Developing a SaaS product from scratch in 2026 will cost far more than any entrepreneur thinks. Based on an analysis, developer effort to create a SaaS platform from scratch amounts to 200+ hours. Auth requires a week. The billing and webhooks process requires another week. Retrofitting multi-tenancy can add a month.
A starter kit cuts the amount of time needed to develop a SaaS product drastically. In this guide, I'll explain what a SaaS starter kit is, what it entails, which free and paid options worth using, and how to pick the right kit for you.
What Is a SaaS Starter Kit?
A SaaS starter kit is a pre-written codebase containing all the basic functionalities required to set up a SaaS solution. A starter kit will provide a ready-made foundation with auth, billing, a database connection, and a simple UI allowing you to immediately start adding functionalities for which the product will be famous.
Here's how to think about it: when developing a project management application, your competitive advantage lies in project management functionality and nothing else. Why would you waste time implementing something as basic as password reset emails when a starter kit allows you to skip all the hassle and focus on building an outstanding product?
To reiterate, the terms "starter kit" and "boilerplate" are often used interchangeably in the Next.js world. Although there are significant differences between these concepts as explained below, most developers treat these terms equally.
What Is the Difference Between a SaaS Boilerplate and a Starter Kit?
As mentioned earlier, the two terms share many similarities, but still refer to slightly different things in terms of what the author wants to say.
A boilerplate refers to the bare minimum of a project setup: folders, typescript configuration, ESLint, Prettier, and base dependencies. The boilerplate provides you with a clean slate without opinions on what your application should do, leaving everything up to you.
A starter kit means that more components are included. They ship with existing features, not just scaffolding. In the case of SaaS, starter kits contain a built-in authentication module, an already linked database, Stripe integration with webhook handling, a landing page, and a dashboard for users. Of course, everything can be configured further, but it works out of the box.
In summary, the boilerplate will get you from zero to "my app works". The starter will take you from zero to "users can create accounts, pay, and utilise my service".
Terms such as "Next.js SaaS starter", "SaaS template", "SaaS kit", and "SaaS boilerplate" refer to this type of product. Consider the contents instead of the name.
What Features Does a Next.js SaaS Starter Kit Have?
When it comes to building a production-ready SaaS application, a landing page and a sign-up/login form are not enough. Let's look at the basic feature list of a SaaS starter in 2026.
Authentication
Basic: email/password, OAuth (at least Google & GitHub providers), password recovery, email confirmation upon sign-up. Advanced options: Magic Link login, two-factor authentication, and proper mobile session handling.
What should be verified: is it protected with server-side middleware or only client-side redirects? Client-side redirect protection could be easily bypassed by attackers. Middleware-based server-side protection cannot.
Subscription Billing
Stripe is the standard. But "Stripe integration" covers a wide range. A real billing implementation includes:
Subscription creation across multiple pricing tiers
Upgrade, downgrade, and cancellation handling
Failed payment handling with retry logic
Webhook verification to prevent spoofed events
Database sync so subscription status stays accurate
A customer portal where users manage their own billing
Webhooks are the most crucial part here. Stripe provides an event whenever subscriptions change their state. In case your database fails to reflect the new state immediately, your users will not have access to purchased services or they will have access to non-subscribed content.
Database and ORM
A well-structured database is equipped with a type-safe ORM (for example, Prisma or Drizzle). Base models: Users, Accounts, Sessions. A proper migration workflow allows you to safely modify your database in production.
Using raw SQL in a Next.js application means additional effort for debugging. Type-safe ORMs detect schema inconsistencies at compile-time rather than in production.
Multi-Tenancy
This is the architectural constraint that is handled badly in most of the available SaaS starters. Proper multi-tenancy implies that each customer organisation has its own fully isolated data. For implementing proper multi-tenancy, your architecture should treat the organisation as a first-class citizen. Each and every user-generated entry would be associated with some organisation. Also, users are able to be members of multiple organisations and be able to switch between them. Access levels (owner, admin, member) determine what users can or cannot do with organisational resources.
