Professional GST Invoice Generator
Create GST invoices with 8 templates, custom watermark, auto tax, discount, logo, signature and history.
Is this invoice generator really free?
Yes. 100% free — no signup, no hidden limits. To keep it free, the watermark is enabled by default. You can remove it anytime by watching 2 short video ads.
How do I remove the watermark?
Click the "Remove Watermark" button in the toolbar. A video ad will play (approximately 15 seconds). After watching 2 ads, the watermark is permanently removed on your device — no more ads, no more watermark, forever.
Is the removal permanent?
Yes. Once you have watched 2 ads, the watermark stays removed on your device permanently. We save this locally so you never need to watch again.
What is CGST, SGST, and IGST?
CGST + SGST apply when seller and buyer are in the same state (each half). IGST applies when different states (full rate). Auto-detected based on states, but you can override.
Can I manually change the GST rate per item?
Yes. Every row has its own GST % field. Set 0%, 5%, 12%, 18%, 28%, or any custom value.
How do I add a discount?
Open Edit form → "Discount & Charges". Choose Percentage (%) or Fixed Amount.
Can I upload logo, signature, and stamp?
Yes, all optional. Use PNG with transparent backgrounds for best results.
Is my invoice data sent to your servers?
No. Everything runs in your browser. Nothing is uploaded anywhere.
Where is my invoice history saved?
In browser localStorage. Persists across refreshes on same device.
Can I edit a saved invoice?
Yes. History tab → click "Edit". Loads with all fields pre-filled.
Does it support multiple currencies?
Yes — INR, USD, EUR, GBP, AED.
How do I save the invoice as PDF?
Click "PDF" button. Browser print dialog opens. Choose "Save as PDF".
Comprehensive Engineering Guide: GST Invoicing, Compliance, & Tax Calculation (2026)
In the contemporary economic landscape, billing is not merely an operational formality; it represents the formal legal foundation of commercial trade. For commercial establishments, independent freelancers, small-to-medium enterprises (SMEs), and contractors operating within India, issuing a valid, Goods and Services Tax (GST) compliant tax invoice is an unyielding statutory obligation. A standardized invoice serves as documented evidence of supply, substantiates input tax credit (ITC) claims, establishes actionable legal contracts, and forms the basis for national statutory audits.
However, traditional ERP platforms and accounting software suites often impose exorbitant recurring subscriptions, steep onboarding hurdles, and cumbersome interfaces. Conversely, static spreadsheet templates lack automated validation, leading to calculation discrepancies, inverted tax calculations, and non-compliant invoicing structures. The DocEasy GST Invoice Generator bridges this divide by delivering a free, decentralized, in-browser billing workstation equipped with 8 corporate aesthetic templates, automatic tax calculations, and instant PDF rendering.
Step-by-Step Tutorial: Creating a Compliant GST Invoice Online
- Define Company Profile: Click the Edit button on the toolbar. Input your registered trade name, physical billing address, GSTIN, and PAN details. Optionally attach an official company logo.
- Specify Recipient (Bill To): Input the client or customer name, billing address, and buyer GSTIN (crucial for B2B transactions). Enter the Place of Supply to anchor statutory tax jurisdictions.
- Add Inventory Line Items: Enter specific item or service descriptions, mandatory HSN or SAC classification codes, unit quantities, rates, and individual GST percentages (0%, 5%, 12%, 18%, or 28%).
- Configure Commercial Deductions & Shipping: Apply discounts across the entire subtotal as either a percentage or flat cash adjustment, and specify post-tax logistics or delivery charges.
- Incorporate Banking & Signatures: Enter bank account coordinates, IFSC codes, and UPI identifiers for payment settlement. Attach a digital signature and company seal PNG.
- Preview & Export PDF: Choose from 8 corporate visual themes, review the live layout, and click PDF to download a print-ready document.
1. Statutory Tax Anatomy: Decoding CGST, SGST, IGST, and UTGST
Under the Indian Goods and Services Tax framework, tax jurisdiction is determined strictly by the physical relationship between the Location of the Supplier and the Place of Supply:
| Transaction Classification | Geographic Relationship | Applicable Tax Levy | Revenue Allocation |
|---|---|---|---|
| Intra-State Supply | Supplier State == Place of Supply | CGST + SGST | Divided equally: 50% to Central Government, 50% to State Government. |
| Inter-State Supply | Supplier State != Place of Supply | IGST | 100% collected by Central Government and apportioned to destination State. |
| Union Territory Supply | Inside a UT without a Legislature | CGST + UTGST | 50% to Central Government, 50% to Union Territory administration. |
The DocEasy engine evaluates your supplier state against the recipient's billing coordinates and designated Place of Supply in real time. If both parties reside in Delhi, an 18% levy is automatically apportioned into 9% CGST and 9% SGST. If the invoice crosses state borders to Maharashtra, the entire 18% accumulates under IGST.
