Shopify Checkout Customization Experts

Checkout code is small and its mistakes are expensive. A block that breaks the payment step costs sales every hour it stays live, so vet for recent checkout work, not general Shopify skill.

Put your plan in the first line of the brief. It decides what can be built before anyone talks about design. A developer who quotes an in-checkout upsell to a non-Plus store without raising the plan hasn't done checkout work lately.

Ask what they would configure before what they would build. Field settings, branding and the one-page layout live in the admin. Hiding a delivery option on a non-Plus store is usually a public app built on Functions. A good specialist tells you which parts need no code and quotes custom work only for what's left.

Ask for extension work, not old checkout screenshots. For years, checkout customisation meant editing checkout.liquid, and that skill no longer transfers. In September 2026, 513 profiles on shopexperts listed checkout work and few had claimed them, so ask each for shipped checkout extensions or Functions, not a badge, plus the plan each store was on.

Check partner tiers in Shopify's own directory. There are five tiers: Registered, Select, Plus, Premier and Platinum, and Platinum is the top one. Building Functions isn't a Plus Partner credential either, so a tier alone doesn't prove checkout skill.

Red flags. Offers to restyle any checkout element with custom CSS. Quotes that never mention your plan. No testing across mobile, accelerated checkouts and each market you sell in. No answer on who updates the extension after Shopify changes the checkout.

Settle the plan question before you collect quotes. It changes the scope more than any design decision will.

Every plan. The checkout editor sets your logo, colours, fonts and the one-page or three-page layout. Checkout settings make fields such as company name, address line 2 and phone number hidden, optional or required. The Thank you and Order status pages accept extensions, so surveys, reorder prompts and post-purchase offers can live there.

Public apps that contain Functions also work on any plan. That's the usual route for a non-Plus store that needs to hide, rename or reorder delivery and payment options.

Plus only. UI extensions inside the information, shipping and payment steps, whether they come from a public app or a custom build: a gift message field, a delivery date picker, an upsell beside the order summary, a returns note by the pay button. Also custom apps with Functions, which is how Plus stores get discount, delivery or payment logic no public app sells.

Why checkout.liquid edits are gone. Plus stores used to edit the checkout template directly. Those edits broke when Shopify changed the checkout and held stores back from newer checkout features. Extensions replaced them with fixed, upgrade-safe slots, Functions took over the logic, and custom pixels in Customer events took over tracking.

The deadline has passed on every plan. Plus stores had to move their Thank you and Order status pages off checkout.liquid and Additional Scripts by August 2025, and non-Plus stores lost Additional Scripts and script tags on those pages in August 2026. If a pixel, message or upsell quietly disappeared from your order confirmation, that's the likely reason — it needs rebuilding, not restoring.

The price of a Shopify custom checkout depends on where the change lives and how many markets it has to work in. Typical ranges:

Most engagements combine two or three of these.