Customer Lifetime Value: How to Calculate It, Then Grow It

Customer lifetime value is the total amount a customer spends with you across their whole relationship with your brand, and it is the number I wish more founders obsessed over. Most business owners I work with can quote their ROAS to two decimal places but have no idea what a customer is actually worth over two or three years. That blind spot warps every decision, because when you only see the first order, you underspend on the customers you already have and overspend chasing strangers.

How to calculate customer lifetime value

The simple version needs three numbers you already have in Shopify or whichever platform you run. Your average order value. How many orders a typical customer places per year. How many years a customer keeps buying from you. Multiply them together.

Say your average order is $80, a typical customer buys three times a year, and they stick around for two years. Lifetime value is $80 x 3 x 2, which is $480. Suddenly that $30 you spent acquiring them looks very different to how it looked against a single $80 order.

There are fancier versions that layer in gross margin and churn curves. Ignore them for now. A rough number you actually track every month beats a perfect number you calculate once and forget. In my book I ask founders to track eight business numbers daily in a plain spreadsheet: revenue, cost of goods sold, rough profit, website visitors, average order value, number of orders, marketing efficiency ratio, and fixed costs as a percentage of revenue. If you have that tracker running, lifetime value falls straight out of it.

Why lifetime value matters more than your next campaign

Marketing efficiency ratio is all your paid ad spend divided by total revenue, and for most businesses a healthy range is 15 to 35 per cent. Here is the uncomfortable maths: if every dollar of revenue comes from a first-time buyer you had to pay to acquire, staying inside that band is brutal. Repeat customers are the revenue that arrives without a matching acquisition cost. They are how the ratio stays healthy while the business grows.

There is a behavioural reason to care too. 88 per cent of consumers say it takes three or more purchases before they feel loyal to a brand, according to Exploding Topics research from 2024. One sale gets you a customer on trial. The third sale gets you a fan. Everything below is designed to move people past that third purchase.

Customer experience is a marketing function

The first lever on lifetime value has nothing to do with ads. Customer service, dispatch speed and your returns policy do more for repeat purchase than any campaign, yet most founders file them under operations and forget them.

Streetwear brand Geedup Co treats customer service as its primary marketing channel. The team answers every one of hundreds of daily Instagram messages, often with voice notes and video replies. They know their raving fans by name and will reserve stock for loyal customers. Most brands answer messages quickly and stop there. Almost nobody treats the inbox as marketing, which is exactly why it works.

Dispatch speed compounds into preference. I buy from Showpo whenever I need a last-minute outfit, purely because their same-day delivery has never let me down, even when they do not have the exact dress I had in mind. Reliability rewired my buying habit. On the flip side, when Hero Packaging's 3PL slipped from next-day dispatch to four or five days during a sales spike, customers were furious and there was nothing we could do in the moment. If you use a 3PL, negotiate same-day dispatch with a defined cutoff and interrogate how they handle peak season. If you self-ship, never batch orders into one packing day a week. Slow delivery is the most common thread in one and two star reviews.

Returns are a trust engine, and the data is blunt. Around 30 per cent of online clothing purchases are returned according to Forrester, rising to as much as 50 per cent after the holidays per KPMG. Narvar found 49 per cent of consumers check the returns policy before buying. And Pro Carrier research shows 92 per cent of consumers will come back to a retailer with a great refund and returns policy. Offer all three options: refund, store credit and exchange. Copying the no-refund policies of big brands sacrifices retention a small brand cannot afford to lose.

Email flows that bring customers back

My whole retention philosophy started on eBay, where sellers could not email customers. I read competitors' reviews, saw complaint after complaint about unreachable brands, and started manually messaging every buyer the day after purchase with a warm founder note. Repeat buyers got a warmer message and an offer of gift wrapping. About 95 per cent of people replied, repeat purchase took off, and eBay's Small Business Team featured us on their homepage. Modern email platforms automate that exact playbook.

