How to Choose a Shopify Agency in 2026: A Buyer's Checklist for Merchants in the UK, US, Europe, Australia and New Zealand

Most agency websites look alike: logos, a portfolio grid, a few quotes. Choosing well means checking evidence you can verify yourself, then comparing every agency on the same scorecard. This checklist works for any Shopify agency, onshore or offshore, including us. If you're hiring one developer rather than an agency, use our developer vetting checklist instead.

1. Write a one-page brief before you shortlist

Shopify's own advice to merchants hiring a Partner is to define your budget, timeline and expected outcomes in detail before you get in touch. A one-page brief also makes proposals comparable later. Include:

• your store URL and Shopify plan
• the goal in one sentence, and how you'll measure it
• must-haves, nice-to-haves and what's out of scope
• apps and systems the work touches (ERP, reviews, subscriptions, tracking)
• your deadline and why it's fixed, if it is
• a budget range, and who on your side makes decisions

Send the same brief to every agency.

2. Build a shortlist from sources you can check

The Shopify Partner Directory

The Shopify Partner Directory lets you filter Partners by services, price range, location, industry, languages spoken, tier, and whether they're accepting new clients. What the signals actually mean:

• Tiers measure commercial volume, not code quality. Shopify's Partner Program has five tiers: Registered, Select, Plus, Premier and Platinum. According to Shopify's Q3 2026 tiering guide, a tier is based on revenue from merchants the Partner brought to Shopify or supports, plus the number of new merchants, and it updates every quarter. A high tier tells you the agency has scale. It doesn't tell you it fits a project your size.
• Not being listed isn't a red flag. Shopify invites Partners at Plus tier and above to the directory, so many capable smaller agencies aren't in it.
• Directory reviews are tied to real access. A merchant can only review a Partner that has been a collaborator on their store for at least a week. Reviews rate quality of work and communication.

The Partner bills you directly. The contract is between you and the agency, not Shopify.

Clutch and Upwork

• Clutch checks a reviewer's identity and work history before publishing, and labels a review "Not Verified" when it can't confirm the details. Clutch doesn't disclose its methods. Give more weight to verified reviews that name the reviewer's role and describe a project like yours.
• Upwork's Job Success Score is roughly successful minus negative contract outcomes, divided by total outcomes. It's calculated over 6, 12 and 24 months, and the best of the three is shown. So read the work history itself: project types, dates and written feedback tell you more than the percentage.

For any review site, look for recent reviews, projects similar to yours, and how the agency handled the one that went wrong.

Shopify Verified Skills

Individual developers can earn Verified Skills badges by passing paid assessments on Shopify Academy, for example in custom app development or headless commerce. Badges are issued through Credly and are valid for two years. Ask for the Credly links of the people who'll work on your project. That verifies people, not just the company name.

3. Inspect their live work yourself

Ask each agency for three live stores and exactly what they built on each: the whole theme, a few sections, an app or an integration. Then check.

See which theme a store runs. On many Shopify storefronts that use a theme, the page source includes a Shopify.theme object. Open the store, open your browser's developer console and run:

// Run in the browser console on the store's homepage
Shopify.theme
// On stores we checked, this returns the theme's name, id, schema_name,
// schema_version, theme_store_id and role. schema_name is often the base
// theme, such as "Dawn".

A familiar base theme isn't bad. Customizing a proven theme is often the sensible choice. But you should know whether you're paying for a custom build or a customized theme. If Shopify is undefined, the storefront may be headless or not on Shopify at all, so ask.

See which apps load on the storefront. Search the page source for cdn.shopify.com/extensions/. On the stores we checked, app extension files load from those URLs, and the folder names usually hint at the app. A store with dozens of them may be slow for reasons the agency didn't cause, so ask what they'd remove.

Check claimed apps on the App Store. If the agency says it builds apps, find its developer page on the Shopify App Store (URLs look like apps.shopify.com/partners/<name>). Star ratings are weighted toward recent reviews, and each review shows how long the reviewer has used the app. A Built for Shopify badge means the app met Shopify's performance, design and integration standards, and certification is reviewed every year.

Look at code. Ask for a public repository, or a screen-share walkthrough of a recent pull request with client details hidden. You're looking for readable commits, reviews and tests, not perfection.

