dubbl

Open source, double-entry bookkeeping for modern teams.

dubbl is a full-featured, open-source alternative to Xero and QuickBooks. It is API-first, developer-friendly, and built for teams that want full control over their financial data.

Features

• Double-entry bookkeeping - Chart of accounts, journal entries, bank reconciliation
• Invoicing and quotes - PDF generation, payment tracking, recurring invoices, credit notes
• Bills and purchase orders - Accounts payable, purchase requisitions, landed costs
• Banking - CSV import, bank reconciliation, scheduled transactions
• Expense management - Claims, receipt OCR, approval workflows, recurring expenses
• Inventory - Warehouses, stock takes, assembly/BOM, serial and lot tracking, valuation
• Payroll - Employees, contractors, pay runs, tax forms, timesheets, leave management
• Projects - Time tracking, milestones, tasks, billable hours
• CRM - Pipeline management, deals, analytics
• Fixed assets - Depreciation schedules, disposal tracking
• Budgets - Budget creation, variance analysis, budget vs actual
• Tax - Multi-jurisdiction tax rates, VAT returns, BAS, Schedule C, sales tax
• 25+ financial reports - P&L, balance sheet, cash flow, aged receivables, and more
• Multi-currency - Exchange rates, currency conversion
• Documents - File management and storage
• Audit trail - Full audit log for compliance
• API-first - Complete REST API with API key management
• MCP Server - Connect any AI coding agent via Model Context Protocol (OAuth 2.1)

Quick Start

Prerequisites

• Node.js 20+
• PostgreSQL 15+ (or use Docker)
• S3-compatible storage (optional, for file uploads)

Installation

# Clone the repository
git clone https://github.com/dubbl-org/dubbl.git
cd dubbl

# Install dependencies
pnpm install

# Set up environment variables
cp .env.example .env

Edit .env with your configuration:

# Database
DATABASE_URL=postgresql://user:password@localhost:5432/dubbl

# Auth
AUTH_SECRET=your-random-secret-here
AUTH_URL=http://localhost:3000

# Stripe (optional)
STRIPE_SECRET_KEY=sk_test_...
STRIPE_WEBHOOK_SECRET=whsec_...

# S3 Storage (optional)
S3_BUCKET=dubbl-uploads
S3_REGION=us-east-1
S3_ACCESS_KEY_ID=...
S3_SECRET_ACCESS_KEY=...
S3_ENDPOINT=https://s3.amazonaws.com

Database Setup

# Push schema to database
pnpm db:push

# Seed with demo data (optional)
pnpm db:seed

Run

pnpm dev

Open http://localhost:3000 in your browser.

If you ran the seed script, log in with [email protected] / password123.

Tech Stack

• Framework - Next.js (App Router)
• Database - PostgreSQL with Drizzle ORM
• Auth - NextAuth.js
• UI - Tailwind CSS + shadcn/ui
• Docs - Fumadocs

Self-Hosting

See the Self-Hosting Guide for instructions on deploying dubbl with Docker.

MCP Server

dubbl includes a built-in Model Context Protocol server that lets any MCP-compatible AI agent interact with your accounting data. The MCP server uses Streamable HTTP transport with OAuth 2.1 authentication and is available on all plans.

Works with Claude Desktop, Claude Code, Cursor, Windsurf, VS Code Copilot, and any other MCP-enabled agent. Just point your client at:

https://dubbl.dev/api/mcp

See the MCP documentation for setup instructions for each client.

Documentation

Full documentation is available at dubbl.dev/docs or by running the app locally and visiting /docs.

Contributing

We welcome contributions of all kinds: bug fixes, features, documentation, and tax regulation updates.

• Open an issue to report bugs or request features
• Submit a pull request with your changes
• Help keep tax information accurate by reporting outdated rules
• See the Contributing Guide for details

License

Licensed under the Apache License 2.0.