How to Reduce Your Ecommerce Customer Acquisition Cost

Customer Acquisition Costs (CAC) are constantly rising, which has made it difficult for many businesses across a wide range of industries to boost revenue and make a profit. Most businesses are facing expensive costs to acquire each customer, a lot more competition and rising ad costs, making it seem impossible to be more visible online and achieve measurable growth. To be able to make a profit, you need to reduce your eCommerce CAC through optimising every touchpoint in your acquisition strategy to help convert potential customers into actual customers, without spending too much!

What is Customer Acquisition Cost?

Customer Acquisition Cost (CAC) is the total expense that’s needed to convert a potential customer into someone who pays for a product or service. It’s the metric for the cost of all marketing and sales divided by the number of new customers acquired during a particular time period. This means that you need to include your advertising spend, content creation cost, sales team salaries and technology costs into it before dividing this by the new customers you’ve acquired.

CAC directly affects your bottom line, so it’s very different from vanity metrics that make your marketing look successful on the surface. The metric truly reflects how your marketing is doing because it calculates the profit you’ve made across all channels. If this number is too high compared to what customers spend with your business, then you’re running a marketing strategy that’s losing money, no matter how many sales you get. You need to lower the customer acquisition cost for your eCommerce brand to earn a profit and have a successful marketing strategy.

How do you accurately calculate CAC?

To accurately calculate your CAC, you need to make sure that you include every cost that’s related to your acquisition work. The formula you use for this is:

CAC = (Total marketing costs + total sales costs + technology costs + overhead) ÷ Number of new customers you’ve acquired.

Your marketing costs include things like content production, social media management, SEO investments, marketing team salaries and advertising spend. The sales costs include sales team compensation, commissions, training and travel expenses, and your technology costs are for your CRM, marketing automation platform, communication systems and analytic tools. As for the overheads, this includes rent, utilities and administrative expenses that you’ve allocated to acquisition work.

What cost do you need to achieve?

When trying to cut eCommerce marketing spend waste, many businesses wonder what counts as a good CAC to help them work toward a goal. However, there isn’t a set cost for every business because it depends on your industry, business model and customer lifetime value. Even though there isn’t a set cost to achieve, there are benchmarks that you can use to guide you toward a good CAC when reducing this metric.

The key to eCommerce cost efficiency in 2026 is to have at least a 3:1 ratio of CAC to customer lifetime value (LTV), which means that customers should create three times more revenue than the cost to acquire them. As well as this, your payback period, which is the time needed to gain the acquisition costs back through customer revenue, should be under 12 months. If yours is longer, you can find that your cash flow is struggling and becomes strained, so growth is harder.

We can benchmark your acquisition cost for each channel and find the highest-impact optimisations for free.

How to lower CAC for a Shopify store in the UK?

It’s difficult to understand how to lower CAC for a Shopify store in the UK and be successful at doing it to earn a bigger profit. You can implement our strategies to help reduce acquisition cost while improving or maintaining your conversion quality.

Segment your audience

One of the ways to reduce eCommerce acquisition costs in 2026 is to segment your audience. Your customer base is made up of different types of people who are all looking for something specific yet different from each other. This means that general marketing messages for your audience are unlikely to give you conversions and will just waste your budget. You need to segment your audience by demographics, location, spending habits and basic behaviours to create personalised messaging for each group that speaks to them more than generic content ever will. Having a personal touch in your messaging for your audience and speaking to their interests or habits will encourage them to purchase from you, converting them into customers and revenue.

You can use advanced segmentation to target potential customers with the highest purchase intent and to find the right people for your offerings. There’s also predictive segmentation that uses AI to help you find patterns in your existing customer base, so that you can find similar new customers. On top of this, behavioural segmentation can be used to track certain actions, such as page visits, content downloads and email engagement. However, the best way to reduce your eCommerce CAC is through location targeting, where you target specific local terms where existing customers are and where your audience is.

