What Is Customer Lifetime Value (LTV)?

What it is

Customer lifetime value, or LTV, is the total profit one customer brings you over the entire time they stay with you. Not just the first job — every job, every year, plus the referrals and reviews that come from keeping them happy. It’s the difference between thinking of a customer as a single $300 repair and thinking of them as $3,000 of work over five years.

For contractors, this is one of the most overlooked numbers in the business. Most people quote and bill one job at a time, so they think one job at a time. LTV asks a bigger question: what is this relationship actually worth before it ends?

How to calculate it

You don’t need a finance degree. A workable estimate uses three things you already roughly know:

Average job value × jobs per year × years a customer stays = total revenue

Then take the profit portion, because LTV is about profit, not gross revenue.

Here’s a clean example. Say a customer spends about $600 a year with you, stays for 5 years, and your profit margin is 40%:

• $600 × 5 years = $3,000 in lifetime revenue
• $3,000 × 0.40 = $1,200 in lifetime value

That’s a basic version, and basic is fine. You can get fancier by adding the value of referrals — if one happy customer sends you one new customer every couple of years, that’s real money you can fold in. But start simple. A rough LTV you actually use beats a perfect one you never calculate.

The biggest mistake is leaving out the years. A single job might be worth $300, but if a typical customer gives you that job three times over their relationship and refers a neighbor, the lifetime number is several times higher.

Why it matters for contractors

LTV matters because it sets the ceiling on what you can afford to spend to win a customer. This is the whole game. If you don’t know what a customer is worth, every lead price feels too high — because you’re comparing it to a single job instead of the full relationship.

Picture two contractors. One thinks a customer is worth $300 (the first job) and won’t pay more than a few dollars a lead. The other knows a customer is worth $1,200 over time and can comfortably spend $300 to win one and still pocket $900 in profit. The second contractor will outbid the first for every good lead and grow faster — not because they’re reckless, but because they did the math.

LTV also changes how you treat the customers you already have. If a customer is worth $1,200, a follow-up call, a maintenance reminder, or a quick thank-you isn’t a chore — it’s protecting an asset. The longer they stay, the bigger that number grows.

Common mistakes

• Counting only the first job. This is the big one. A customer is rarely worth just their first invoice once you add repeat work and referrals.
• Using revenue instead of profit. A $3,000 customer at a 40% margin is worth $1,200, not $3,000. Spending against the bigger number will burn you.
• Forgetting referrals. Happy customers bring more customers at almost no acquisition cost. Leaving that out understates LTV, sometimes badly.
• Treating every customer the same. A maintenance-plan customer and a one-off emergency call have very different lifetime values. Averaging hides that.
• Calculating it once and forgetting it. Margins, prices, and retention drift. Revisit LTV at least once a year so the number stays honest.

How it relates to consent-first leads

Lifetime value reframes what a lead is worth. If a won customer is worth $1,200 over time, then a lead that reliably turns into a customer is worth far more than its sticker price — and a cheap lead that never books is worth nothing, no matter how little it cost.

That’s the case for consent-first leads. When the person agreed to hear from you, on a channel they chose, and the lead is yours alone, more of those leads become real customers — the kind who come back and refer. You’re not buying a name on a list; you’re buying a shot at a multi-year relationship. Once you know your LTV, paying a flat, predictable price for leads that actually close stops feeling like a cost and starts looking like the best investment in the business.