E-Commerce Website Costs 2026: Full Breakdown

E-commerce website costs are the first thing most aspiring online sellers research, and the range they find is bewildering. In 2026, building an online store in the UK can cost anywhere from £0 to well over £50,000. The spread is wide because different business models, technical requirements, and growth ambitions demand different budgets. A sole trader selling handmade candles and a fashion brand processing 2,000 orders a day have very different needs.

This guide breaks down every cost component involved in building and running an e-commerce website: platform subscriptions, design, development, payment processing, hosting, SSL, maintenance, and the hidden costs that catch people out. The goal is to help you budget accurately regardless of your starting point.

E-Commerce Website Cost Components

Looking only at the monthly platform fee when calculating e-commerce costs is misleading. True cost includes several items, some recurring annually and some one-off investments. Understanding each component is the first step to planning your budget properly.

Platform or Infrastructure Fee

SaaS platforms charge monthly subscriptions. Open-source solutions like WooCommerce have hosting and server costs instead. UK SaaS platform subscriptions range from £25 to £300 per month. WooCommerce hosting costs £5 to £60 per month, plus £10 to £20 per year for a domain name.

Design and Development

There is a significant gap between using a ready-made theme and commissioning custom design. On SaaS platforms, free themes are available but limited. Premium themes cost £100 to £350. Custom design work from a professional web design agency ranges from £3,000 to £15,000. Fully bespoke development starts at £15,000 and can exceed £50,000 for complex builds with custom integrations.

SSL Certificate

Essential for secure online transactions. SaaS platforms include SSL in their subscriptions. WooCommerce and custom builds may require separate SSL, though Let’s Encrypt provides free certificates that most hosting providers support. Premium SSL (Extended Validation) costs £50 to £250 per year but is rarely necessary for small to mid-sized stores.

Payment Processing

Stripe, PayPal, and Worldpay charge per-transaction fees rather than setup costs. Stripe takes 1.5% + 20p per UK card transaction. PayPal charges 2.9% + 30p for standard processing. These fees are unavoidable and apply to every sale. On high-volume stores, even a 0.5% difference in processing rates translates to thousands of pounds annually.

Shipping Integration

SaaS platforms offer built-in integrations with Royal Mail, DPD, Evri, and other UK carriers at no extra cost. WooCommerce shipping plugins range from free to £150 per year, and custom API integrations can cost £500 to £2,000 as a one-off development expense.

Accounting and Invoicing Integration

Connecting your store to Xero, QuickBooks, or FreeAgent automates invoicing and VAT returns. Plugin costs range from free to £200 per year. Some SaaS platforms include basic accounting integrations in their plans, while others require third-party apps.

SaaS Platform Pricing

SaaS (Software as a Service) platforms are the most popular choice for UK e-commerce businesses because they bundle hosting, security, and core features into a single subscription. Here are the 2026 prices for the three leading platforms.

Shopify

Shopify is the global market leader. Basic plan costs £25/month ($39/month USD), the Shopify plan is £65/month ($105/month), and Advanced is £259/month ($399/month). On top of subscription fees, Shopify charges a 2% transaction fee when you do not use Shopify Payments. In the UK, Shopify Payments is available, bringing card processing to 1.5% + 25p on the Advanced plan. Free themes are available but limited in design flexibility. Premium themes cost $150 to $400. The Shopify App Store offers thousands of plugins, many charging monthly fees of £5 to £100 each.

BigCommerce

BigCommerce positions itself as a feature-rich alternative to Shopify. Standard plan is $29/month, Plus is $79/month, and Pro is $299/month. A key differentiator: BigCommerce charges zero transaction fees on all plans. Built-in features include multi-currency, faceted search, and product reviews without needing paid plugins. This can make BigCommerce cheaper overall despite similar headline prices. BigCommerce is particularly strong for B2B e-commerce and stores with complex product catalogues.

