Why every quote you get looks different
Search for the cost of a SaaS MVP and you will find answers anywhere from $3,000 to $150,000. None of them are lying. They are pricing different things. One quote includes design, testing and a month of support after launch. Another is a developer's time and nothing else. One assumes a single type of user and email login. Another assumes an admin panel, payments, team accounts and a mobile app.
So the useful question is not what an MVP costs. It is what your MVP needs, and how long a competent team takes to build it. Once you know that, the price is multiplication.
The formula behind every estimate
Every honest estimate comes down to the same line: people, multiplied by weeks, multiplied by a weekly rate, plus a buffer for the things nobody saw coming. Agencies wrap this in different packaging (fixed price, monthly retainer, time and materials) but underneath, the numbers are the same.
A typical first version of a B2B SaaS product needs one senior engineer who owns the architecture, one or two more engineers, part of a designer's time and part of someone's time for testing and release. Built well, a focused scope takes 8 to 14 weeks.
“If an estimate does not tell you how many people are working for how many weeks, you cannot compare it with anything.”
Here is a worked example. These are illustrative assumptions, not a price list. Three engineers and a half-time designer, for 10 weeks, is about 35 person-weeks. At a blended rate of $1,200 per person-week, roughly what a senior team in India charges, that is $42,000. The same team at US agency rates of $4,000 to $6,000 per person-week lands between $140,000 and $210,000. Same product, same weeks, very different invoice.
Add 15 to 20 percent as contingency. Every project uncovers something: an integration with worse documentation than promised, a compliance requirement that shows up in week six. A team that quotes with no buffer is either padding the base number or planning to send you a change request later.
Five decisions that change the cost more than anything else
Feature count matters less than people expect. These five decisions do most of the work:
How many kinds of user you have
A product with one type of user is one product. Add an admin, a team owner and a guest, and you are building permissions, separate screens and every combination of who can see what. Each new role is weeks, not days.
Integrations with other systems
Payments, CRMs, accounting tools, government APIs. Each one is a project of its own, and the time depends on the quality of the other side's documentation, which you do not control.
Web, mobile or both
Shipping a web app and a mobile app at launch roughly doubles the front-end work. Most B2B products should launch on the web and add mobile once usage shows which flows people want on their phone.
Compliance and data rules
Health data, financial data or customers who need audit logs, data residency or single sign-on add real engineering. Find out early. Retrofitting it is far more expensive than building it in.
How finished the design must be
A clean interface built on a solid component library costs a fraction of a fully custom visual design. For a first version, clarity beats polish. You can invest in brand once you know the product works.
Where to save, and where not to
The cheapest line of code is the one you never write. Before you negotiate rates, negotiate scope. Take your feature list and mark everything a paying customer would not miss in the first three months. On most lists, that is a third of the items.
Use existing services for anything that is not your product. Authentication, payments, email delivery, file storage and search are all solved problems. Paying a few hundred dollars a month for a managed service is cheaper than weeks of custom code you then have to maintain.
Do not save on the foundations: the data model, automated tests on the core flows, and a deployment pipeline that lets you ship a fix in minutes. These are cheap to do on day one and painful to add in month nine, when real customers are using the product and every change carries risk.
Budget for the year after launch
Launch is not the finish line. Plan for hosting, monitoring, security updates and the steady stream of fixes and small features that real users ask for. A common rule of thumb is 15 to 25 percent of the original build cost each year just to keep a product healthy, before any major new features.
When you compare quotes, ask each team what support looks like after launch, who owns the code, and how a new developer would take over if you parted ways. The answers tell you as much about the real cost as the number at the bottom of the proposal.