LTV to CAC Ratio

By Federico Donatone · Updated October 15, 2026

Definition

The LTV to CAC ratio compares customer lifetime value (the gross profit a customer brings over the relationship) with customer acquisition cost (the sales and marketing spend needed to win them). A ratio of 1 means you spend as much to win a customer as you earn from them. A higher ratio means each customer returns more than it cost.

How to calculate the LTV to CAC ratio

FormulaLTV to CAC ratio = Customer lifetime value ÷ Customer acquisition costFor example, if a customer brings $150,000 in gross profit over the relationship and it cost $30,000 in sales and marketing to win them, the ratio is $150,000 ÷ $30,000 = 5, often written 5:1.

The ratio is only as honest as its inputs. Before you share it, check four things:

Same scope: LTV and CAC cover the same segment, channel and period.
Gross margin: LTV counts profit after delivery costs, not revenue.
Fully loaded CAC: salaries, commissions, tools and agencies are in, not only ads.
A long enough window: the CAC period covers at least one full sales cycle.

Revenue LTV against an ad-only CAC produces a flattering ratio that falls apart under the first serious question from finance.

How to judge your own LTV to CAC ratio

Investors and finance teams often quote a target ratio as a rule of thumb. Treat any single target as the start of a conversation, not a pass or fail grade. What counts as healthy depends on your cash, your growth goals and how confident you are in each input.

Below 1: every new customer loses money. Fix pricing, targeting or retention before spending more on acquisition.
Just above 1: you earn back acquisition cost, but little is left once overhead is counted.
Very high: you may be underinvesting. If customers are this profitable, more acquisition spend could grow the company faster.
Any level: check payback time too. A strong ratio with a long payback still ties up cash.

From our workLook at the ratio by segment and channel, not only blended. One segment can carry the whole average while another loses money on every deal.

Why the ratio misleads early B2B companies

LTV is a forecast. With little churn history, one optimistic assumption inflates it.
CAC lags. With long sales cycles, this quarter's spend wins next quarter's customers.
Small numbers. A handful of large deals can swing the ratio from great to alarming in one quarter.
Founder time looks free. While the founder sells, CAC looks low because their salary is not counted as sales cost.

That last point is why the ratio often drops when a company moves from founder-led sales to a hired sales team. Plan for the drop instead of treating it as a crisis.

How to improve the LTV to CAC ratio

You can raise LTV, lower CAC, or both. The cheapest gains on the CAC side often come from waste between a booked meeting and a held one.

85.4%of meetings booked 0 to 2 days ahead took place, vs 58.5% of those booked more than 30 days aheadSource: Growth Cab show rate study, 1,380 B2B meetings, 2024 to 2026

Narrow targeting so fewer deals are lost after expensive meetings.
Keep the gap between booking and meeting short, so more meetings take place.
Raise win rate with better discovery and call reviews.
Raise LTV with faster onboarding and planned expansion paths.
Cut tools that do the same job twice.

Raising LTV often takes longer than cutting CAC, but the gain lasts, because it improves every future customer and not only the next campaign. For the full chain from target accounts to closed deals, see our GTM consulting approach.

LTV to CAC Ratio FAQ

What is a good LTV to CAC ratio?

There is no single correct number for every business. Many investors use a rule of thumb, but the right ratio depends on your cash position, payback period and growth goals. Below 1 means you lose money on each customer, and a very high ratio can mean you are underspending on growth.

Can the LTV to CAC ratio be too high?

Yes. A very high ratio often means the company is spending too little on sales and marketing and growing slower than it could. If each customer returns many times its acquisition cost, adding sellers or channels is usually worth testing.

How often should you calculate the LTV to CAC ratio?

Quarterly works for most B2B companies, using a trailing period long enough to cover the sales cycle. Recalculate it by segment and by channel, and keep the definitions fixed so quarters can be compared.

Related terms

Customer Lifetime ValueCustomer lifetime value (CLV, often called LTV) is an estimate of the total gross profit a company earns from one customer over the whole relationship, from first payment to cancellation. Subscription businesses usually calculate it from average revenue per account, gross margin and churn rate. It sets the ceiling on what you can spend to win a customer. Customer Acquisition CostCustomer acquisition cost (CAC) is the total sales and marketing spend in a period divided by the number of new customers won in that period. It includes salaries, commissions, tools, agencies and ads, not just campaign budgets. CAC tells a company whether it can afford the way it grows. Churn RateChurn rate is the percentage of customers, or of recurring revenue, that a company loses during a period. Customer churn counts accounts that cancel or do not renew. Revenue churn counts the recurring revenue lost to cancellations and downgrades. Subscription businesses track churn rate monthly or yearly because it limits how fast they can grow. Net Revenue RetentionNet revenue retention (NRR) is the percentage of recurring revenue a company keeps from an existing group of customers over a period, after adding expansion and subtracting downgrades and churn. Revenue from new customers is excluded. NRR above 100% means the existing base grows on its own. Below 100% means it shrinks. Show RateMeeting show rate is the percentage of booked sales meetings that actually take place. A related metric, the no-show rate, counts meetings the prospect did not attend. Teams that book B2B meetings track both to judge lead quality and booking habits, and to see how much of a full calendar turns into real sales conversations. Win RateWin rate is the percentage of sales opportunities that end in a won deal, out of all opportunities that reached a final outcome. It is calculated as deals won divided by deals won plus deals lost. Win rate shows how well a team qualifies and sells, and it is a core input to pipeline and revenue forecasts.