What it means
LTV answers a simple question: across the entire relationship, how much profit will this customer generate? It's a forward-looking estimate, not an accounting fact, and it forces you to be honest about three things — what you actually charge, what it costs to deliver, and how long customers stay.
Use gross margin, not revenue. A subscription that grosses AED 1,000/month but costs AED 600 to deliver is worth a lot less than the same subscription delivered at 80% margin. And use a churn rate you can defend with data, not the rate you wish you had.
Worked example
A Gulf B2B SaaS bills AED 500/month per customer at a 70% gross margin. Monthly logo churn sits at 4%.
LTV = (500 × 0.70) ÷ 0.04 = AED 8,750 per customer.
If their CAC is AED 3,000, LTV:CAC ≈ 2.9 — right at the 3:1 threshold. Either churn has to come down or expansion revenue has to come up.
Why it matters
LTV is the second half of the unit-economics conversation. Without it, CAC is just a cost. With it, you can decide how much to spend per channel, which segments to double down on, and whether retention or acquisition deserves the next dollar.
Common mistakes
- Using revenue instead of gross profit — inflates LTV by 20–60%.
- Using "best month ever" churn instead of a trailing average.
- Calculating one LTV across very different segments (SMB vs enterprise).
- Counting expansion revenue you haven't actually earned yet.
Compare to ~3× your CAC.
Example — Lifetime Value in practice
Imagine Almarai launches a hypothetical fresh-dairy home subscription in Riyadh at 150 SAR per month, with 70% gross margin and an average customer staying subscribed for 20 months before churning. LTV = 150 × 0.70 × 20 = 2,100 SAR per customer. Almarai's growth team uses that number to decide how much they can afford to spend acquiring each new subscriber.
لنتخيل أن المراعي تُطلق اشتراك توصيل ألبان طازجة افتراضيًا في الرياض بسعر 150 ريالًا شهريًا، بهامش ربح إجمالي 70% ومتوسط بقاء العميل مشتركًا 20 شهرًا قبل التوقف. القيمة الدائمة للعميل = 150 × 0.70 × 20 = 2,100 ريال لكل عميل. يستخدم فريق النمو في المراعي هذا الرقم لتحديد المبلغ الذي يمكنهم إنفاقه لاستقطاب كل مشترك جديد.
Lifetime Value, properly understood
LTV = (Average revenue per customer × Gross margin %) ÷ Customer churn rate. Dividing by churn rate is really a shortcut for multiplying by implied average customer lifespan, since 1 ÷ churn rate approximates how many periods the average customer sticks around; multiplying by gross margin rather than raw revenue matters because the output is meant to represent profit available to reinvest in acquisition, not top-line revenue. The inputs are cross-functional: gross margin and revenue per customer come from finance, churn rate comes from the subscription or billing system — LTV is rarely owned cleanly by one team, which is exactly why it gets miscalculated so often.
The churn rate plugged into this formula is almost always a blended average across the whole customer base, which quietly assumes every customer churns at the same constant rate forever. Real cohorts don't behave that way — churn is typically much higher in the first 90 days and settles lower once a customer is embedded — so a blended-churn LTV overstates value for new, unproven segments and understates it for mature, sticky ones. Cohort-based LTV, built from actual revenue observed per cohort over real elapsed months, is more accurate but takes longer to accumulate the history needed to compute it.
LTV only means something next to CAC, via the LTV:CAC ratio, and next to CAC payback period — a high LTV with a slow payback can still starve a cash-constrained business even when the ratio on paper looks perfectly healthy, because the cash to fund the next acquisition cohort hasn't come back yet.
Gulf subscription businesses add two wrinkles worth tracking separately: household or family-plan accounts, common in telco and streaming bundles, mean the "customer" in the formula is sometimes a multi-user account rather than one payer, which changes what average revenue per customer actually represents; and long payment cycles for annual, invoice-based enterprise plans mean gross margin should be checked against actual collections, not just booked revenue, since a slow or partial payer inflates LTV on paper without delivering the cash the formula assumes.
Put it to work
- Confirm whether the churn rate used is blended or cohort-based before trusting the LTV output.
- Use gross margin, not raw revenue, in the calculation to reflect reinvestable profit.
- Recompute LTV by cohort where enough history exists, especially for newer segments.
- Pair LTV with CAC payback period, not just the LTV:CAC ratio, to check cash health.
- Revisit LTV inputs whenever gross margin or churn trends shift materially.
- Check whether "customer" means an individual payer or a multi-user household account before averaging revenue.
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