In the absence of multi-tenancy from scratch, introducing this architectural constraint in the existing product would require a complete rewrite of your data model. Data model refactoring under a live product is one of the most tedious tasks that can happen to any development team.
Landing Page
A landing page is an integral part of any SaaS solution. Your starter kit must include at least the following parts:
Hero Section
Feature Highlights
Pricing Table linked to your Stripe Products
Testimonials Section
Call-to-action components (with proper links)
User Dashboard
Once a user signed up successfully, she/he needs to land somewhere. User dashboard could include:
Navigation
Account Settings
Organizations Management
Subscriptions Management
Layout for customizing your product features
Transactional Email
As your project gets launched, you will definitely need welcome emails, password recovery letters, organization invitation emails, payment receipt confirmation emails, and failed payment reminder emails. Make sure that your SaaS starter kit includes these transactional emails with ready-to-use templates provided by some reliable service (Resend, Postmark, Sendgrid).
Developer Tooling
This feature cannot be omitted in a modern SaaS starter:
Typescript
ESLint
Prettier
Husky (precommit hook)
Testing configuration (vitest - for unit tests; playwright - for end-to-end tests)
Sentry (or similar) for error monitoring
CI/CD pipeline
Do We Really Need a SaaS Starter Kit?
Maybe you should ask this question instead of presuming an answer.
No, you don't need one if:
You're building the product and want to understand all the pieces in the puzzle. In this case, building auth and billing systems from scratch will teach you what starter kits never would.
You have particular architectural constraints not supported by existing starter kits. Perhaps you need unusual authentication mechanisms, a different billing system, or compliance with special laws that make the opinionated decisions of any starter kits a problem.
Your project is small enough for you to have a trivial amount of infrastructure. For instance, when you develop a simple command-line app that does not include subscriptions and basic auth, starter kits are too much overhead.
Yes, you probably need one if:
You're going to build a standard SaaS application and your time matters. The later your idea gets to be validated in the market, the more time it takes for you to find out whether it will work.
You're tired of building authentication and payment processes and ready to move on. This is your third such project from scratch, so it is really a matter of choice now.
You cannot afford a dedicated developer for at least two months to set up all the infrastructure and proceed with developing a product afterwards.
You want to make fewer mistakes because you've learned how to make them in the past. All the patterns for starters were reviewed and implemented dozens of times in other projects already.
The honest answer for most founders:
Yes, you need one. The time saved on infrastructure is almost always more valuable than the flexibility of starting from scratch, especially early in a product's life.
Should I Use a SaaS Starter Kit or Build from Scratch?
There is no question for the majority of cases, but let's be honest about all options.
The case for a starter kit
A good starter kit implements solutions that the author has found and implemented in production for common problems. There's no experience cost of dealing with production issues related to implementation. You start your project with this knowledge and understanding of potential gotchas.
It is all math. Writing a custom auth, implementing your own billing service, multi-tenancy, and email features from scratch would take a developer several weeks (4 to 6). With a starter kit, that process will not exceed 2-3 days. The economics are in favor of starter kits in this case even if they cost money.
Maintenance is shared among users of active starter kits who update dependencies, apply patches for discovered security vulnerabilities, and change some framework specifics that affect their operation.
The case for building from scratch
You have requirements that cannot be met by any starter kit available because your billing scheme, auth system, or data model is out of the box.
You prefer to have all decisions regarding architecture made and have full control over implementation details. Some opinions starter kits provide could interfere with yours and become an obstacle in the way of your product development.
The honest verdict
Unless your requirements don't match starter kits at all, use a starter kit for SaaS projects. Flexible enough solution created from scratch may be defeated by considerations of real time needed to develop it.
The danger is not in using starter kits. The real threat is posed by using them without thorough analysis. Read the code, know data flows, and configurations before starting development of your product based on a particular starter.
What Is the Best SaaS Starter Kit for Next.js in 2026?
