What Is Midday?

Midday is an AI-powered financial operations product for freelancers and small businesses that combines bank sync, invoicing, time tracking, receipt capture, and accounting workflows in one system. This explainer shows what Midday does, how the product is structured, and how its engineering choices support a finance-heavy user experience.

Midday at a Glance

Midday is an AI-powered business assistant that centralizes the financial operations of freelancers, contractors, consultants, and solo entrepreneurs. It's a monorepo containing 5 applications and 27 shared packages that together deliver bank connectivity (20,000+ institutions), invoicing, time tracking, receipt management, accounting sync, and an AI financial assistant.

The Product at a Glance

Core Concepts

Midday organizes around a Team (the billing/tenancy unit) containing members, bank accounts, and all financial data:

Team (your business entity)
  ├── Bank Accounts          (connected via Plaid / GoCardless / Teller)
  │     └── Transactions     (auto-imported, categorized, enriched)
  │           ├── Tags        (custom labels)
  │           ├── Attachments  (receipts, files)
  │           └── Categories   (auto-classified by AI)
  ├── Invoices               (create, send, track payments via Stripe)
  │     ├── Products          (line items)
  │     ├── Recurring         (scheduled re-send)
  │     └── Comments          (team collaboration)
  ├── Customers              (client directory, portal access)
  ├── Tracker Projects       (time tracking)
  │     └── Tracker Entries   (time logs per project)
  ├── Inbox                  (email receipts from Gmail / Outlook)
  ├── Documents (Vault)      (contracts, agreements)
  ├── Insights               (AI-generated financial analysis)
  └── Reports                (expense reports, custom exports)

The Tech Stack — Why Each Piece Exists

Key Statistics

Core Features

Financial Operations

• Bank Connections — Connect to 20,000+ banks; transactions auto-imported and enriched
• Transaction Management — Auto-categorized by AI, tagging, attachments, bulk actions
• Invoicing — Create/send invoices, Stripe payments, recurring schedules, customer portal
• Time Tracking — Project-based timer and manual entries, billable hours
• Magic Inbox — Gmail/Outlook sync; AI matches receipts to transactions
• Vault — Secure document storage (contracts, agreements)
• Reports — Expense reports, CSV export for accountants
• Accounting Sync — Two-way sync with Xero, QuickBooks, Fortnox

AI-Powered

• Financial Assistant — Chat with your finances: ask about spending, burn rate, runway, forecasts
• Transaction Categorization — AI classifies transactions using embeddings
• Receipt Matching — AI matches inbox documents to transactions
• Document Processing — Extract data from PDFs and images
• MCP Integration — Use Midday as a tool in Claude, Cursor, and ChatGPT

Platform

• Customer Management — Client directory with enrichment (Exa) and portal access
• App Store — Integrations: Slack, WhatsApp, Xero, QuickBooks, Fortnox
• Desktop App — Tauri-based native app (macOS)
• Notifications — Email notifications with granular settings
• OAuth/API — OAuth applications, API keys for programmatic access

What Makes Midday Different

1. AI-native financial assistant — Not a bolt-on; AI is core to categorization, matching, and insights
2. Multi-provider banking — 20,000+ institutions across US, EU, UK, Canada
3. Open-source — Full source code, self-hostable (AGPL-3.0)
4. All-in-one — Bank sync + invoicing + time tracking + accounting in a single tool
5. Modern stack — Next.js 16, React 19, Bun, tRPC, Drizzle — bleeding-edge TypeScript

What's Next

Resources

• Website
• GitHub Repository
• Discord Community