Unit Economics Metrics That Investors Actually Care About

What Investors Want to See

When evaluating startups, investors focus on unit economics to assess:

Is the business model viable?

Can it scale profitably?

How efficiently does it use capital?

The Core Metrics

1. LTV:CAC Ratio

**What it shows:** Return on customer acquisition investment

**Target:** 3:1 or higher

Red flags:

Below 2:1 for SMB

Below 4:1 for Enterprise (longer sales cycles justify higher ratio)

2. CAC Payback Period

**What it shows:** How fast you recover acquisition costs

**Target:**

Under 12 months (SMB)

Under 18-24 months (Enterprise)

**Why it matters:** Determines how much capital you need to grow

3. Gross Margin

**What it shows:** Unit profitability before overhead

**Target:**

70%+ for pure software SaaS

50-70% for services-heavy models

40%+ for marketplace/payments

4. Net Revenue Retention (NRR)

**What it shows:** Revenue growth from existing customers

Target:

100%+ (baseline)

110%+ (good)

120%+ (excellent)

How to Present Your Metrics

Show Trends, Not Just Snapshots

Investors want to see improvement over time:

"Our LTV:CAC improved from 2.1x to 3.4x over 12 months"

"CAC decreased 30% as we optimized channels"

Segment Where Relevant

Different customer types may have different economics:

"Enterprise segment: 4.5:1 LTV:CAC, 18-month payback"

"SMB segment: 2.8:1 LTV:CAC, 10-month payback"

Be Honest About Methodology

Explain how you calculate each metric. Investors will ask.

Include Cohort Data

Show retention curves and how they've improved over time.

What Investors Dig Into

Questions They'll Ask

How do you calculate LTV? What assumptions?

What's included in CAC?

How do different channels compare?

What's driving NRR?

How does unit economics vary by segment?

Documentation to Prepare

Detailed metric calculations

Monthly data for 12+ months

Cohort retention charts

Channel breakdowns

Segment analysis

Benchmarks by Stage

Seed Stage

LTV:CAC > 2:1 (directional)

Improving trends more important than absolute numbers

Small sample sizes accepted

Series A

LTV:CAC > 3:1

CAC payback < 18 months

6+ months of consistent data

Cohort retention analysis

Series B+

LTV:CAC > 3:1 proven at scale

CAC payback < 12 months

NRR > 100%

Detailed segment analysis

Red Flags Investors Watch For

**Metrics that don't match story** - Claims of efficiency with poor numbers

**Inconsistent definitions** - Changing calculations between periods

**Missing negative data** - Not showing churn or losses

**No trend data** - Only showing best month

**Unrealistic projections** - "CAC will drop 50% magically"

Building Your Deck

Slide Structure

Overview of key metrics (headline numbers)

Trends over time (graphs)

Cohort analysis (table)

Segment breakdown (if relevant)

Improvement drivers (what you've done)

Visual Best Practices

Clean, simple charts

Consistent time periods

Clear labels and legends

Highlight key insights

Conclusion

Unit economics tell the story of your business model. Present them clearly, honestly, and with context. The goal isn't to show perfect numbers—it's to demonstrate understanding and improvement trajectory.

Use Valthentic to generate investor-ready unit economics slides automatically from your data.