Squarespace

Best suited for smaller catalogues where design matters most. The Business plan at £23/month includes basic e-commerce, while the Commerce plans at £27 and £40/month remove transaction fees and add features like abandoned cart recovery. Squarespace templates are visually polished but offer less flexibility for large-scale stores. It is a solid choice for creative businesses, boutique shops, and service-based businesses selling a limited product range.

These figures cover platform subscription only. Payment processing fees, shipping carrier charges, photography, and digital marketing budget sit on top.

WooCommerce Cost Analysis

WooCommerce itself is free and open-source, but the total cost of running a WooCommerce store involves several components. Understanding these individually prevents the common surprise of “I thought WooCommerce was free.”

Hosting

Shared hosting starts at £3 to £10 per month but struggles under load. Managed WordPress hosting from providers like Starter, Starter, Starter, or SiteGround costs £15 to £60 per month and is recommended for any store expecting consistent traffic. VPS or dedicated hosting for high-traffic stores runs £50 to £200 per month.

Theme

Free WooCommerce themes exist but tend to be basic. Premium themes from ThemeForest or developer studios cost £40 to £200 as a one-off purchase. Choose themes specifically built for WooCommerce with regular updates and good support.

Plugins

This is where WooCommerce costs can escalate. Essential plugins include: payment gateway (usually free), SEO , security (Wordfence, free tier available), backup (UpdraftPlus, free tier), and shipping calculator (free to £100/year). Additional functionality like subscriptions, bookings, or multi-vendor marketplace support can add £100 to £300 per year each. A typical mid-range WooCommerce store runs 15 to 25 plugins.

Developer Support

Unless you are technically confident, you will need occasional developer help. UK-based WooCommerce developers charge £50 to £120 per hour. Retainer arrangements for ongoing support typically cost £200 to £500 per month. Offshore developers can be cheaper but communication and timezone differences add friction.

First-Year Total

A realistic first-year cost for a WooCommerce store: hosting £180-720, domain £10-20, theme £40-200, essential plugins £0-400, developer setup £500-3,000, SSL (if not included in hosting) £0-50. Total: £730 to £4,390 for a basic to mid-range setup. Professional custom design pushes this to £5,000-15,000+.

Custom Development Costs

For businesses with complex requirements that SaaS platforms and WooCommerce cannot accommodate, custom development is the remaining option. This includes headless commerce architectures, purpose-built integrations with ERP or warehouse management systems, and highly customised user experiences.

Custom e-commerce development in the UK typically costs between £15,000 and £80,000 depending on scope. A headless build using Shopify Plus or BigCommerce as the backend with a custom Next.js or Gatsby frontend sits at the lower end (£15,000-30,000). Fully custom solutions built on frameworks like Laravel or Django start at £30,000 and can exceed £100,000 for enterprise-grade platforms.

Ongoing maintenance for custom builds is a significant cost. Bug fixes, security patches, feature additions, and hosting management run £500 to £2,000 per month. Without a dedicated development budget, custom builds deteriorate quickly.

The question to ask before going custom: does my business genuinely need something that Shopify, BigCommerce, or WooCommerce cannot deliver? In the vast majority of cases, the answer is no. Custom development is justified when you need deep integration with existing business systems, handle extremely high transaction volumes, or require functionality that simply does not exist in any available plugin or app.

Hidden Costs to Watch

Several cost categories regularly catch new e-commerce businesses off guard. Being aware of them prevents budget overruns.

Payment processing fees accumulate: A 1.5% + 20p transaction fee sounds small, but on £100,000 annual revenue, that is £1,700. On £500,000, it becomes £7,700. These fees are non-negotiable with most providers, though Stripe and PayPal do offer volume discounts at scale.

App and plugin costs compound: Shopify stores frequently run 10 to 20 apps. If the average app costs £15 per month, that is £150 to £300 in monthly app charges on top of the platform subscription. WooCommerce plugin renewals (many charge annually) create a similar dynamic. Audit your plugins regularly and remove anything you are not actively using.

