Business & Freelance — Free Online Tools

Invoices, quotes, rates and billing utilities for freelancers and SMBs.

3 free tools — all running privately in your browser

E-Way Bill Validator

Validate e-way bill number format or JSON snippet — 12-digit rules and mandatory field checklist, no GSTN API.

Open tool

GST Late Fee Calculator

Calculate GSTR-1, GSTR-3B or GSTR-9 late filing fee and interest — nil vs regular return, updateable rules.

Open tool

Proforma Invoice Generator

Create GST proforma invoice PDF — seller/buyer GSTIN, HSN line items, INR/USD, IGST or CGST/SGST split.

Open tool