Honest assessment by use case, no padding on this list.
Best Free SaaS Starter Kit: ixartz SaaS Boilerplate
Feature-rich next.js starter kit that covers multi-tenancy with team functionality, role-based access control, Clerk auth, Stripe subscriptions, i18n, landing page, user dashboard, SEO, logging with Sentry, CI/CD integration, Vitest & Playwright testing, and user impersonation. Actively maintained.
Stack: Next.js, TypeScript, Tailwind CSS, Shadcn UI, Clerk, Drizzle ORM, Stripe
Where: github.com/ixartz/SaaS-Boilerplate
Best For: Teams looking for the most comprehensive free SaaS starting point.
Best minimal free option: Vercel Next.js SaaS Starter
Official Next.js baseline template. By definition, minimal. Covers Auth using Auth.js, Stripe subscriptions, Postgres database via Drizzle ORM, and dashboard. Inherent minimality means less to learn and less to strip away.
Stack: Next.js 15, Auth.js, Drizzle ORM, PostgreSQL, Stripe, Tailwind CSS
Where: vercel.com/templates/next.js/next-js-saas-starter
Best For: Teams who want to know their entire stack.
Best for multi-tenancy and B2B: Supastarter
One of the best-paid SaaS kits for multi-tenant SaaS for businesses. Multi-tenancy, team management and role-based access control are baked into architectural decisions. Includes internationalization, transactional emails, and billing via either Stripe or Lemon Squeezy.
Stack: Next.js, TypeScript, Tailwind CSS, Shadcn UI, Prisma or Drizzle, Stripe or Lemon Squeezy
Where: supastarter.dev
Best For: B2B SaaS with organization customers, not individual customers.
Best for enterprise compliance: BoxyHQ SaaS Starter Kit
Open source. Concentrates on the enterprise features that most starter kits ignore: SAML SSO, directory sync via SCIM, webhooks, and audit logs. Maintained by a security-first team. This will address compliance needs that no other starter kit will for free, if your customers are large companies.
Stack: Next.js, Tailwind CSS, Prisma, PostgreSQL, SAML Jackson, Stripe
Where: github.com/boxyhq/saas-starter-kit
Best For: Enterprise B2B SaaS that needs compliance.
Best for solo founders: ShipFast
Strong track record for launching quickly. Includes auth, Stripe subscription, transactional emails, SEO, and landing page configuration. Has great documentation and large dev community who have launched SaaS using it. Con: opinionated stack, lack of flexibility.
Where: shipfa.st
Best For: Solo founders that want the quickest way to launch a product.
Best paid option for production teams: Kostra
Created for teams looking for production-ready authentication, multi-tenancy, and subscription. Clean architecture meant to scale. Actively maintained, documentation keeps up to date with the codebase.
Where: kostra.io
Best For: Product teams that want a starter kit they truly own and can maintain.
Can You Use a Next.js SaaS Starter for Free?
Yes, you can. There are quite a few very good free offerings out there. Let's take a look at what's available and where the limitations are.
Fully free SaaS starters
ixartz SaaS Boilerplate is the most fully featured of all the free offerings. Fully open-source version on GitHub that offers core features with no paid tier. There is a Pro tier offering additional templates and enterprise features.
Vercel Next.js SaaS Starter is completely free. Developed by the creators of Next.js. Completely free with no licensing fees.
BoxyHQ SaaS Starter Kit is completely free and open source. MIT licensed. Focused on enterprise auth and compliance.
Play Next.js is an open-source SaaS starter kit built specifically for startups. Includes authentication, PostgreSQL, Stripe, and MDX blogging. Open-sourced on GitHub.
Where free options fall short
While free starters work great for MVPs and side projects, they are usually lacking in the following aspects:
Active maintenance. The starter that is great right now might be using deprecated packages 18 months from now. Always double-check the date of the last commit before going down the free SaaS starter path.
