Most SaaS products never launch. Not because the idea isn't viable, but because the founder spent months setting up infrastructure instead of validating their idea. Auth, billing, databases, emails, and landing pages stole three months out of the time needed to actually create their product.
A SaaS starter is what keeps that from happening. This article is your guide to understanding what SaaS is, what a SaaS starter consists of, what platforms and kits to use in 2026, and the exact steps to take to go from an idea to a launched product faster than you imagined.
What Is SaaS?
SaaS stands for Software as a Service. SaaS is software hosted by a provider and accessed via the internet, usually in a web browser. You pay for SaaS software on a recurring basis (monthly/annually) instead of purchasing it outright.
Key properties of SaaS software:
Doesn't require installation or downloads
All updates, maintenance, and hosting are done by the provider
Paid on a monthly or annual basis
One codebase for multiple customers
Examples of SaaS you definitely use: Gmail, Slack, Dropbox, Notion, Figma, Zoom, Shopify, and HubSpot.
The business model is efficient because the software provider doesn't need separate setups for every customer - the same codebase can host thousands of customers. On the consumer side, you get access to a product that is always up to date without any IT headaches.
SaaS vs other cloud models
There are three terms commonly thrown around - SaaS, PaaS, and IaaS.
SaaS (Software as a Service):
You're a customer of the final product (Gmail, Slack, Netflix). Don't manage anything but the software experience itself.
PaaS (Platform as a Service):
Build your own application on top of the existing platform (Heroku, Vercel, Google App Engine). You write your application while the provider handles hosting and infrastructure.
IaaS (Infrastructure as a Service):
Rent raw computing resources (AWS EC2, Google Compute Engine). Everything above the server is controlled by you.
When a developer builds an app for the first time, they're building a SaaS product to be deployed on PaaS infrastructure (Vercel) running on IaaS (AWS).
What Is a SaaS Startup?
A SaaS startup is a business creating and selling software delivered over the internet in a subscription format. They retain control over their software, infrastructure, and customer relationships.
How a SaaS startup differs from other software business models:
Recurring revenue. Customers pay monthly/annually. MRR (monthly recurring revenue) is the key metric.
Scalable delivery. Zero cost (per unit) for adding customers compared to packaged software or hourly services.
Customer retention is equally valuable as customer acquisition. Because of the recurring subscription payments, losing customers equals a loss of revenue for a software company. Therefore, keeping customers is as crucial as finding new ones.
Iteration speed is an advantage. Unlike packaged software, which has to be shipped annually, SaaS products are updated daily/weekly. This allows a lot of flexibility and a continuous feedback loop between users and product creators.
Technical stack of a SaaS startup is relatively simple. Web app, database, payment processor (Stripe), email service, and auth. That's precisely what a SaaS starter kit provides.
What Does a SaaS Starter Include?
A SaaS starter is a fully functional product template for building software products. It includes all the infrastructure needed to create a product but not yet the product itself. Here's what a comprehensive starter should include.
Authentication
Basics include email & password, OAuth integration with popular providers (minimum: Google, GitHub), password reset, email verification. Complete setup would involve session management, route protection via middleware, magic link login, and optionally two-factor authentication.
It's surprising how many developers underestimate the complexity of authentication flows. A fully fledged, safe-to-use auth setup with all edge cases accounted for takes one to two weeks of development time. A starter kit gives you all of this on day one.
Subscription Billing
Use Stripe. Subscription billing isn't simply about the connection with Stripe. Your goal is to implement a full cycle of subscription processing: subscription creation, upgrades/downgrades, cancellation, trial period handling, failed payments, dunning emails, and webhooks.
Webhook verification is crucial here. Every change in the subscriber's status must be reflected in your backend database. Failed payment means no access to software; successful retry means access is restored. This is one of the mistakes that will bite you in production.
Database
Type-safe ORM (prisma or drizzle), basic schema for users and organizations, migration setup for safe updates to your production environment. Without migrations, you can't change your DB schema on the go without risking data loss or downtime.
Multi-Tenancy
For products designed for businesses or teams, your data model needs to scope everything to the organisation level. User belongs to an organisation. Every object belongs to an organisation. Role-based access (owner, admin, member) controls what actions each user can perform.
This is a killer mistake that's easy to make when building a SaaS product starter. Retrofitting multi-tenant support after the product launch would be costly and cumbersome.
