Business Operations
Build an Expense Management System with AI - in Hours
ProjectCode generates a complete, production-ready Expense Management System from a single natural language prompt. In hours instead of months, you get a React frontend, NestJS REST API, PostgreSQL database, and authentication - fully integrated, live-previewed, and deployed to a URL you own.
Estimated build time: 2–4 hours
Free to start · No credit card required
01 · The Challenge
Why building an Expense Management from scratch is hard
Building an Expense Management System from scratch requires months of development time and significant engineering resources. Teams struggle to coordinate frontend, backend, database, and authentication while managing expense management-specific business logic, integrations, and role-based access rules.
02 · What's Included
Everything your Expense Management needs
ProjectCode generates a production-ready Expense Management with all the modules your team needs from day one.
03 · Architecture
How it's built
The generated Expense Management follows production-grade architecture patterns.
React 18 + TypeScript frontend with role-based dashboards tailored for expense management workflows
NestJS REST API with dedicated expense management modules, DTOs, validators, and service layer
PostgreSQL relational schema with normalized tables for all expense management entities
JWT + Google OAuth authentication with granular permission gates per role
Real-time Socket.IO events for live expense management status updates and notifications
Managed hosting with one-click deploy, custom domain, and auto-SSL
PostgreSQL schema designed for Expense Management
ProjectCode generates a normalized, indexed PostgreSQL schema with the right tables and relationships for your use case. You own the schema and can evolve it freely.
- expense_reports (id, employee_id, period, status, total, submitted_at, approved_by, notes)
- expenses (id, report_id, date, amount, currency, category, merchant, receipt_url, policy_status, description)
- approval_workflows (id, workspace_id, rules jsonb, approver_levels jsonb, budget_thresholds jsonb)
- budgets (id, department_id, category, period, allocated, spent, committed)
-- Generated by ProjectCode -- Expense Management System schema CREATE TABLE expense_reports__id ( id UUID PRIMARY KEY DEFAULT gen_random_uuid(), created_at TIMESTAMPTZ DEFAULT NOW(), updated_at TIMESTAMPTZ DEFAULT NOW() -- ... auto-generated columns ); CREATE TABLE expenses__id ( id UUID PRIMARY KEY DEFAULT gen_random_uuid(), created_at TIMESTAMPTZ DEFAULT NOW(), updated_at TIMESTAMPTZ DEFAULT NOW() -- ... auto-generated columns ); CREATE TABLE approval_workflows__id ( id UUID PRIMARY KEY DEFAULT gen_random_uuid(), created_at TIMESTAMPTZ DEFAULT NOW(), updated_at TIMESTAMPTZ DEFAULT NOW() -- ... auto-generated columns ); CREATE TABLE budgets__id ( id UUID PRIMARY KEY DEFAULT gen_random_uuid(), created_at TIMESTAMPTZ DEFAULT NOW(), updated_at TIMESTAMPTZ DEFAULT NOW() -- ... auto-generated columns );
05 · Tech Stack
Production-ready from day one
Every generated app uses a battle-tested stack you can deploy anywhere and own completely.
React 18 + TypeScript + Tailwind CSS
NestJS 10 + Node.js + TypeScript
PostgreSQL (managed or Supabase)
Email OTP · Google OAuth · GitHub OAuth
Managed hosting · Custom domain · Auto-SSL
Claude Sonnet · Claude Opus · Kimi
06 · Try It Now
Example prompt to get started
Copy this prompt into ProjectCode and get a working app in minutes.
Build an expense management system for a company with 300 employees and 10 cost centers. Include mobile receipt upload with OCR, configurable approval workflows (under $200 auto-approve, $200–$1000 manager, above manager + finance), per diem tracking, corporate card transaction import, expense report PDF generation, and a finance dashboard with spend by category, department, and month versus budget.
07 · Deployment
Deploy your Expense Management anywhere
Managed hosting
One-click deploy to a live URL managed by ProjectCode.
Custom domain
Connect your own domain with auto-provisioned SSL via Cloudflare.
GitHub export
Push to your GitHub repo and self-host or deploy via Vercel, Railway, or AWS.
Docker ready
Export a Dockerfile and docker-compose for any containerized environment.
08 · Pricing
Start free, scale as you grow
No per-seat fees. No vendor lock-in. Token-based pricing that scales with your usage.
$0
Start building your first app. Live preview, managed hosting, and full code export included.
From $5
Purchase token packs that roll over every month. Build more, pay only for what you use.
Custom
Custom models, SLA, SSO, and private cloud deployment for large teams.
09 · FAQ
Common questions about building an Expense Management
Yes. The OCR module reads merchant name, date, and amount from uploaded receipts. Employees review and confirm before submitting. This is powered by Google Vision or AWS Textract (configurable in your prompt).
10 · Related
More apps you can build
Build your Expense Management in hours, not months
Start free. No credit card. Your first app is live in minutes.
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