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Break-Even ROAS Table by Gross Margin

Break-even ROAS from 20-80% gross margin, contribution-margin haircuts for COGS, shipping and fees, and a target ROAS ladder by growth goal.

Updated 2026-05-0710 min read

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Break-even ROAS is not a growth target; it is the floor below which every extra dollar of spend loses money. This table converts gross margin into break-even ROAS, then layers shipping, fees and returns so you can set a real ladder — harvest, healthy profit, or aggressive growth — instead of copying someone else's 3.0x.

The only formula that matters is one over margin

Break-even ROAS equals 1 divided by gross margin as a decimal. That identity does not care about your industry, your dashboard or what a competitor screenshots. If you cannot name the margin you are dividing into 1, you do not have a ROAS target — you have a wish. The locked table is that identity filled in across the 20-80% margin range, one row at a time, so nobody on the team has to do the division in a meeting while spend is already live. Use it as a lookup, not as a debate.

Gross margin is the wrong input if you ignore the other haircuts

Catalogue gross margin (price minus COGS) overstates what a paid order actually keeps. Shipping you eat, payment fees, packaging, and a returns reserve all sit between 'gross' and contribution. Using 55% gross when contribution after those lines is 38% is how a 2.2 ROAS looks profitable in Ads Manager and loses money in Shopify. The second table is the deduction stack: which costs come off before you compute break-even, and the worked identity using contribution margin instead of headline gross. If you only remember one habit, compute break-even on contribution, not on the product-cost percentage your supplier quoted.

Break-even is the floor; the ladder is the strategy

Once you have the floor, you still need a goal. Aggressive growth lives near the floor (you reinvest). Healthy profit sits a numbered multiple above it. Harvest sits higher still and will shrink volume on purpose. Modest profit is the default when cash is fine and you are not trying to buy the category. Copying a 4.0 target onto a 70% margin digital product is leaving demand on the table; copying a 2.0 target onto a 28% contribution product is lighting cash on fire. Pick the rung from the ladder, write it on the campaign, and judge scale decisions against that rung — not against last week's ROAS.

First-order floor vs blended floor are different rungs

A replenishment brand can buy above the first-order break-even if the 60- or 90-day blended return still clears the contribution floor with room to spare. A one-and-done brand cannot. The last table is when you are allowed to use blended ROAS as the live buying target, and how much first-order may undershoot the floor while you wait for repeat. None of that replaces knowing the floor. Creative volume is how you hit a tight floor without praying — batching UGC from a product URL in Klip Kanvas is cheaper than raising prices to make a lazy 3.0x target feel safe.

5 tables inside: break-even ROAS at 20-80% gross margin, contribution-margin haircuts (COGS, ship, fees, returns), the target ROAS ladder by growth goal, worked examples, and first-order vs blended rules for when you may buy above the first-order floor.

Break-even ROAS = 1 ÷ gross margin

20% gross margin: BE ROAS 5.00 · 1 ÷ 0.20
25% gross margin: BE ROAS 4.00 · 1 ÷ 0.25
30% gross margin: BE ROAS 3.33 · 1 ÷ 0.30
35% gross margin: BE ROAS 2.86 · 1 ÷ 0.35
40% gross margin: BE ROAS 2.50 · 1 ÷ 0.40
45% gross margin: BE ROAS 2.22 · 1 ÷ 0.45
50% gross margin: BE ROAS 2.00 · 1 ÷ 0.50
55% gross margin: BE ROAS 1.82 · 1 ÷ 0.55
60% gross margin: BE ROAS 1.67 · 1 ÷ 0.60
65% gross margin: BE ROAS 1.54 · 1 ÷ 0.65
70% gross margin: BE ROAS 1.43 · 1 ÷ 0.70
80% gross margin: BE ROAS 1.25 · 1 ÷ 0.80

Haircuts: contribution margin, not catalogue gross

Contribution margin formula: (Price − COGS − shipping you eat − packing − payment fees − returns reserve) ÷ price · use this %, not catalogue gross
Payment fees (typical card + Shopify-like): 2.9% + $0.30 per order · on a $50 AOV ≈ 3.5% of price
Shipping you eat: Subtract $ as % of AOV · e.g. $6 ship on $50 AOV = 12% haircut
Returns reserve: Apparel 15-30% of revenue · beauty/supplements 3-8% · jewellery 5-12%
Worked: 55% gross, $50 AOV, $6 ship, 3.5% fees, 5% returns: Contribution ≈ 55% − 12% − 3.5% − 5% = 34.5% · BE ROAS 1 ÷ 0.345 = 2.90 not 1.82
Worked: 40% gross, $80 AOV, customer pays ship, 3.2% fees, 8% returns: Contribution ≈ 40% − 3.2% − 8% = 28.8% · BE ROAS 3.47
Rule: Always run BE on contribution % · using catalogue gross understates the floor by 0.3-1.5 ROAS points in the accounts we see

Target ROAS ladder (multiple of contribution break-even)

Aggressive growth (reinvest): 1.00-1.15 × BE · volume over near-term profit · cash must fund 30-60d
Modest profit (default scale): 1.30 × BE · e.g. contribution BE 2.50 → target 3.25
Healthy profit: 1.40-1.50 × BE · matches 'comfortably profitable' (50% GM → ~2.8 on gross; use contribution if haircuts apply)
Harvest / cash extraction: 1.80-2.00 × BE · expect volume to fall 20-40%
Survival / keep lights on: 1.00 × BE · no scale · fix AOV or costs
30% contribution example: BE 3.33 · growth 3.33-3.83 · modest 4.33 · healthy 4.66-5.00 · harvest 6.00-6.66
50% contribution example: BE 2.00 · growth 2.00-2.30 · modest 2.60 · healthy 2.80-3.00 · harvest 3.60-4.00
70% contribution example (digital-like): BE 1.43 · growth 1.43-1.64 · modest 1.86 · healthy 2.00-2.15 · harvest 2.57-2.86

Worked identity checks (do this before you set the campaign)

AOV $45 · contribution 42%: BE 2.38 · modest target 3.09 · max CPA at BE = $45 × 0.42 = $18.90
AOV $70 · contribution 35%: BE 2.86 · modest target 3.72 · max CPA at BE = $24.50
AOV $120 · contribution 50%: BE 2.00 · modest target 2.60 · max CPA at BE = $60
AOV $30 · contribution 28%: BE 3.57 · modest target 4.64 · max CPA at BE = $8.40 · if observed CPA is $22, maths fails before creative
Max CPA at break-even: AOV × contribution % · equivalent to AOV ÷ BE ROAS
If target ROAS < BE: You are choosing to lose money on purpose · only valid as a cash-funded customer-acquisition test with a written stop date

First-order floor vs blended floor

One-and-done verticals: Live buying target ≥ first-order BE · blended lift is a bonus
Consumable / replenishment: First-order may run at 0.70-0.90 × BE · 60-90d blended must still clear 1.30 × BE
If 90d blended still < BE: The repeat loop is not real yet · raise first-order target to 1.00 × BE until cohort data proves otherwise
Refund / return lag: Hold 7-30d of 'profit' as reserved · do not scale on day-3 ROAS in refund-heavy offers
Platform ROAS vs contribution BE: Platform ROAS is typically 20-45% optimistic vs Shopify · compare blended/Shopify to BE, not Ads Manager ROAS to BE
Changing prices or COGS: Recompute BE the same day · a 5-point margin move at 40% GM shifts BE from 2.50 to 2.86

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