LTV/CAC Ratio

The unit-economics health check

The LTV/CAC ratio compares the lifetime value of a customer (the total profit they generate over their entire relationship with a business) to the customer acquisition cost (what it took to win them — marketing, sales, discounts). It answers the most basic question about whether a business model works: does each customer earn back more than it cost to acquire them? It is the core gauge of how efficiently a company spends to grow, and the metric venture investors now demand from Indian startups before writing a cheque.

What good looks like

The widely cited benchmark in India is around 3:1 — each customer should be worth roughly three times what it cost to acquire them — with a healthy range of about 2:1 to 4:1. A related rule is that the CAC payback period (how long it takes to recoup the acquisition cost) should not exceed about 18 months. A ratio below 1:1 means the company is losing money on every customer it acquires — burning capital to buy growth that never pays back.

There is an Indian quirk worth noting: domestic B2B SaaS firms often have acquisition costs 40-60% lower than US peers in rupee terms, but their contract values are also lower, so the ratios end up broadly similar once adjusted. Fintech is the perennial pain point, where high acquisition costs combined with customer churn have destroyed value at many startups.

The profitability turn

The metric came to the fore as India's funding climate shifted. After years of growth-at-any-cost, the 2024-25 environment saw a large share of Indian startups choose profitability and runway over raising more money. Investors now expect a path to profit within two to three years, not five — and the LTV/CAC ratio is the single clearest test of whether that path exists.

A common trap

Many startups, especially in D2C and fashion, *overstate* their LTV by ignoring repeat-purchase rates and gross margins, making the ratio look healthier than it is. An honest LTV must reflect actual margins and realistic customer lifespans.

Why it matters. For anyone evaluating a startup — as an investor, employee or acquirer — the LTV/CAC ratio cuts through revenue-growth hype to ask whether the growth is *profitable*. A company growing fast on a sub-1 ratio is digging a deeper hole with every customer. A healthy, honestly calculated ratio above 3:1 signals a business that can scale sustainably rather than simply spend its way to vanity metrics.