The LTV/CAC Slide Investors Expect in Your Pitch Deck

Why this slide belongs in every startup deck

Revenue growth shows that customers are buying. Unit economics shows whether buying more customers creates or destroys value. Investors need both. When LTV and CAC are buried in a projections table, they cannot see the acquisition engine, the cash requirement, or the assumptions carrying the valuation.

A strong slide answers four questions immediately: what a customer is worth, what it costs to acquire one, how long the cash takes to return, and whether those numbers are improving by cohort. Where this slide sits relative to problem, traction, and ask, I cover in my full pitch deck structure guide.

The six elements to include

1. Customer Lifetime Value. Use gross profit or contribution profit, not revenue. Label the period and formula.
2. Fully loaded CAC. Include media, sales compensation, agencies, creative, tools, and the costs required to convert a new customer.
3. LTV:CAC ratio. Show the current ratio and at least one prior cohort or period so the direction is visible.
4. CAC payback. A good ratio with a 30-month payback can still create a financing problem.
5. Segmentation. Show the channel, customer segment, geography, or product tier that materially changes the economics.
6. Action plan. Name the two or three initiatives expected to improve LTV, CAC, or payback over the next 90 days.

What makes investors distrust the numbers

• Using revenue-based LTV while describing it as customer value.
• Showing paid-media CAC while excluding sales and creative costs.
• Mixing organic and paid customers into one blended number.
• Using a mature cohort for LTV and a recent month for CAC.
• Presenting a point estimate without showing the retention curve.
• Using an old ratio after pricing, channel mix, or ad costs changed.

A simple investor-ready layout

Put LTV on the left, CAC on the right, and the ratio in the center. Add payback beneath CAC. Use the lower half for the retention or cohort evidence and a short assumptions box. The last line should state the operational decision the slide supports.

Do not wait for perfect data

Early-stage companies rarely have a statistically mature lifetime value. That is not a reason to omit the slide. Separate observed data from assumptions. Show retention to date, explain the extrapolation, and include a conservative case. Investors trust transparent uncertainty more than a precise number with hidden assumptions — and the trust compounds when you keep reporting the same numbers after the round, which is why I track LTV, CAC, and payback in my monthly investor update template.