Connecting marketing to revenue. CAC, LTV, payback period. Reading a P&L and defending budgets in language a CFO believes.
Revenue, cost of goods, gross profit, operating costs (your budget lives here), operating profit. If you cannot find marketing on a P&L, you cannot defend it.
CAC, LTV, payback period, contribution margin. Build these in a spreadsheet. Understand how they connect: if CAC exceeds LTV, you are losing money on every customer, no matter how good the ROAS looks.
Go beyond ROAS. Paid search might show 4x return but 70% is branded (people who would have bought anyway). Email might look small but has 60% repeat order margin. A busy channel and a profitable channel are not the same thing.
Use Claude or ChatGPT to build financial models, calculate break-even points, and stress-test assumptions. The maths is fast. The judgment on which assumptions to trust is yours.
The question is not 'is this channel performing?' It is 'is this channel making the business more money than it is costing?' A busy channel and a profitable channel are not the same thing.