4. Ask questions that show how they work

If an agency proposes a paid discovery phase for a large project, that's usually a good sign. It means they want to understand the store before fixing a price.

5. Compare proposals line by line

Put the proposals side by side and compare scope, assumptions and exclusions before you compare totals. Most of the gap between two quotes is explained there. Check that each one names the Shopify plan the work needs, the apps it assumes, how it will be tested, and the milestones payments are tied to. Our guide to what Shopify developers cost in 2026 walks through reading a quote in detail.

6. Check the contract

This isn't legal advice. Have a lawyer in your market review the final contract. At minimum, check for:

• IP assignment: code, designs and apps assigned to you on payment, with the theme in a GitHub organization you control.
• Termination and handover: notice period, handover of code, documentation and access, and what's owed if either side ends it early.
• Warranty and support: a bug-fix period after launch, response times for urgent issues, and how change requests are priced.
• Subcontracting: whether the agency can pass work to freelancers or other firms, and whether you're told.

Data protection (UK and EU merchants)

If the agency can see your customers' personal data, for example orders or customer exports, it is likely acting as a processor for you. The UK ICO says a written contract is needed every time a controller uses a processor, and lists the terms it must include, such as processing only on your documented instructions, a duty of confidence, security measures, rules for sub-processors and what happens to the data when the contract ends. In the EU, the European Commission has published optional standard contractual clauses that meet the same Article 28 requirements.

If the agency is outside the UK, note that the ICO counts making personal data accessible to a separate organization outside the UK as a transfer. Restricted transfers need a mechanism such as adequacy regulations, the International Data Transfer Agreement or the UK Addendum to the EU clauses. The EU has a separate set of standard clauses for transfers outside the EEA. Your data protection adviser can tell you which applies. In the US, ask your counsel which state privacy laws apply to you and what they require of vendors. Limiting access is still the simplest protection: an agency building a theme rarely needs customer data at all.

7. Onshore or offshore: decide on overlap and process

Location changes cost, overlap hours and how much you rely on written communication, not quality by itself. Offshore agencies are a legitimate option: we're an offshore team in Lahore, and we'd still tell you to choose a local agency if you need workshops in person or your team can't write specs. Whichever you pick:

• Get the overlap in writing, in your time zone, and ask how urgent issues are handled outside it.
• Remember daylight saving. The UK and EU, the US, Australia and New Zealand change clocks on different dates, so overlap can shift by an hour for a few weeks each spring and fall.
• Ask for a sample status update. Remote projects run on written tickets and updates.
• Ask about public holidays in the agency's country and how cover works.

Our comparison of agencies, freelancers, offshore teams and in-house developers goes deeper on the trade-offs.

Red flags

• They ask for your owner login or password instead of sending a collaborator request.
• Proof you can't open: logos and screenshots, but no live stores, apps or named reviews.
• A fixed price before anyone has looked at your store or brief.
• The people who sell the project won't say who builds it.
• The store, code or custom app stays in their accounts, with no transfer or handover plan.
• No contract, no IP clause, or full payment up front.
• No processor terms when they'll handle customer data and you're in the UK or EU.
• Yes to everything, with no mention of plan limits, existing apps or trade-offs.

Any single red flag should stop the process, whatever the scorecard says.

A scorecard you can copy

Score each agency from 0 (no evidence) to 5 (strong evidence you checked yourself), multiply by the weight, and add up. The maximum is 100. Price is left out on purpose: score first, then compare prices among the agencies that passed.

Want help with your Shopify project?

Run us through this same checklist. We build themes, custom apps, checkout extensions, integrations and migrations, and we'll show you work you can open: start with our live work and case studies. See our Shopify development services, or if you need ongoing capacity rather than a project, hire dedicated Shopify developers.

Sources

• Shopify Help Center: Hiring and working with Shopify Partners
• Shopify Help Center: Eligibility for the Shopify Partner Directory
• Shopify: Partner Program Q3 2026 Tiering Guide
• Shopify Help Center: Shopify Academy and verified skills
• Shopify Help Center: Choosing apps
• Shopify Help Center: Transferring stores to clients
• Clutch Help Center: How does Clutch verify reviews?
• Upwork Help: How is my Job Success Score calculated?
• ICO: What needs to be included in the contract?
• ICO: When is a contract needed and why is it important?
• ICO: International transfers, a guide
• European Commission: Standard contractual clauses, questions and answers