🚀 Overview

Invoice SaaS Management System is a modern subscription invoicing & billing automation platform
built with Laravel.
It allows businesses to create professional invoices, accept online payments, manage tax rules, and automate recurring billing —
all inside a beautiful client portal interface.

Designed from real SaaS and agency workflows, it reduces admin work, speeds up cash flow, and improves client transparency.

Best for: SaaS products, agencies, freelancers, hosting companies, and service providers.

✨ Key Features

• Invoice Creation: Branded invoices with custom fields, line items & taxes.
• Subscription Billing: Automated recurring invoices and renewals.
• Online Payments: Stripe, PayPal, bank transfer & custom gateways.
• Client Portal: Clients view & pay invoices, update profile & store payment details.
• Estimates/Quotes: Convert proposals to invoices with one click.
• Multi-Currency & Multi-Tax: Local tax laws, VAT/GST support, percentages & fixed rates.
• Products & Plans: Catalog for services/packages with auto-billing options.
• Revenue Analytics: Monthly revenue, overdue invoices, and tax reports.
• Team Roles: Admin, Manager & Accountant permissions.
• Email Notifications: Payment reminders, receipt delivery & due alerts.
• Coupon & Discount Support: Track promotions & campaigns.
• Export/Backup: Invoice PDF downloads & data exports.
• Localization & RTL: Global language & currency support.

⚙️ Technical Stack

• Framework: Laravel 9/10 (MVC structure)
• Database: MySQL/MariaDB
• Payment APIs: Stripe/PayPal with webhook signature validation
• Frontend: Blade templates + Bootstrap/Tailwind UI
• Server Requirements: PHP 8+, cURL, OpenSSL, FileInfo, MBString, PDO, ZIP extensions

🧩 Installation Guide

1. Upload system files to your server environment.
2. Run composer install to set up dependencies.
3. Create database → configure .env settings.
4. Run php artisan key:generate, then php artisan migrate --seed.
5. Configure cron for subscription billing automation.
6. Set up payment gateways and branding details.

📦 Deliverables

• Full Laravel source code
• Admin dashboard for billing operations
• Client portal for invoice payments
• PDF templates for invoices & quotes
• Documentation & environment setup guide

📱 Supported Platforms

• Web Browsers: Chrome, Firefox, Safari, Edge
• Server OS: Linux recommended; Windows supported
• Responsive Design: Accessible on all devices

🧠 Notes

• License: This release is a GPL redistribution.
• Security: Enable HTTPS, secure payment credentials and enforce role permissions.
• Scalability: Use queues + Redis for high-volume billing.
• Compliance: Check tax/legal obligations in your jurisdiction.

👨‍💻 Original Developer Credit

Full recognition to the original developer and listing on
CodeCanyon.
No affiliation or endorsement is claimed.

🔒 GPL Disclaimer

This product is distributed under the GNU GPL license, allowing modification, redistribution, and commercial usage under GPL terms.
Always test production payment workflows before going live.