Production edge cases. Starter kits that cost money are actively maintained by developers whose main incentive is that their kit continues working properly. Free starter kits rely heavily on the community for maintenance which might or might not be consistent.
Documentation quality. While most free kits come with README files, only a few offer documentation that explains architectural choices, security considerations, and migration paths.
Support. A free kit might lack support channels while paid kits will have dedicated ones. If anything goes wrong in your production system, who will you talk to?
How to download a free Next.js SaaS starter
Free SaaS starter kits are usually available on GitHub. There are two approaches:
Clone with Git:
git clone https://github.com/username/repo my-project
cd my-project
npm install
Clone without Git history (recommended):
npx degit username/repo my-project
cd my-project
npm install
degit gives you a clean project without the original repo's commit history, which is usually what you want when starting a new project.
Which SaaS Starter Kit Is Best for Solo Founders?
As a solo founder, you are different from everyone else. You care more about speed and less about architectural flexibility because you are the only dev here. Developer-friendly conventions become less important than the bottom line.
The key factors for solo founders:
Time to launch: How fast can you go from forking the repository to being able to have someone sign up, log in, and start paying for your service?
Quality of documentation: Does it contain all the information needed to set everything up and go live in just a couple of hours? Without hitting roadblocks along the way?
Community: Does this starter have a community of developers who've used it before and figured out all the little problems ahead of you?
Price: Is the one-time payment for the paid starter kit worth saving time?
Best options for solo founders:
ShipFast has the strongest reputation in the solo founder market. The documentation walks you through every step. The Discord community is active. Developers report going from purchase to a deployed SaaS with working auth and billing in under a day.
ixartz SaaS Boilerplate (free) is the best option if budget is a hard constraint. Feature-complete, actively maintained, large community on GitHub.
Kostra is worth evaluating if you're building something you intend to grow into a real business. The cleaner architecture and better documentation pay dividends when your solo project becomes a team project or when you need to add complex features later.
What to avoid as a solo founder: starter kits that require significant configuration to even get running locally. Your first hour with a kit should be spent reading the code, not debugging setup errors.
What Is the Best Multi-Tenant SaaS Starter Kit?
Among many other differences, multi-tenancy is definitely the factor separating starter kits built for real SaaS products from the basic ones.
What multi-tenancy actually requires
Multi-tenancy is not a feature you just implement once on top of your data model. It is a set of architectural choices that affects all your tables and all your queries. A multi-tenant architecture:
Treats organisations as first-class objects in the data model
Scopes every piece of data to a tenant (organisation), not just to a user
Isolates data so one tenant can never read or write another tenant's data
Supports users belonging to multiple organisations
Allows switching between organisations in the UI
Implements roles at the organisation level (owner, admin, member)
Bills at the organisation level, not just the user level
Multi-tenant starter kit options
ixartz SaaS Boilerplate offers built-in multi-tenancy support with teams, role-based access, user invitations, and data scoping to an organization. Completely free.
Supastarter offers complete multi-tenancy support with organization switching, RBAC, team invitations, and billing per organization. Multi-tenancy is part of the architectural vision of this starter from day one.
BoxyHQ SaaS Starter Kit offers multi-tenancy and role-based access for users. Also, it offers SAML Single Sign-On that is scoped to each organization separately – enterprise-style.
Kostra comes with an architectural vision of multi-tenant applications from the beginning. Multi-tenant architecture built directly into the data model allowing you not to refactor anything in the future.
MakerKit offers multi-tenancy support with role-based access and Supabase integration.
The honest thing most guides skip
Some of the SaaS starters advertised as multi-tenant use application-based multi-tenancy. What does it mean?
An application-based tenancy allows you to specify the id of an organization to all queries, which means that you need to be aware of this in every query in order to not break tenancy security.
Application-based multi-tenancy works fine. The only problem with it is the security issue as a single forgotten WHERE clause will allow one tenant to see another's data.
Make sure that tenant isolation is done in the database (PostgreSQL's Row Level Security or something like that) and not in the application.
