The funnel is a ledger
Every marketing plan is secretly an accounting document. CAC, LTV, payback — getting the arithmetic right is not finance's job. It's the strategy.
Strip the creative off any growth plan and what remains is a ledger: what a customer costs, what they're worth, and how long the gap takes to close. Companies discover this at the worst moment — mid-scale, when the CAC that 'worked' meets the cash flow that doesn't.
The founding error is managing to ROAS. Return on ad spend ignores margin, ignores repeat rate, ignores payback timing. A 4× ROAS on a 20% margin product with no retention is a slow bankruptcy with good dashboards.
We build growth models from contribution margin upward: CAC ceilings by segment, payback windows the balance sheet can actually carry, LTV computed from cohorts rather than hope. Boring arithmetic — and it decides everything: budgets, bids, channels, offers.
Founders ask when they'll be big enough to need real marketing finance. The honest answer: at customer number one. Retrofitting unit economics into a scaled machine costs ten times what building on them costs.
— AGENTWAVE, 5 DECEMBER 2025