How to Build a Multi-Tenant SaaS with Laravel

A multi-tenant SaaS lets many customers ("tenants") share one application while keeping their data separate. In Laravel you choose between two models — a single shared database or a database per tenant — and that one decision shapes cost, complexity, and how far you can scale.

What "multi-tenant" actually means

Every customer logs into the same app at the same URL (or their own subdomain), but each only ever sees their own data. Slack, Shopify, and every "sign up and get your own workspace" product works this way. The engineering challenge is isolation: making it impossible for Tenant A to ever touch Tenant B's records.

Model 1 — Single database, shared tables

Every table gets a tenant_id column, and a global query scope automatically filters every query to the current tenant. This is the right default for most SaaS products.

• Pros — cheapest to run, one migration to maintain, trivial cross-tenant analytics, scales to thousands of tenants.
• Cons — a missing scope is a data leak, so isolation must be enforced centrally and tested hard.

// A global scope applied to every tenant-owned model
protected static function booted(): void
{
    static::addGlobalScope('tenant', function (Builder $q) {
        if ($id = auth()->user()?->tenant_id) {
            $q->where('tenant_id', $id);
        }
    });
}

Model 2 — Database per tenant

Each tenant gets its own database; the app switches the connection at runtime based on the current tenant. Packages like stancl/tenancy automate this.

• Pros — hard isolation, per-tenant backup/restore, easier compliance for regulated data.
• Cons — running migrations across hundreds of databases, harder cross-tenant reporting, more DevOps overhead.

Choose this only when a real requirement forces it. For 90% of products, Model 1 wins.

The rest of the SaaS stack

Admin panel — Filament

Filament gives you a production admin panel fast: resources, role-based permissions, and its own multi-tenancy support for per-tenant dashboards. It is my default for SaaS back-office and CRM screens.

Billing — Laravel Cashier + Stripe

Cashier handles subscriptions, trials, proration, and Stripe webhooks. Add a local gateway alongside for Bangladeshi customers when needed.

Background work — queues

Email, exports, and third-party calls belong in queued jobs (Redis + Horizon), never in the request cycle. This keeps the app fast as tenants grow.

How to choose — a quick rule

Start with a single shared database and a rock-solid tenant scope. Move to database-per-tenant only when a specific client's compliance or isolation requirement demands it. Premature isolation is one of the most common ways SaaS projects burn their budget before launch.

Build it right the first time

Multi-tenancy is cheap to design in on day one and painful to retrofit later. If you're planning a SaaS, this is exactly what I build end-to-end — see SaaS development and Laravel development, or read how to hire the right engineer. Ready to start? Message me on WhatsApp for a fixed quote within 24 hours.