The $140 CAC Breakeven Math Every DTC Brand Should Run

Median DTC CAC has climbed to $130-155, up roughly 60% in five years.

Here's what the first-purchase math actually looks like at those rates.

Shopify brand builder (beauty, supplements, or mid-range consumer), 35% COGS, typical shipping ($12) and ops overhead ($15 per order):

• $200 AOV: contribution $103, CAC $140, first-order P&L -$37
• $250 AOV: contribution $135, CAC $140, first-order P&L -$5
• $260 AOV: contribution $142, CAC $140, first-order P&L +$2

First-purchase breakeven lands around $260 AOV under these assumptions. Most Shopify brand builders at $50-200 AOV aren't breaking even on the acquisition order. They're investing in LTV from day one.

That reframes the question. A brand at $120 AOV paying $140 in CAC is buying one specific thing: the right to sell to that customer again with no acquisition cost attached. The first order was never where the money was. Whether it compounds depends entirely on the 60-day and 90-day repeat rates.

Operators who've built this correctly run the cohort LTV model in Polar Analytics or Triple Whale before they adjust budget. Blended ROAS tells you what you spent versus what came back in aggregate. Cohort LTV tells you whether the customers you acquired last quarter are worth what you paid for them - and whether the ones you're acquiring this quarter will be.

The "DTC is dead" conversation is usually coming from brands whose cohort LTV curves don't clear current CAC at their AOV. The ones not having that conversation have either pushed AOV above the breakeven line or built repeat rates that justify paying $140 for a customer who doesn't clear it on the first order.

Checking which side of that line you're on takes one cohort LTV pull in Polar or Triple Whale.