Lifetime Value

Lifetime Value (LTV) is the total Revenue you expect to collect from a single Buyer over the entire duration of their relationship with your business.

The core formula:

Lifetime Value = Revenue per Buyer per period ÷ Churn Rate

If a Buyer pays you $100/month and your monthly Churn Rate is 5%, that Buyer's Lifetime Value is $100 ÷ 0.05 = $2,000.

The intuition: at a 5% monthly Churn Rate, the average Buyer stays for 1 ÷ 0.05 = 20 months. Twenty months × $100/month = $2,000. The formula just collapses that into one step.

This number is the ceiling on what you can spend to bring in that Buyer and still make Profit.

Lifetime Value is the denominator in nearly every spending decision on your P&L.

It governs Marketing Spend. If your Lifetime Value is $2,000 and you spend $500 per Buyer on Marketing Spend, you have $1,500 of gross value remaining to cover your Cost Structure, earn Profit, and fund growth. If Lifetime Value drops to $800 because Churn spiked, that same $500 leaves only $300 - and your Unit Economics collapse.

It separates Compounders from Wasting Assets. A business with rising Lifetime Value can reinvest more per Buyer and still grow Profit. A business with compressing Lifetime Value must cut Marketing Spend, slow growth, or accept losses. This is the mechanism behind what you learned in the Churn Rate lesson - it is how Churn Rate separates the two.

It sets the Payback Period on every new Buyer. You spend real money today to bring in Buyers whose Lifetime Value arrives over months or years. The ratio of that upfront Marketing Spend to Lifetime Value tells you how many months of Revenue you need before a Buyer becomes profitable. This directly affects Cash Flow - a long Payback Period means you are financing growth out of your own pocket.

The Core Formula

LTV = Revenue per Buyer per period ÷ Churn Rate

This assumes constant Revenue per Buyer and constant Churn Rate, which is wrong in practice but useful as a base case.

The Churn Multiplier

Because Churn Rate sits in the denominator, small changes create large swings:

Halving Churn Rate doubles Lifetime Value. Every time. This is why Churn reduction is often the highest-ROI investment on the P&L - you already knew Churn Rate was powerful, and this table shows you the exact dollars at stake.

Expansion Revenue Changes the Equation

If Buyers increase their spending over time through Upsell or Expansion Revenue, Lifetime Value grows beyond what the simple formula predicts. A Buyer who starts at $100/month but grows to $300/month by month 12 has a much higher Lifetime Value than the formula using their initial $100 would suggest.

When Expansion Revenue from existing Buyers exceeds the Revenue lost from Buyers leaving, you have [UNDEFINED: net negative churn]. This is the hallmark of elite SaaS businesses and the strongest possible signal of a Compounder.

Discounting for Time

A dollar collected 24 months from now is worth less than a dollar today. For longer Time Horizons, Operators apply a Discount Rate to future Revenue to compute a Discounted Cash Flow version of Lifetime Value. This matters most when Churn Rate is very low (long lifetimes) and the Discount Rate is meaningful - say, above 10% annually. For high-Churn businesses where the average Buyer stays 10-12 months, the Discount Rate barely changes the number.

Setting Marketing Spend Budget. Lifetime Value tells you the maximum you can pay to bring in a Buyer. Most Operators target Marketing Spend per Buyer at roughly one-third of Lifetime Value to leave room for Cost Structure and Profit.

Evaluating Churn reduction investments. If reducing monthly Churn Rate from 5% to 3% increases your Lifetime Value from $2,000 to $3,333, multiply that $1,333 increase by your total Buyer count to get the total value created. Compare it to the Implementation Cost of the initiative. This is an ROI calculation where the "R" is the Lifetime Value delta.

Segmenting Buyers. Not all Buyers have the same Lifetime Value. Different segments churn at different rates and generate different Revenue. Computing Lifetime Value per segment using customer segmentation tells you where to concentrate resources - a pure Allocation decision.

Evaluating Pricing changes. Raising Pricing increases Revenue per period but may increase Churn Rate. Lifetime Value lets you model the net effect: if a 20% price increase causes a 15% jump in Churn Rate, does total Lifetime Value go up or down? Run both sides of the formula.

Lifetime Value sits at the intersection of your two prerequisites: Revenue provides the numerator (how much each Buyer pays per period) and Churn Rate provides the denominator (how quickly Buyers leave). You already learned that Revenue is the ceiling on Profit, and that Churn Rate is the single number separating a Compounder from a Wasting Asset. Lifetime Value is the mechanism through which Churn Rate exerts that power - it translates an abstract percentage into concrete dollars per Buyer. Downstream, Lifetime Value feeds directly into Unit Economics: it is the value side of the value-vs-cost equation that determines whether your business model works. It governs how aggressively you can set your Marketing Spend Budget, defines the Payback Period for every new Buyer, and determines whether Expansion Revenue from Upsell can outpace losses from Churn. When you reach Discounted Cash Flow and NPV, you will refine this formula by applying a Discount Rate to future Revenue streams - but the core insight holds: Churn compresses Lifetime Value, and Lifetime Value controls nearly every Allocation decision on your P&L.