FAQs
How to download a SaaS starter kit?
Most SaaS starter kits are available via GitHub. Use git clone or npx degit username/repo to get a fresh start without the source Git repository's commit history. The ixartz SaaS Boilerplate and BoxyHQ SaaS Starter Kit are both free. Purchasing paid starter kits like Kostra and ShipFast grants you access to their private GitHub repo.
Which is the best SaaS starter kit for Next.js?
The ixartz SaaS Boilerplate is the best free option since it includes multi-tenancy, Clerk auth, Stripe billing, i18n, and a complete test suite, for no charge. The best-paid option for teams shipping in production is Kostra, since it offers fully production-ready auth, billing, and multi-tenancy, with proper maintenance and documentation.
Which repositories hold free SaaS starter kits on GitHub?
Perform a search in the GitHub Marketplace for saas-starter-kit, nextjs saas starter, or next.js saas boilerplate and sort results by Most Stars. Some options that seem to be actively maintained are ixartz/SaaS-Boilerplate, boxyhq/saas-starter-kit, and leerob/next-saas-starter. Don't forget to look at when the last commit was made.
Is there any free Laravel SaaS starter kit?
There are many free Laravel SaaS starter kits available. Laravel Jetstream, built by the official Laravel team, is the free default choice and provides out-of-the-box auth, with Fortify, team management using an invitation flow, two-factor authentication, API tokens, and profile management. Wave is another free option that provides subscription-based billing and role management with a nice frontend dashboard. The Spark is a paid SaaS starter by Laravel creators with a full-fledged dashboard.
Do we really need a SaaS starter kit?
Not necessarily. However, most of the time, you'll be fine with one since building auth, billing, and user management is not your core competency when creating a SaaS app. The case for starting from scratch becomes stronger when you have unusual requirements, need to learn something in building, or the decision set in all starter kits conflicts with your application architecture.
In most cases, when you're a founder trying to build an app for validation: it is much more worthwhile to use a starter kit since the 200+ hours saved on infrastructure development can be invested in developing the actual product.
What is the best multi-tenant SaaS starter kit?
If you're looking for free options: The ixartz SaaS Boilerplate has multi-tenancy with team support and RBAC. In addition, the BoxyHQ SaaS starter introduces SAML SSO scoped to organisations for enterprise usage.
For the paid options: The Supastarter is best suited for teams where multi-tenancy is crucial. Kostra is recommended for those who are shipping and have some budget for maintaining the starter's codebase.
Is there any free Next.js SaaS starter kit?
Yes. There are multiple good free options in 2026. They include ixartz SaaS Boilerplate (github.com/ixartz/SaaS-Boilerplate), Vercel Next.js SaaS Starter (vercel.com/templates), BoxyHQ SaaS Starter Kit (github.com/boxyhq/saas-starter-kit), and the Play Next.js starter. Each option is entirely free and open source with no license cost.
What is the BoxyHQ SaaS starter kit?
The BoxyHQ SaaS Starter Kit is a free, open-source Next.js boilerplate that is provided by BoxyHQ – an organisation specialising in APIs for enterprise security and privacy. In addition to typical SaaS starter kit functionality (auth, team management, Stripe billing, webhooks), it also includes advanced options that are not present in other kits: SAML SSO via Jackson, directory sync using SCIM, and audit logs using Retraced. Built on Next.js, Tailwind CSS, Prisma, and PostgreSQL. You can access the starter at github.com/boxyhq/saas-starter-kit.
What is the SaaS starter kit by Bulletproof Next.js?
When talking about the SaaS starter kit by Bulletproof Next.js, we should point to the ixartz SaaS Boilerplate, which applies architectural patterns introduced in the Bulletproof React book to Next.js, providing SaaS-related improvements. Its main features include multi-tenancy, Clerk auth, Stripe billing, i18n, Shadcn UI, Drizzle ORM, Vitest, and Playwright. Free and open source on GitHub at github.com/ixartz/SaaS-Boilerplate.
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