Landing Page
Fully functional marketing website with sections like: hero (your story), features, pricing (with real connections to Stripe), testimonials, and call-to-actions. Many developers underestimate the value of having a marketing page included. Starter kits that give you only a dashboard scaffold force you to develop a separate marketing website.
User Dashboard
Navigation, account settings, billing management, customizable UI for adding product features.
Transactional Email
Welcome email, password reset instructions, invitation to join a team, payment receipt, payment failure message. Transactional email templates integrated with a third-party service.
Developer Tooling
TypeScript (for sanity), ESLint, Prettier, pre-commit hooks, testing (testing is a must for production software!), Sentry (error tracking tool), CI/CD (continuous integration and deployment).
What Is the Fastest Way to Launch a SaaS?
The fastest route depends on your technical background and budget. Here’s the practical breakdown.
Option 1: Use a Next.js SaaS starter kit (best for developers)
Start with a production-ready SaaS starter, connect your API keys, adjust the landing page and pricing, build your main feature, then deploy on Vercel. With a solid starter kit, you can realistically launch a SaaS with working authentication and billing within a few days.
This is the ideal route for developers who want ownership of the codebase and are comfortable working with Next.js.
Option 2: Use no-code or low-code tools (best for non-developers)
Platforms like Bubble, Softr, or Webflow combined with Memberstack allow you to launch SaaS products without writing code. They’re excellent for speed and early validation, though customization and scalability become limiting as the product grows.
More on this in the no-code section below.
Option 3: Build everything from scratch (slowest but most flexible)
You can start with create-next-app and implement authentication, billing, database logic, emails, and infrastructure yourself. This gives you complete control, but in reality it often takes several months before users can actually register and pay.
This path only makes sense if your product requirements genuinely cannot fit into an existing starter architecture.
What actually slows launches down
The biggest problem usually isn’t technology. It’s hesitation.
Founders spend weeks comparing frameworks, auth systems, ORMs, and billing tools instead of shipping. The purpose of a SaaS starter kit is not to create the “perfect” architecture. Its purpose is to eliminate decision fatigue and give you momentum.
Choose a starter that covers your core requirements, configure it, launch quickly, and improve as you go.
How to Start a SaaS Business with Next.js
Next.js remains the dominant framework for SaaS applications in 2026. Here’s why developers continue choosing it.
Why Next.js for SaaS
Server-side rendering matters. Marketing pages need visibility in search engines. Traditional client-side React apps often send nearly empty HTML to crawlers, while Next.js renders pages on the server, improving discoverability and rankings.
Full-stack in one codebase. Next.js supports both UI rendering and API routes inside a single project, which removes the need for maintaining a separate backend in many SaaS products.
App Router and Server Components. The App Router and Server Components simplify patterns around authentication, layouts, and data loading. Most modern starter kits already rely on this architecture.
Vercel deployment. Deploying a Next.js application is extremely straightforward. Connect a GitHub repository to Vercel and deployments happen automatically.
Strong ecosystem. Nearly every major SaaS tool integrates directly with Next.js, including Stripe, Clerk, Prisma, Drizzle, Supabase, Resend, and Sentry.
The basic tech stack decision
The four decisions that matter most:
Auth: Choose between self-hosted authentication like Auth.js or managed services like Clerk or Supabase Auth.
Auth.js provides complete ownership and avoids per-user pricing.
Clerk offers polished UX, built-in features, and simpler management.
Database: Most SaaS apps use PostgreSQL with either Prisma or Drizzle ORM.
Prisma has a larger ecosystem and easier onboarding.
Drizzle is more lightweight and SQL-oriented.
Both are excellent choices.
Billing: Stripe dominates SaaS billing in 2026. In most cases, there’s little reason to choose anything else.
UI: Tailwind CSS combined with Shadcn UI has effectively become the standard UI setup for modern Next.js SaaS products.
Starting with a starter kit
A good SaaS starter kit already makes these decisions for you. Instead of researching infrastructure for weeks, you can focus immediately on building the feature users will actually pay for.
How to Launch a SaaS Fast with a Next.js Starter
Here’s the real-world process for getting from idea to launch as fast as possible.
Step 1: Pick your starter (Day 1)
Your choice depends on your goals and experience level.
Solo founder, MVP: ShipFast or ixartz SaaS Boilerplate (free)
Small team, B2B SaaS: Kostra or Supastarter
Enterprise compliance requirements: BoxyHQ SaaS Starter Kit (free)
Learning and prototyping: Vercel Next.js SaaS Starter (free)
Step 2: Clone and configure (Day 1)
npx degit username/repo my-saas
cd my-saas
npm install
cp .env.example .env.local
Fill in your environment variables: database URL, Stripe keys, auth provider keys, email provider keys. Most starters have documentation that walks through each variable.