• Thank-you flow, one day after purchase: a plain-text founder note with a little story and mission. The call to action is 'reply with any questions', because the goal is a real conversation, and repeat buyers get their own version acknowledging they came back.
• Instructions email, five days after fulfilment: assembly, care or how-to-use guidance. It cuts support tickets and stops poor product adoption before it becomes a refund.
• Review request, 14 days after purchase: the product has arrived and been used, so ask for honest feedback. Keep the body near-transactional and put the personality in the subject line. I run these through Judge.me.
• Replenishment flow for consumables: mine your order data for the average gap between purchases and land the email just before run-out. Roughly 60 days for skincare, about 30 for seasoning.
• Back-in-stock flow: alert subscribers the moment inventory lands, with a single button to the product page.

On top of the automated flows, send weekly campaigns to past customers. They are already your easiest converts. Data-driven cross-sells work brilliantly: filter everyone who bought product A but not product B and show them product B. So do product-hack emails. My Christmas email showing customers how to wrap gifts in Hero mailers went viral, with customers sending photos back.

Retarget the customers you already paid for

In every client ad account I analyse, the campaign retargeting past customers has the highest return on ad spend. Every single one. The recipe is simple. Build a custom audience of website purchasers from the last 180 days and exclude anyone who purchased in the last 30, because recent buyers do not need the nudge. Objective set to sales, manual campaign, around $10 a day, since the audience pool is small.

The creative that works best here is the dynamic collections ad: one hero image or video with four to six products underneath that Meta personalises for each viewer based on what they browsed and bought. Copy can lean on the relationship. 'Running out of your favourite?' 'You may not have seen our last drop.' 'We miss you!' Let it run at least 30 days before you touch it.

Loyalty programs, VIPs and the magic bucket

The final stage of my funnel is what I call the magic bucket: repeat customers turned into advocates who choose you over every competitor. Loyalty programs are the machinery. Statista found in 2023 that 79 per cent of consumers say loyalty programs affect whether they keep buying from a brand, and 80 per cent say they buy more often after joining one.

There are three types. Points programs reward purchases plus actions like reviews, referrals, social tags and birthdays; an app like Smile.io runs the mechanics automatically once you set the earn rate. Tiered programs give customers a goal to climb toward. Mecca's Beauty Loop is the benchmark, and I am living proof it works, because I buy my core makeup exclusively from Mecca and texted a friend the day I hit level 3. Paid programs charge a fee for permanent perks: Adairs' Linen Lovers costs $19.95 for two years of member pricing and drove 83 per cent of Adairs' sales in 2023. McKinsey found paid members are 59 per cent more likely to choose that brand over competitors.

Then treat your best customers like VIPs. My default definition is anyone with five or more purchases. Build the segment in your email platform, tell them they are VIPs, and give them first access to sales and launches, exclusive content and better gifts. Run every launch in two waves, VIPs first. And make sure everyone else knows the VIP tier exists, because aspiration is the point.

“In November 2023 I pulled a Shopify report of every customer with 20 or more orders and sent them a short personal email: genuine thanks, my actual work email, and a secret 25 per cent early-access code with a note asking them not to share it. It hit an 88 per cent open rate, a 40 per cent click rate, and gave us one of our biggest sales days in five years.”

How to grow customer lifetime value this month

• Calculate your baseline: average order value x orders per customer per year x years retained.
• Switch on a thank-you flow that triggers one day after purchase and asks for a reply, then answer every reply yourself.
• Build the 180/30 retargeting campaign at $10 a day and leave it alone for 30 days.
• Pick one customer touchpoint per week (email, live chat, Instagram DMs, ad comments) and materially improve it.
• Define your VIP segment, email them their new status, and plan your next launch in two waves.
• Send one appreciation campaign to your most loyal customers with a genuine thank you and something exclusive.

The last third of my book, How to Sell Anything Online, is entirely about this stage of the business: retention, loyalty and the magic bucket. If this was useful, the book goes several layers further, with the exact flows, campaign settings and email plays I use at Hero Packaging.