Building a Multilingual and Multi-Region Website: What US and UK Businesses Need to Plan

A website that sells well in one country rarely works unchanged in the next one. A US company opening in the UK, or a UK company adding the US or a French-speaking market, finds that the job is bigger than translating a few pages. Prices, dates, tax, legal pages and URLs all change with the audience.

The expensive problems come from early decisions: how the URLs are organized, how visitors reach the right version, and who keeps each version up to date. These choices affect both the build and your search engine optimization, and they are hard to reverse once pages are indexed. This guide covers what to plan before development starts, using US and UK English as a running example.

Language and region are different decisions

Google's documentation draws the line clearly: a multilingual site offers content in more than one language, while a multi-regional site explicitly targets users in different countries. A site can be one, the other, or both. The definitions are in Google's guide to managing multi-regional and multilingual sites.

The US and UK share a language, yet a site built for one feels slightly wrong in the other. Spelling differs (color and colour, organization and organisation). The date 03/04/2026 means March 4 to an American and 3 April to a British reader. Prices need USD or GBP, and units of measurement, phone formats, address forms and delivery options differ too.

Tax display is a regional rule that has nothing to do with language. UK guidance for traders says price indications that consumers can see must include VAT and be shown in sterling, as summarized by Business Companion, the Chartered Trading Standards Institute's guidance site. US stores commonly show a pre-tax price and add sales tax at checkout, because the tax depends on where the buyer is. This is a general description and not legal advice. Terms, privacy and returns pages also need review by someone qualified in each market.

Choosing a URL structure for regional sites

Every regional or language version needs its own URL. Google recommends using different URLs for each language version rather than using cookies or browser settings to change the content on a single URL. There are three practical ways to do that, and Google's documentation lists the trade-offs of each.

Country domains

A country-code domain such as example.co.uk or example.de is tied to one country, and Google describes it as a strong signal to both users and search engines. The downsides Google lists are cost, extra infrastructure and the fact that each domain can target only a single country. Google treats some regional-looking domains, including .eu, as generic.

Subdomains

A subdomain such as uk.example.com is easy to set up and can be hosted in a different location from the main site. Google notes that visitors may not recognize the targeting from the URL alone.

Subfolders

A subfolder such as example.com/uk/ keeps everything on one domain and one host, which Google lists as easy to set up and low maintenance. The same guidance says URL parameters such as ?loc=uk are not recommended.

The right choice depends on how independent each market is. Separate teams, catalogs and legal entities point toward country domains. One team serving several markets from a shared catalog usually points toward subfolders.

What hreflang does and where it goes wrong

Hreflang is an annotation that tells Google which language and regional versions of a page exist, so that search results can show a UK searcher the UK page and a US searcher the US page. Google's guide to localized versions of your pages says it is useful even for small regional variations of similar content in one language, which is exactly the US and UK case.

It can be added in the page HTML, in HTTP headers or in the sitemap. Google's main rules are:

• Each version must list itself and every other version, and the links must point both ways. Google says annotations without return links may be ignored or misread.
• The value is a language code with an optional region code, such as en-US or en-GB. A country code cannot be used alone, and the code for the United Kingdom is GB, not UK.
• URLs must be fully qualified, including https.
• The reserved x-default value marks the fallback page for visitors whose language settings match none of your versions.

Why automatic redirection by location is discouraged

It is tempting to detect a visitor's IP address and send them straight to "their" version. Google's wording is direct: avoid automatically redirecting users from one language version of a site to a different language version. It suggests adding links to the other versions so that people can choose.

There are two reasons. First, location is a poor guess at preference: a British traveler in New York ends up on the wrong site with no obvious way back. Second, crawling. Google's page on locale-adaptive pages explains that Googlebot's default IP addresses appear to be based in the USA and that it sends requests without an Accept-Language header, so content that depends on location or browser language may not be crawled, indexed or ranked for every locale.

A better pattern is a visible country or language selector on every page, with an optional banner suggesting another version.

Translation workflow and who maintains it

Translation is an ongoing process, so decide who owns it before launch. Someone has to notice when a source page changes, send the change for translation, review it and publish it. Without that owner, regional versions drift out of date.

Separate the two kinds of text. Interface strings such as buttons, form labels and error messages belong in language files managed with the code. Pages, products and articles belong in the CMS, with a clear status for each version. Machine translation can speed up a first draft, but legal pages, pricing and checkout wording should be reviewed by a fluent person who knows the market.

Currency and payment methods

Decide whether each region has its own fixed price list or whether prices are converted from one base currency. Fixed regional prices stay stable, while converted prices move with exchange rates and produce awkward amounts.

Payment preferences vary by country, so ask your payment provider which methods it supports in each market and what it charges for currency conversion. Shipping, returns and tax calculation also need per-region rules, which adds real effort to an international online store.

Check what your CMS supports

Platforms differ a great deal here. The WordPress documentation states that WordPress does not support a multilingual site out of the box and describes the plugin and multisite approaches that add it. Frameworks such as Laravel include localization features for interface strings, including territory variants such as British English, but content translation still has to be designed into the application.

Before committing, ask whether the platform can give each version its own URL, generate hreflang automatically, hold per-region prices and tax settings, and show editors which translations are out of date.

Common mistakes to avoid

• Launching regional versions that are identical apart from the URL, with no local currency, spelling or contact details.
• Forcing redirects by IP address and hiding the country selector.
• Using hreflang codes that do not exist, or forgetting return links.
• Translating the pages but leaving emails, invoices, error messages and legal pages in the original language.
• Adding a market that nobody on the team can support in its language or time zone.

The last point is also the main reason to wait. If you cannot handle orders, support and legal obligations in a market, a regional site makes promises you cannot keep.

What to do next

List the markets you expect to serve, and for each one write down the language, currency, tax display, legal pages and the person who will maintain the content. Then choose a URL structure that fits all of them, even if you launch with only two. Retrofitting regions into a site that assumed one country is a significant cost driver in a rebuild.

Conclusion

A multilingual and multi-region website is a set of planning decisions more than a translation task. Treat language and region separately, give every version its own URL, use correct hreflang, let visitors choose their version, and assign an owner for each version's content.

Entrant Technologies builds websites and web applications. If you are planning a site for more than one market, you can request a quote and describe the countries and languages you have in mind.