuinely bad for one with 25% margins. The only ROAS number that matters is yours, based on your own cost structure.

That said, here are rough breakpoints most DTC and ecommerce brands land in:

• Below 2x ROAS: Almost always unprofitable unless you have exceptional lifetime value and repeat purchase rates that offset acquisition costs.
• 2x to 3x ROAS: Breakeven range for most brands with 40-50% gross margins. Not scaling territory unless your contribution margin math supports it.
• 3x to 4x ROAS: Profitable for most brands. Worth exploring scale if ROAS holds as you increase budget.
• Above 4x ROAS: Strong signal. Scale aggressively as long as you are not hitting frequency caps or seeing rapid creative fatigue.

Use the calculator above to find your specific break even point. Once you have that number, set your target ROAS at least 20-30% above it to leave room for day-to-day variance and platform auction fluctuations.

MER stands for Marketing Efficiency Ratio. The formula is simple: MER = Total Revenue / Total Marketing Spend. While ROAS is measured at the campaign or ad set level by your ad platform, MER is measured at the business level using your actual revenue and your total marketing spend across all channels.

ROAS from your Facebook Ads Manager is platform-attributed, which means it counts revenue that Facebook claims credit for. That number is almost always inflated due to view-through attribution, overlapping attribution windows, and the fact that some customers who saw an ad would have purchased anyway. MER cuts through this by looking at your real bank account: how much did you actually spend on marketing, and how much revenue did the business generate in the same period?

For example, if your business generated $80,000 in revenue in a month and you spent $20,000 across Facebook, TikTok, and Google ads, your MER is 4x. That is a trustworthy signal of overall marketing efficiency regardless of what any individual platform dashboard reports.

Smart operators track both. ROAS at the campaign level helps you make creative and budget decisions within a platform. MER at the business level tells you whether your marketing engine is actually profitable when you strip away attribution noise.