Step 3: Run it locally and trace the code (Day 1-2)
Before adding your own features, understand the codebase.
Follow the signup process from frontend to backend.
Trace how billing events update the database.
Learn the folder structure and request flow.
Many developers skip this step and regret it later when debugging production issues.
Step 4: Update your database schema (Day 2)
Starter kits usually provide users, sessions, and organizations by default.
Now add the database models your actual product needs.
Update the schema
Generate migrations
Apply migrations locally
This creates the foundation for your product-specific functionality.
Step 5: Update the landing page (Day 2-3)
Replace generic placeholder text with your actual messaging.
Update:
Hero section
Features
Pricing plans
Calls to action
Stripe-connected pricing tables
As soon as possible, add screenshots, demos, or examples of the product.
Step 6: Build your core feature (Day 3-10)
This is where your real product work begins.
Authentication, billing, dashboards, and infrastructure are already handled by the starter kit. Your job is now to build the feature users will actually pay for.
This is the only truly unique part of your SaaS.
Step 7: Set up email flows (Day 8-9)
Before launch, make sure all critical emails work correctly:
Welcome emails
Trial expiration reminders
Payment confirmations
Failed payment notifications
Invitation emails
Connect your email provider and test every flow manually.
Step 8: Test the full user journey (Day 10)
Act like a real customer.
Create a new account
Complete onboarding
Use the application
Upgrade using Stripe test cards
Cancel a subscription
Verify that the UI and database correctly reflect every billing state
This catches the majority of production issues before launch.
Step 9: Deploy and switch to live Stripe (Day 10-11)
Push your code to GitHub.
Connect the repository to Vercel.
Add production environment variables.
Switch Stripe from test mode to live mode and configure production webhooks.
Once this is complete, your SaaS is technically live.
Step 10: Launch
Announce your product to your audience.
Monitor logs and error tracking closely.
Expect bugs during the first few days and be prepared to fix them quickly.
Best SaaS Starter Templates, Kits & GitHub Repos
SaaS starter templates (free)
Vercel Next.js SaaS Starter: This is the official minimal starter created by the Next.js team. Includes App Router, Auth.js, Drizzle ORM, Postgres, Stripe, Tailwind CSS, and Shadcn UI. Purposefully barebones. Best when you want to know all the bits of your foundation.
GitHub: vercel.com/templates/next.js/next-js-saas-starter or github.com/nextjs/saas-starter
ixartz SaaS Boilerplate: The best full-featured free choice. Multi-tenant system, Clerk authentication, role-based access control, Stripe billing, internationalization, Shadcn UI, Drizzle ORM, testing using Vitest and Playwright, Sentry error reporting, and CI/CD. Well-maintained.
GitHub: github.com/ixartz/SaaS-Boilerplate
BoxyHQ SaaS Starter Kit: Free, open source, and geared towards enterprises. Has SAML SSO, directory synchronisation, audit logs, team management features, and Stripe billing. Created by a security-first team.
GitHub: github.com/boxyhq/saas-starter-kit
Play Next.js: Free and open-source. Built with Next.js, Tailwind CSS, PostgreSQL, Auth.js, Stripe, and MDX blogging. Simple project structure suitable for startups looking to start with a clean slate.
GitHub: github.com/NextJSTemplates/play-nextjs
Paid SaaS starter kits
Kostra: A paid Next.js SaaS boilerplate designed for teams looking for production-grade auth, billing, and multi-tenancy out-of-the-box. Has a great architecture and is actively maintained with up-to-date docs. Designed to be owned and extended, not simply forked. Ideal for: Product teams building SaaS companies.
ShipFast: The leading choice among solo founders and indie hackers. Fantastic documentation, extensive Discord community, covers authentication, Stripe billing, transactional emails, SEO, landing pages, etc. Fast deployment is its primary concern. Ideal for: Founders who want their apps deployed in as little time as possible.
Supastarter: Supastarter provides top-notch multi-tenancy features, team management, role-based access control, support for both Stripe and Lemon Squeezy, internationalization, and superb documentation. Multi-tenancy comes first in its architecture. Ideal for: B2B SaaS with sophisticated multi-tenancy needs.
MakerKit: With several database backends including Supabase, Drizzle, and Prisma. Has versions built on Next.js and Remix. Offers internationalization and powerful RBAC. Active maintenance since 2022. Ideal for: Teams in the Supabase stack or needing RBAC.
