Building a Website That Works for Customers in Spain and Gibraltar

If your customers sit on both sides of the Spain-Gibraltar border, a website built the normal way will quietly get three things wrong: how you take payment, how you ask for cookie consent, and what your footer is legally required to say. None of these are edge cases you patch after launch. They're decisions that belong in discovery, before a single page is designed, because retrofitting them into an already-built site is slower and more expensive than deciding them upfront.

Why a template build breaks at this particular border

Spain and Gibraltar are a few kilometres apart but sit in different currency zones, different tax regimes, and (as of the current UK-EU arrangement) slightly different data protection frameworks. A generic web design brief treats the site as one audience with one language toggle and one payment button. A business actually trading across this border has two audiences with different expectations for currency, different legal disclosures required by law, and, in some cases, different consent requirements for the same tracking script. None of that shows up in a typical website questionnaire, which is exactly why it gets missed.

Payment gateways: clearing EUR and GBP without losing margin to fees

The practical problem isn't whether a gateway supports both currencies, most modern processors do, it's whether your setup avoids a hidden currency conversion on every cross-border transaction. If your store is priced and settled only in EUR, a Gibraltar customer paying with a GBP-denominated card gets hit with their card issuer's dynamic currency conversion, typically a markup layered on top of the exchange rate, and you get support tickets about "why did I get charged more than the listed price." The fix isn't a plugin, it's choosing a gateway and merchant account setup that can present and settle in the customer's own currency, so Gibraltar customers see and pay in GBP and Spanish customers see and pay in EUR, without either side absorbing an invisible conversion. Stripe and Adyen both support this kind of multi-currency presentment; PayPal can too, though its conversion margins vary by account type and are worth checking directly. This is exactly the kind of integration work that goes beyond a template checkout, it usually needs custom logic tying currency detection, pricing, and settlement together, which is where our Custom Software service work often sits underneath what looks like a simple storefront.

Cookie consent: one banner, two different legal bars

Spain's cookie rules, enforced under its ePrivacy implementation, are stricter than a default consent plugin usually assumes: consent must be an explicit, informed opt-in, the option to reject has to be as visible as the option to accept, and continued browsing or scrolling does not count as consent. A lot of off-the-shelf cookie banners default to a soft "OK, got it" close button with no equally weighted reject option, which is a common way sites end up non-compliant in Spain without anyone noticing until an audit. Gibraltar runs its own domestic data protection law, regulated by the Gibraltar Regulatory Authority, which has broadly mirrored EU-style GDPR concepts under different domestic terminology, and that alignment is set to move even closer to the EU GDPR from mid-2026 onward under the current UK-EU agreement on Gibraltar. In practice, the safest approach for a site serving both audiences is to build the banner to the stricter Spanish standard and apply it everywhere, rather than run two separate consent configurations that need to be kept in sync as the legal landscape shifts. The Gibraltar Regulatory Authority's data protection page and the Spanish data protection agency (AEPD) are the two sources worth checking directly if your legal team wants primary references rather than a summary.

Legal footer and notice requirements aren't interchangeable either

A Spanish-facing site's legal notice (aviso legal) needs specific disclosures, your CIF or tax ID, registered business address, and details tied to Spain's information society services law, alongside a separate cookie policy and privacy policy. A Gibraltar-facing site doesn't carry a VAT number, because Gibraltar doesn't apply VAT or a general sales tax, but it does need accurate company registration details under Gibraltar's Companies Act and a registered office address. Where this gets genuinely tricky is when a Gibraltar-registered business sells to Spanish or EU customers, because distance-selling and digital-services VAT rules can still apply to those sales even though the seller itself charges no VAT domestically. This is a moving area, and Gibraltar's own indirect tax framework has been subject to recent change, so it's worth confirming current obligations with a tax advisor rather than treating either regime as fixed once you've launched.

Currency and language need to be decided at the information-architecture stage

The mistake we see most often isn't a missing feature, it's sequencing: currency and language get treated as a display setting to bolt on near launch, when they're actually structural decisions that shape URLs, checkout flow, and even how search engines index the site. Deciding upfront whether Spanish and English content live on separate subfolders (like /es/ and /en/) or separate domains changes your SEO setup permanently. Deciding upfront whether currency is set automatically by geolocation or by a visible manual toggle changes how your checkout logic and price caching work. Bolt these on after a site is built and you're usually rebuilding the pricing and routing logic, not adjusting a setting, which is slower and costlier than getting it right in the discovery phase of a web design build.

What this looks like in practice

For a business already running back-office systems across this same border, invoicing in two currencies and reconciling two tax treatments, this website problem is the customer-facing half of a constraint we've written about before in our piece on cross-border software for Spain and Gibraltar. The two problems share a root cause: templates and generic plugins are built for one jurisdiction, and this border sits between two. Catching the payment routing, consent configuration, and legal notice requirements during discovery, rather than treating them as launch-day checkboxes, is what keeps the eventual build from needing a second pass six months in.

If you're scoping a build like this, our Website Cost Calculator gives a realistic range based on languages, integrations, and page count, and our breakdown of what actually drives website cost explains the pricing logic behind those ranges in more detail.