# ContaTaxPay.com - Enterprise SaaS Platform for Tax Accounting & Business Management
  
  ## Project Overview
  ContaTaxPay is an **enterprise-grade SaaS platform** that simplifies tax accounting and business management for companies in **Germany, Romania, and Moldova**. It connects businesses with accountants through a full-featured suite of tools including tax declaration (ELSTER integration), payroll, invoice management, CRM, real-time chat, and automated compliance tracking.
  
  Designed to handle the complexities of European tax systems, the platform streamlines workflows for both clients and accountants while maintaining the highest standards of **data security** and **regulatory compliance**.
  
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  ## Key Features
  
  ### 🏢 Multi-Tenant Business Management
  - Create and manage multiple companies with country-specific tax rules  
  - Role-based access control for clients, accountants, and admins  
  - Seamless accountant-client membership system  
  - Multi-language support (German, Romanian, Moldovan)  
  
  ### 💼 Tax Declaration & ELSTER Integration
  - Automated VAT, income-expenditure statements, and trade tax declarations  
  - Direct integration with Germany’s ERiC library for compliant submissions  
  - Automatic ELSTER-compliant XML generation  
  - Real-time submission tracking with confirmations  
  
  ### 📊 Financial Management & Reporting
  - BWA (business evaluation) reports and dashboard analytics  
  - Invoice management with automatic numbering and OCR extraction  
  - Cash book and expense tracking with reconciliation tools  
  
  ### 💳 Advanced Payment System
  - Multi-method support (SEPA, IBAN, PayPal, Klarna, cards)  
  - Automated invoice generation and payment status tracking  
  - Multi-currency support and recurring subscription automation  
  
  ### 👥 CRM System
  - Task management, document tracking, and event logging  
  - Personalized client dashboards and accountant overviews  
  - Automated task creation based on accounting deadlines  
  
  ### 💬 Real-Time Communication
  - Socket.io-based instant messaging and file sharing  
  - Message read receipts and persistent chat history  
  - Real-time notifications for tasks and deadlines  
  
  ### 👨‍💼 Payroll Management
  - Employee database and automated payslip generation  
  - Social insurance and salary tax calculations  
  - Payroll reporting for compliance  
  
  ### 📁 Document & File Management
  - AWS S3 secure storage with presigned URLs  
  - Drag-and-drop uploads, categorization, versioning, OCR processing  
  
  ### 🔐 Security & Authentication
  - JWT-based authentication with optional 2FA  
  - Role-based permissions and session management  
  - Encrypted data storage and transmission  
  
  ### 🤖 AI-Powered Assistant
  - OpenAI integration for tax/accounting assistance  
  - Context-aware multi-language responses  
  
  ### 🔄 Automation & Scheduled Tasks
  - Node-Cron jobs for recurring tasks  
  - Automated CRM task generation and data cleanup  
  - Regular database backups and versioning  
  
  ---
  
  ## Technical Stack
  
  **Frontend**: Next.js, React, TypeScript, Tailwind CSS, Radix UI, Socket.io client, Recharts, React Hook Form + Zod, PDF.js/jsPDF  
  **Backend**: Node.js, Express.js, PostgreSQL, Prisma ORM, Socket.io server, AWS S3/SES, Passport.js + JWT, Node-Cron  
  **DevOps**: Vercel deployment, VPS with PM2, GitHub Actions CI/CD, Prisma migrations, logging with Winston  
  **Tax Integration**: ERiC library, XML generation, Cheerio for HTML parsing, Tesseract.js OCR  
  
  ---
  
  ## Business Impact
  - ✅ Simplified tax compliance and ELSTER submissions  
  - ✅ 80% time reduction for bookkeeping and reporting  
  - ✅ Real-time visibility of finances, tasks, and deadlines  
  - ✅ Streamlined accountant-client communication  
  - ✅ Scalable multi-tenant SaaS platform supporting 1000+ users  
  - ✅ GDPR-compliant, secure, and reliable  
  
  ---
  
  

ContaTaxPay.com

Next.js

React

Node.js

Express.js

PostgreSQL

Prisma ORM

TypeScript

AWS S3

Socket.io

Tailwind CSS

ContaTaxPay.com

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