Tips for finding good SaaS starter GitHub repos
When searching GitHub for SaaS starters, these queries return strong results:
nextjs saas starter
saas boilerplate nextjs
next.js saas template
saas starter kit TypeScript
Sort by Most Stars. Look at the last commit date. A 3,000 Star repository with no commits in the last year can be considered dead code.
NestJS SaaS Starter
NestJS is a server-side backend framework written with TypeScript running on Node.js. It's distinct from Next.js, which is a full-stack React application. NestJS is structured similar to Angular, but focused only on the server side.
Some startups pair the two technologies in a monorepo fashion, using NestJS for API and Next.js for the client side.
When to use a NestJS SaaS starter
A NestJS starter makes sense when:
Need for a more robust structured API backend than what Next.js API routes can provide
Backend engineers prefer a separate API backend
Building microservices or other complex API structures
Product requires backend patterns like CQRS, event sourcing, and GraphQL
For most early stage Saas applications, Next.js API routes will serve backend requirements well enough. At this point, adding a backend with NestJS increases complexity without necessity.
Notable NestJS SaaS starters on GitHub
Ultimate Backend - Highly-opinionated enterprise-grade SaaS starter with multiple tenants, GraphQL, microservice architecture, CQRS pattern, Apollo Federation, Event Sourcing pattern, Auth and AuthZ. Available on GitHub.
Multi-Tenant SaaS Starter NestJS - Production-ready NestJS backend with multi-tenancy at row-level isolation, JWT authentication with refresh tokens, organizations, role-based access control (Owner, Admin, Member) and feature flags. Called "Laravel Jetstream for NestJS". Available on github.com/OwaliShawon/Multi-Tenant-SaaS-Starter-NestJS.
SaasterKit Backend (NestJS) - A NestJS template with all the configuration required to work alongside Next.js frontend. Built using Prisma database, Supabase PostgreSQL, Clerk Auth and Lemon Squeezy for payments.
NestJS Boilerplate with Turborepo - Monorepo solution combining NestJS API backend with Next.js fronted. JWT Auth, role-based access control, audit logs and Domain-driven design architecture.
NestJS + Next.js together
When pairing NestJS and Next.js together, the biggest architectural choice comes down to communication between the two pieces. Your options would be REST API calls or GraphQL or tRPC type-safe RPC protocol.
The best choice for monorepo is Turborepo structure. This gives you the best of both worlds by sharing types and utilities and having a single pnpm dev command to start the entire monorepo including both back-end and frontend.
For most startups founders: start with Next.js API routes. Consider switching to NestJS only when you really need its structure and architecture.
Can I Build a SaaS With No Code?
Yes. It's possible to build SaaS without knowing how to write code – if done properly.
No-code platforms for SaaS
Bubble the most powerful no-code platform for SaaS. You can develop complex data structures, workflows, APIs, and UI without coding. Comes with a Stripe integration, auth natively built-in, and multi-user capability. Some real businesses have been created using Bubble. It's limited compared to custom software in terms of performance and possibilities, but works as a way for non-programmers to validate SaaS ideas.
Webflow + Memberstack combination is enough to build a marketing site (with Webflow) and take care of users (auth & subscriptions) without writing a line of code. Useful for content-focused SaaS products where the main app functionality is relatively straightforward. Limited with regards to logic capabilities.
Softr builds applications on top of Airtable databases. Quick setup process but limited in scope.
Glide and Adalo are no-code SaaS platforms aimed at building mobile-first products. Not suitable for web apps.
When is no-code the right solution
No-code SaaS makes sense when:
You are a non-technical founder validating your idea before starting to develop a custom product
The core value of your SaaS is content or data rather than software itself
Validation speed is crucial to success
When is no-code not enough
Using no-code is a bad idea if:
Your application needs custom logic that cannot be written in a no-code environment
Performance becomes an issue at scale
You require integrations that no-code SaaS platforms don't support
Your requirements for data storage and privacy cannot be met
You are going to seek funding soon, and your investors will insist on seeing a proper codebase
Straightforward advice for technical founders: forget about no-code. Go with a Next.js SaaS starter. You'll have practically the same speed benefit but no limitations in the future.
Advice for non-technical founders: start with no-code to validate your idea. If the market takes off, bring in a developer and migrate to proper code-based architecture.
Frequently Asked Questions (FAQs)
What is a SaaS starter template?
