Multi-Tenant Financial Operations Platform

Tally ERP-inspired double-entry accounting engine

Node.jsExpressTypeScriptVue.jsMongoDB

The Problem

Small and medium businesses in India need accounting software that understands Indian GST regulations, supports multiple organizations, and provides real-time financial statements — without the complexity and cost of enterprise ERP systems.

The Approach

Designed a Tally ERP-inspired architecture with strict double-entry bookkeeping rules enforced at the database level. Used MongoDB aggregation pipelines for real-time financial report generation and Vue.js for a responsive, keyboard-navigable interface that mirrors Tally's efficiency.

Architecture

Express.js API with TypeScript for type-safe accounting logic

MongoDB with transaction support for atomic double-entry operations

Vue.js frontend with keyboard-first navigation

Multi-tenant architecture with organization-level data isolation

Aggregation pipelines for real-time Balance Sheet and P&L generation

Period locking mechanism to prevent retroactive modifications

Key Features

8+ Voucher Types

Sales, purchase, payment, receipt, journal, contra, credit note, and debit note — each with type-specific validation rules and GST calculations.

Indian GST Engine

Automatic CGST/SGST/IGST calculation based on transaction geography, with HSN code support and GST return data preparation.

Real-time Financial Statements

Balance Sheet and P&L generated on-demand via MongoDB aggregation pipelines, with drill-down capability from summary to individual transactions.

Hierarchical Ledger Groups

Customizable chart of accounts with nested groups, supporting unlimited depth and automatic balance rollup through the hierarchy.

Outcomes

Voucher Types

Multi-tenant

Organizations

Real-time

Report Generation

Full

GST Compliance

Next Project

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