How to Measure ROI on Your Marketing Spend

There is no universal number, because it depends on your margins, sales cycle, and growth goals. A common rule of thumb is a 5 to 1 revenue-to-cost ratio as strong and roughly 2 to 1 as the break-even zone once delivery costs are included, but treat these as starting points, not laws. The better question is whether your ROI is improving over time and beating your other channels.

Yes. A properly configured CRM, consistent UTM tagging, and a spreadsheet will get most small and mid-market companies a defensible answer. Expensive attribution platforms add value once you have high volume across many channels, but they cannot fix messy underlying data. Get the tracking discipline right first.

Use leading indicators and longer windows rather than expecting immediate conversions. Track branded search volume, direct traffic, engaged sessions, assisted conversions, and self-reported attribution over quarters. These channels usually influence deals rather than close them, so measure their contribution to pipeline rather than demanding last-touch revenue.

CAC is the cost to acquire one customer, while ROI measures the return produced by your total marketing investment. CAC is an input into ROI thinking: a low CAC paired with high LTV drives strong ROI. Watch both, because a channel can have an acceptable CAC while still returning poorly if those customers do not stay or spend.

It depends on what you are measuring. Pure marketing ROI isolates marketing spend, while blended CAC includes sales costs and gives a truer picture of what it takes to win a customer. In B2B, where sales and marketing are tightly linked, tracking both views is worthwhile, but keep them clearly labeled so you never mix the numbers.