Photography and content: Professional product photography costs £10 to £50 per product depending on complexity. A catalogue of 200 products means £2,000 to £10,000 in photography alone. Some businesses handle this in-house with a lightbox and smartphone, which works for many product types but not all. Written product descriptions, if you are not writing them yourself, cost £5 to £30 per product through freelance copywriters.

Marketing is not optional: An e-commerce site without marketing budget is a shop with no sign on the door. Plan to spend at least 20-30% of projected revenue on marketing in year one. Google Ads, social media advertising, SEO content, and email marketing all require budget.

Returns and chargebacks: Returns cost money in carrier charges, restocking time, and potential product damage. UK law requires a 14-day return window for online purchases. Budget for a return rate of 5-15% depending on your category. Fashion typically sees the highest return rates (20-30%).

Compliance costs: GDPR compliance, cookie consent management, accessibility standards, and tax filings all carry costs. Cookie consent platforms cost £0 to £40 per month. Tax software or accountant fees for VAT returns add £500 to £2,000 per year.

Annual Total Cost Comparison

To make a fair comparison, you need to look at total annual cost including all the components discussed above. Here is a realistic side-by-side comparison for a small to medium e-commerce business selling 100 to 500 products.

Payment processing fees (Stripe/PayPal) apply equally to all three platforms and are not included in the table above. On £50,000 annual revenue, expect approximately £950 in Stripe fees (1.5% + 20p per transaction assuming average order value of £40).

Choosing the Right Option for Your Budget

Your budget should guide your platform choice, but avoid optimising purely for the lowest cost. The cheapest option is not always the most cost-effective in the long run.

Under £1,000 per year: WooCommerce on shared hosting with a free theme and free plugins. Suitable for testing a business idea or selling a small number of products. You will need basic WordPress skills or be willing to learn. Not recommended for stores expecting significant traffic.

£1,000 to £3,000 per year: Shopify Basic or BigCommerce Standard with a premium theme. Reliable, scalable, and requiring minimal technical knowledge. Good for most small businesses launching their first online store. BigCommerce offers better value at this tier due to zero transaction fees and more built-in features.

£3,000 to £10,000 per year: WooCommerce on managed hosting with professional design, or Shopify with the Shopify plan and key premium apps. Suitable for established businesses with 500+ products, significant traffic, and the need for customisation.

£10,000+ per year: Shopify Plus (from $2,300/month), BigCommerce Enterprise, or custom WooCommerce builds with dedicated development support. For businesses processing high volumes and requiring deep integrations with existing systems.

A practical approach for most businesses: start with a SaaS platform on a mid-tier plan, validate your business model, then evaluate whether migrating to a more customisable (and potentially cheaper at scale) solution makes sense. Migration costs between platforms typically run £1,000 to £5,000 depending on catalogue size and complexity.

Ongoing Monthly Costs After Launch

Launching the store is just the beginning. Running an e-commerce business involves recurring monthly costs that should be factored into your financial planning from the start.

Platform subscription: £25 to £300/month depending on plan and provider.

Payment processing: 1.5% to 2.9% + fixed fee per transaction. Scales with revenue.

Shipping costs: Varies by carrier and volume. Budget £2 to £8 per domestic parcel. Negotiate rates once you reach 100+ parcels per month.

Marketing spend: Plan for £500 to £3,000 per month depending on your growth targets. This includes Google Ads, social media advertising, and email marketing tools.

Software subscriptions: Email marketing , accounting (Xero from £16/month), customer service (Zendesk from £15/month), analytics (GA4 free). These add up.

Insurance: Product liability and public liability insurance, roughly £10 to £40/month for small e-commerce businesses.

Content and photography: Ongoing as you add new products or refresh existing listings. Budget £100 to £500/month depending on the pace of new product launches.

A small e-commerce business should expect total ongoing monthly costs (excluding stock purchases) of £800 to £3,000. This number rises with revenue, but so should your margins if the business is structured properly.

Frequently Asked Questions

Author: Serdar D. | Bravery Technology