This comparison is decided by a single question, and it is not a question about websites: how central is selling to what you do? Everything else follows from the answer.
Where they actually differ
Squarespace is a website that can also sell. The store is one capability among several, sitting alongside pages, a blog, scheduling and a design system that makes all of it look considered. For a business with a handful of products — a potter, a bakery with a few boxed goods, a consultant selling one course — that is the right amount of commerce, and the site stays the point.
Shopify is a selling system that also renders a website. Inventory, tax rules, shipping bands, discounts, variants and the till in a physical shop are one connected system, and the parts of selling that quietly break elsewhere are handled properly. The dashboard, the billing and the vocabulary all assume a catalogue is why you are there.
The cost structures differ in a way that matters more than the plan price. Squarespace charges its monthly fee and takes payment processing. Shopify's advertised starting rate is promotional and steps up sharply after the first months, and using a payment provider other than its own adds a percentage to every order on top of card processing.
The mistake people make
Choosing Shopify for a business that sells four things, and then paying for a system whose whole design assumes four hundred. The dashboard is heavier, the cost is higher, and none of the machinery that justifies it is being used.
The reverse mistake is slower and worse: choosing Squarespace for a business that grows into real inventory, and discovering that stock rules, shipping logic and channel selling are approximated rather than solved.
Which should you choose?
Choose Squarespace if selling is a part of the business rather than the business — under roughly twenty products, no complex shipping, no physical till to reconcile — and the site's appearance matters as much as its checkout.
Choose Shopify the moment inventory becomes something you manage rather than something you list. If you are reconciling stock, shipping to bands, handling returns, or selling in person as well as online, everything else in this directory is an approximation and this one is not.

Squarespace
The builder to pick when the site has to look good with no designer involved.

Shopify
The default platform for selling, priced accordingly from the first month.
Specs
Ratings
Ease for a beginner
Design and templates
Room to grow
Help when you are stuck
Value for money
Features
Pricing
Squarespace
Shopify
Related comparisons
More head-to-head matchups
Explore other comparisons involving Squarespace or Shopify.
