Bigcapital | Modern core accounting software | WarmIndex

Bigcapital is modern, open-source accounting and inventory software for small and medium-sized businesses, automating financial processes like invoicing, expenses, and reporting as an alternative to QuickBooks and Xero.

🚀 Overview

Bigcapital solves the challenges of outdated accounting software by providing a modern, intuitive platform that automates repetitive financial tasks such as transaction categorization, invoice reminders, and book closing. It delivers real-time financial statements, KPIs, and intelligent reports to enable faster, data-driven decisions without waiting for month-end closings.

It's built for small and medium businesses (SMBs), business owners, accountants, and bookkeepers who need efficient, collaborative tools for managing accounts receivable/payable, inventory, and multi-currency transactions.

The project was created to revolutionize core accounting with an enjoyable user experience, advanced automation, seamless integrations, and the flexibility of open-source self-hosting or convenient cloud deployment, moving beyond legacy technologies.

✨ Key Features

Sales & Purchases Invoicing: Create professional invoices, manage recurring billing, track payments from customers/vendors.
Inventory Tracking: Automatic stock adjustments on buys/sells with smart reports.
Intelligent Financial Reports: Real-time insights, KPIs, balance sheets, P&L without manual effort.
Double-Entry Accounting: Accurate bookkeeping, expense categorization, multi-currency support with live FX rates.
Collaboration Tools: Role-based permissions for accountants/bookkeepers.
Headless API: Integrate with external sales, payments, banks.
Upcoming: Enhanced bank syncs, advanced automations.

🛠 Tech Stack

Frontend: React, Vite, TypeScript, SCSS
Backend: NestJS, Node.js, TypeScript
Database: PostgreSQL (tenant databases), Elasticsearch
Auth: Custom
Hosting: Docker Compose (self-host), Custom cloud

👥 Who Is This For?

This project is useful for:

Small and medium businesses automating finances
Accountants and bookkeepers collaborating on books
Teams seeking open-source QuickBooks/Xero alternatives

📸 Screenshots / Demo

Live demo: https://bigcapital.app (start free trial)
GitHub: https://github.com/bigcapitalhq/bigcapital

🔥 Project Status

🟢 Actively building

Last updated: 2026-03-24

❓ FAQ

Is this project free?

Freemium — Fully open-source self-hosting is free (AGPL-3.0 license). Cloud version offers free trial, paid plans starting at $15/organization/month. (Briefly: Pay for hosted convenience and support.)

Is the source code available?

Yes — https://github.com/bigcapitalhq/bigcapital

Can I contribute?

Yes — Review CONTRIBUTING.md, report issues, submit pull requests on GitHub. All types of contributions (code, docs, bugs) welcome from 31+ contributors.