[ Cost guide ] · 6 min read
Shopify vs Custom Ecommerce Build: The Real Cost Crossover Point (2026)
A custom ecommerce build costs $80,000-$500,000 upfront against Shopify Plus's roughly $40,000-$80,000 for a full first year. Shopify costs less on day one in most cases, but past about $5 million in annual GMV, the math turns, and a custom build often ends up 25-35% cheaper by year five.
Key takeaways
- Custom ecommerce builds run $80,000 to $500,000 upfront, with the typical mid-market build landing near $120,000-$250,000, against Shopify Plus's about $40,000-$80,000 for year one.
- By year five, a custom build often runs 25-35% cheaper than Shopify, since Shopify's transaction fees scale with revenue while a custom platform's costs stay close to flat.
- At $1 million in annual revenue, Shopify's transaction fees alone cost $29,000-$31,500 a year; at $10 million, that climbs to $290,000-$315,000.
- $5 million in annual GMV is the benchmark most guides point to: below it, Shopify's total cost wins; above it, a custom build often pays for itself within 12-18 months.
The upfront cost gap
A custom ecommerce build runs $80,000 to $500,000, with the typical mid-market project landing at $120,000-$250,000 once you account for catalog size, pricing logic, and how deep it connects to an ERP or warehouse system. Shopify Plus, by contrast, costs about $40,000-$80,000 for a full first year once you total the subscription, transaction fees, and apps. That gap makes Shopify the cheaper choice at launch for most merchants, and it is why most stores start there rather than commissioning a custom platform from day one.
Why the gap closes as revenue grows
The cost picture shifts because Shopify's fees scale with revenue while a custom platform's core costs stay flat once it is built. At $1 million a year in revenue, Shopify's transaction fees alone run $29,000-$31,500 a year. At $10 million, the same fee structure costs $290,000-$315,000 a year. Add the apps most Shopify stores run, an average of 6-8 paid apps at $50-$200 a month, and that is another $3,600-$19,200 a year on top. A custom build carries none of that per-transaction cost; the money goes into the initial development instead. By year five, that difference often makes a custom build 25-35% cheaper in total than the equivalent Shopify Plus setup.
Where the crossover point sits
Most cost guides point to about $5 million in annual GMV as the level where a custom build starts to win on total cost of ownership. Below that, Shopify's transaction fees stay manageable next to the upfront cost of building something from scratch. Above it, a custom platform's fee savings can cover the original development spend within 12-18 months, especially for stores past $2 million a year in revenue running thin margins where every percentage point of fee matters. That $5 million figure moves with margin structure and product category, so treat it as a starting benchmark, not a fixed rule.
| Cost dimension | Shopify Plus | Custom build |
|---|---|---|
| Upfront cost | $0 build cost, $2,300+ a month subscription | $80,000-$500,000, often $120,000-$250,000 |
| Transaction fees at $1M/yr | $29,000-$31,500 a year | None beyond payment processor rate |
| Transaction fees at $10M/yr | $290,000-$315,000 a year | None beyond payment processor rate |
| Year 5 total cost of ownership | Higher, fees scale with revenue | About 25-35% lower once built |
Neither path is the safe default past a certain size. Staying on Shopify Plus well beyond $5 million in GMV means paying a growing fee on every sale; moving to a custom build too early means carrying $100,000-plus in development cost before the store proves it needs that flexibility. We scope both paths, Shopify Plus builds and fully custom platforms, through our custom software development and Shopify development work.
Frequently asked questions
Is a custom ecommerce build cheaper than Shopify long-term?
Past about $5 million in annual GMV, often yes. A custom build carries no per-transaction platform fee, so the fee savings can outpace the $80,000-$500,000 upfront cost within 12-18 months at that scale. By year five, the total cost of ownership often favors custom by 25-35%.
How much does a custom ecommerce platform cost to build?
Most custom builds run $80,000-$500,000, with the typical mid-market project landing at $120,000-$250,000. The range depends on catalog size, pricing complexity, and how many systems, ERP, warehouse, accounting, the platform needs to connect to.
At what revenue does a custom build make sense?
$5 million in annual GMV is the benchmark most cost guides use. Below it, Shopify's subscription and fees tend to cost less than building and maintaining a custom platform. Above it, especially past $2 million a year with thin margins, the fee savings on a custom build can cover the development cost within 12-18 months.
What extra costs come with Shopify beyond the subscription?
Transaction fees are the largest one: about $29,000-$31,500 a year at $1 million in revenue, climbing to $290,000-$315,000 at $10 million. Add the apps a typical store runs, 6-8 paid apps at $50-$200 a month, for another $3,600-$19,200 a year.
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