Free GST Invoice & Quotation Maker
Create sleek, professional tax invoices, estimates, and bills in seconds. Automatically calculate CGST, SGST, IGST, discounts, and print high-resolution PDFs without registration.
Document Configuration
Your Business (Biller)
Client Details (Bill To)
Line Items & Services
Tax & Discounts
Payment & Bank Instructions
What Makes a Tax Invoice Legally Compliant?
Under GST and international trade standards, an invoice is more than a request for payment—it serves as the primary legal document supporting tax credit claims (ITC) and financial audits. Whether you are a solo software engineer in Bengaluru, an agency in Mumbai, or a consultant billing global clients, every valid tax invoice must satisfy these essential criteria:
Clear mention of your legal trade name, registered business address, GSTIN (15-digit code), and PAN.
Consecutive invoice numbering (e.g. INV-2026-001) unique for every financial year, containing only letters, numbers, and hyphens.
Buyer's name, billing address, state, and their GSTIN if they are a registered enterprise claiming input tax credit.
Separate calculation for CGST (Central Tax) + SGST (State Tax) for intra-state billing, or IGST (Integrated Tax) for inter-state deliveries.
Tax Invoice vs. Proforma Invoice vs. Quotation: What's the Difference?
Many freelancers and new entrepreneurs confuse these three documents:
3 Proven Tips for Freelancers to Get Paid 2x Faster
- 1State precise due dates rather than vague terms: "Payment Due: 15 November 2026" gets paid much faster than "Due upon receipt", which clients frequently defer until the end of the month.
- 2Include multiple payment channels: Provide both your standard bank transfer details (NEFT/RTGS/IMPS with IFSC) and an instant UPI ID/QR code to eliminate transaction friction.
- 3Automate follow-up reminders: Send a polite reminder 3 days before the due date, on the due date, and 3 days post-due date. Check out our upcoming WhatsApp Payment Follow-Up Generator to craft tactful messages.
Frequently Asked Questions (FAQ)
Is this tool really 100% free with no watermarks?
Yes, GalaxyOfAI Invoice Maker is completely free. We do not insert any promotional watermarks or branding on your generated invoice PDF. You retain full ownership of your documents.
How are CGST, SGST, and IGST calculated?
If the supplier and recipient are in the same state (Intra-State), GST is split equally into 50% CGST (Central GST) and 50% SGST (State GST). For interstate transactions between different states, the entire tax is billed as IGST (Integrated GST).
How can I save or print the invoice as a PDF?
Click the blue "Print / Save as PDF" button at the top. When the browser print window opens, choose "Save as PDF" in the destination dropdown. Our CSS stylesheet automatically removes all headers, sidebar ads, and buttons, giving you a crisp, vector-sharp document.
Is my financial data stored or uploaded to your servers?
No. The tool runs completely client-side in your browser. All figures, customer names, and banking details remain private on your computer and are never sent to external servers.
Need to Follow Up with a Client?
Generate polite, professional WhatsApp and email reminders to get your invoices cleared faster without sounding pushy.