A SaaS starter template is a codebase with all core features of any SaaS product out-of-the-box: auth, subscription billing, database, transactional emails, landing page, and user dashboard. Instead of building the whole infrastructure yourself, you fork the starter template and extend its functionality with your custom product features. The terms 'starter template,' 'starter kit' and 'boilerplate' can be used interchangeably to denote the same concept with slight nuances in meaning.
What is the best SaaS starter kit?
For free options: the most feature-rich free SaaS starter kit for Next.js is the ixartz SaaS Boilerplate (GitHub repo), which offers multi-tenancy, Clerk auth, Stripe billing and full test suite. Paid: the best option for building production-quality SaaS products for teams is Kostra, which comes with clean architecture, maintenance, and documentation. Solo founders looking for quickest possible start: check out ShipFast for the best reputation in launching products fast.
Where can I find SaaS starter kits on GitHub?
Search using terms like saas starter kit, nextjs saas starter, or saas boilerplate. Sort by Most Stars. Check the last commit date before choosing.
Actively maintained free options currently on GitHub: ixartz/SaaS-Boilerplate, boxyhq/saas-starter-kit, nextjs/saas-starter.
The GitHub topic saas-starter-kit also shows a curated list.
Is there a free Next.js SaaS starter kit?
Yes. Best free options currently are Vercel Next.js SaaS Starter, available at vercel.com/templates, ixartz SaaS Boilerplate, the BoxyHQ SaaS Starter Kit, and the Play Next.js starter. These are all completely free to fork and use without additional licensing costs.
What is a NestJS SaaS starter?
A Nest.JS SaaS starter is a backend boilerplate based on NestJS, which is a server-side TypeScript Node.js framework. Compared to plain Next.js API Routes, NestJS is a better fit for complex API architectures and microservices when you prefer strict separation of the frontend and backend codebases. Notable GitHub repositories offering NestJS SaaS starters: Ultimate Backend (multi-tenant with CQRS and GraphQL) and Multi-Tenant SaaS Starter NestJS (row-level tenant isolation, JWT and RBAC). Early-stage SaaS products rarely need to separate frontend and backend; API Routes are sufficient for backend needs until scaling.
How do I start a SaaS business with Next.js?
Select a starter kit with auth, billing and multi-tenancy. Fork it. Configure the .env file. Connect Stripe and auth providers account. Design your database schema for your domain. Implement the single core feature that makes your product valuable. Setup transactional email flows. End-to-end test the user flow. Deploy to Vercel. Activate the Stripe test account and switch billing into live mode. Launch. The starter kit takes care of the infrastructure. You implement the product itself.
Is ChatGPT a SaaS Product?
Yes, ChatGPT is a SaaS product.
Users can access it through a web browser or dedicated mobile app. OpenAI owns and operates all the infrastructure, hosting for AI models, and related software. Users can either pay a subscription for ChatGPT Plus plan, or they can access ChatGPT for free. There is nothing to install, nothing to configure, and nothing to maintain.
The API layer, that allows developers to incorporate GPT-4o models into their apps, is actually closer to PaaS, since developers can build custom products around OpenAI's AI infrastructure.
ChatGPT itself though, the product that users interact with at chat.openai.com, is SaaS.
Also, there are some other examples of AI products that use SaaS architecture: Claude (Anthropic), Gemini (Google), Perplexity, Midjourney, Notion AI, and GitHub Copilot.
Is Netflix a SaaS or PaaS?
Netflix is a SaaS product, more precisely, it's a consumer SaaS product.
You subscribe for a monthly fee. You can watch movies and TV series using a browser or a special application. Netflix manages all aspects of their product: from the video library to streaming services, recommendations, and software updates. Everything is managed by Netflix. There is nothing to install, configure, or maintain.
In the background, Netflix uses AWS infrastructure. But what the company delivers to users is a SaaS product.
It's important to note that not all SaaS products are business software. Netflix, Spotify, and YouTube Premium fall into the consumer category while keeping the same SaaS business model: subscription-based, delivered through the Internet, and provided "out of the box" by the service provider.
Can I build a SaaS with no code?
Yes. Bubble is the most versatile no-code platform for SaaS with complex functionality. Webflow with Memberstack can be used for building content-focused SaaS applications. Using no-code tools is a valid approach for non-technical founders to quickly validate ideas for SaaS products. Limitations are real, however: poor performance, customisation limitations, and inability to impress investors with your technical skills. A developer can achieve the same quick start using the Next.js starter kit instead.
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