Improve your conversion funnel

Another way to lower customer acquisition cost in eCommerce is to improve your conversion funnel. Typically, many brands lose customers at specific points in the customer journey. You need to identify these and fix them to improve conversion rates without increasing your traffic costs. A great place to start is by mapping out your customer journey from the awareness stage all the way to purchasing. Use analytics tools to track how many potential customers there are between each stage and find where most of your losses are. Usually, people drop off during the transition from clicking on an ad to the landing page, the journey from browsing to the cart and during the checkout process.

To improve this customer journey, you need to optimise each stage. This means that you should optimise your messaging to make it match between your ads and landing pages, make navigation easier to prevent confusion, add trust signals like reviews and remove any unnecessary widgets and fields that create friction.

Optimise your paid ads

Paid ads are the biggest acquisition cost that can easily create profit issues for your business. However, it’s possible to reduce this eCommerce CAC through this channel by making small improvements in ad performance. Using CAC tracking for each channel will show you which platforms deliver the best ROI for your brand. You should track the costs separately for Facebook, Instagram, LinkedIn, Google Ads and any other channels you use to find the best platforms. As well as this, you can carry out ad creative and copy testing to see what works best with your audience. Test images, calls-to-action, headlines and values together and see what gets the highest click-through and conversion rates.

Other ways to reduce eCommerce acquisition costs in 2026 for paid ads include optimising your bid strategy to achieve the balance between visibility and cost, placement and targeting changes to make sure your ads appear where your customers are, and negative audience segmentation to prevent your ads from showing to the wrong people.

Boost your website experience

Your website is where most decisions about converting happen. This means that you need to make sure that it’s working flawlessly through optimising the experience people have. Doing this helps to improve conversion rates across all traffic sources and to lower customer acquisition costs for your eCommerce brand. You need to implement Conversion Rate Optimisation (CRO), which includes creating clear value propositions, compelling headlines, prominent calls-to-action and copy that highlights benefits. Everything you do with this should focus on encouraging visitors to convert without confusing them or creating friction.

You should also optimise landing pages by making sure that the messaging matches your ads and includes focused objectives. As well as this, you need to make navigation easy to stop distractions and only have forms that request essential information. Mobile optimisation is also critical as most consumers shop and browse via their phones, rather than on a desktop. You need fast load times to prevent them from bouncing and going somewhere else, simplified forms and layouts that work on smaller screens.

Create useful content

By creating useful content to cut eCommerce marketing spend waste, you can gain qualified leads at a fraction of the cost compared to paid ads. Publishing regular, high-quality content that answers potential customers' questions makes them more likely to convert. Make sure that your content is valuable and SEO-optimised to interest your audience and give them the answers that they’re searching for. Each topic needs to be something that your audience is actively looking for and should be optimised for search engines to help you rank, allowing you to be more visible to potential customers and encouraging them to interact with your brand and make a purchase.

Having content that attracts your audience signals to search engines that you have expertise, authoritativeness and trustworthiness (E-A-T). This is something that Google looks for to determine the quality and credibility of your content, which helps it to rank you higher and, therefore, give you more traffic that can convert.

Implement SEO

SEO is vital to include on your website because it helps to bring you consistent and qualified traffic without having to pay ongoing advertising costs. Even though SEO is an initial investment that takes time to work, the long-term ROI you can gain exceeds what paid channels can give you. This is because when you constantly optimise for SEO over time, it carries on bringing you traffic once you start ranking. You can gain traffic for months or years if you gain and maintain a good ranking, without any additional spending needed.

Use the keywords and terms that your audience is actually searching for. It’s best to focus on buying-intent keywords that show a readiness to purchase, rather than just informational questions. These will help you be more visible for the specific terms your audience is looking for, allowing you to compete against others in search. You should also make use of local SEO to come up in the Google map pack results, which is how many customers find businesses and purchase from them. This requires you to fully fill out your Google Business Profile, claim it, keep it up-to-date and gain real recent reviews from your customers to build trust and authority. Doing this helps your brand get into the local map pack, which can generate a lot more traffic and conversions!

Looking to boost your eCommerce cost efficiency for 2026?

Our team audits your channels, conversion rates and retention programme to tell you where you can gain quick wins. Get your free audit with no obligation today.

Frequently asked questions