FREE Budget Tracker App with Google Sheets & React 18 | Complete Tutorial 2026 | E22

A budget and financial tracking system for a working business rather than a household: expenses, sales and projects in one place, with GST calculated rather than remembered. It runs on Google Sheets with a React 18 front-end, so there is nothing to host and nothing to subscribe to.

What it does

Expenses and sales are recorded and filtered from the dashboard, and projects are tracked so spending can be attributed to the job that caused it — which is the difference between knowing what you spent and knowing which work made money. GST is calculated automatically on the entries that carry it. Multiple users are supported with admin and user roles, filters are available across all three record types, and anything on screen exports to CSV or PDF or prints. Dates are stored in ISO 8601 format, so sorting and filtering behave correctly instead of breaking on regional formats.

Highlights

• Expense, sales and project tracking together
• Automatic GST calculation
• Admin and user roles
• Advanced filters across every record type
• Real-time refresh
• Export to CSV and PDF, or print

Who it is for

Small businesses, agencies, contractors and freelancers who invoice with GST and want expenses tied to projects. For personal and household budgeting with currency conversion and shared debts, the personal finance tracker in this catalog is the closer fit.