2. Mandatory Statutory Fields for B2B Invoices Under Section 31
According to Section 31 of the Central Goods and Services Tax Act read alongside Rule 46 of the CGST Rules, every valid tax invoice issued to a registered business must contain the following structural fields:
- Consecutive Sequential Numbering: Must contain only alphabets, numerals, or special characters (hyphens and slashes), unique for each financial year.
- Date of Issuance: Documenting the exact date the invoice is raised.
- Supplier Identification: Name, registered operational address, and valid 15-digit GSTIN.
- Recipient Identification: Name, address, and GSTIN (or UIN) of the recipient.
- HSN / SAC Code: Harmonized System of Nomenclature code for physical goods, or Services Accounting Code for professional services.
- Place of Supply: Accompanied by the two-digit State Code (e.g., Delhi: 07, Maharashtra: 27, Karnataka: 29).
- Taxable Value & Surcharges: Clear itemization showing unit rates, applicable discounts, and distinct tax rate tiers.
- Signature or Digital Seal: Authorized signatory signature or clear electronic attribution.
3. HSN and SAC Code Regulations (2026 Thresholds)
To avoid invoice rejection during statutory reconciliation, businesses must adhere to national HSN/SAC reporting standards based on Aggregate Annual Turnover (AATO):
- Turnover up to ₹5 Crore (B2B): Minimum 4-digit HSN code mandatory.
- Turnover exceeding ₹5 Crore: Mandatory 6-digit HSN code across all B2B and B2C commercial invoices.
- Import & Export Transactions: Full 8-digit HSN classification mandatory.
- Service Sector Providers: Standard 6-digit SAC codes (e.g., 998314 for IT and software design services).
4. Overview of the 8 Corporate Invoice Templates
| Template Style | Color Palette | Design Characteristics | Recommended Industry Sector |
|---|---|---|---|
| ITC Style | Corporate Royal Blue | Structured borders, clear grid metadata, high contrast. | Manufacturing, corporate consulting, traditional B2B trade. |
| BigBazaar | Warm Retail Orange | Bold itemization, clear quantity columns, dynamic totals. | Retail commerce, FMCG distributors, wholesale trading. |
| Tech Style | Clean Minimal Blue | Subtle borders, clean typography, open whitespace. | SaaS startups, software engineering, digital agencies. |
| Gradient Style | Instagram Vibrant Pink/Purple | Modern gradient headers, eye-catching visual accents. | Creative studios, influencer agencies, fashion houses. |
| HMCG Style | Deep Classic Navy | Dense layout, compact spacing for long inventory rosters. | Logistics, supply chain vendors, pharmaceutical trade. |
| Enterprise | Cobalt Industrial Blue | Prominent banking credentials, explicit terms & conditions. | Engineering contractors, legal retainers, financial audits. |
| Dark Style | Charcoal & Slate Black | Modern contrast header, commanding formal presence. | Architecture firms, luxury services, boutique brands. |
| Auto Style | Steel Slate Blue | Engineered layout, clear HSN breakdowns, robust footers. | Automotive repair, heavy equipment leasing, hardware supply. |
5. Watermark Removal Protocol
DocEasy invoices feature a subtle, translucent watermark across document previews by default. To maintain our completely free, serverless platform without charging user subscriptions or licensing fees, we operate an ethical unlock protocol:
- Clicking the Remove Watermark button launches a short 15-second sponsor video stream.
- Viewing two consecutive sponsor clips permanently removes the watermark across your personal device browser session.
- Your unlock status is stored inside your browser's private local storage, meaning you will never be prompted for watermark fees or recurring ad views on that device.
6. Security & Privacy: Why Client-Side Processing Protects Your Business
Typical cloud-based billing platforms require uploading your proprietary accounting data to centralized server farms. This introduces significant commercial vulnerabilities:
- Commercial Surveillance: Third-party cloud providers may analyze transaction volumes, item pricing, and customer identities for market analytics.
- Regulatory Liability: Leaking customer financial data, PAN records, and banking coordinates through insecure cloud databases creates severe legal liabilities.
- Data Lock-In: Many commercial billing tools trap historical customer lists behind subscription renewals or data export fees.
The DocEasy Client-Side Architecture: All data entry, tax calculations, number-to-words conversions, and PDF print formatting execute entirely inside your local device's memory thread. Your client rosters, banking credentials, item prices, and transaction records never travel across the internet. You can independently verify this architecture by disconnecting from Wi-Fi once the page has loaded: the tool remains fully functional offline.
7. Frequently Asked Questions (FAQ)
Q1: How do I export my invoice as an official PDF file?
Click the PDF button on the top toolbar or press Ctrl+P (Cmd+P on Mac). The browser's native print interface will open. Select "Save as PDF" as your destination, verify that Paper Size is set to A4, ensure "Background Graphics" is checked, and click Save.
Q2: Does DocEasy store a backup of my invoices if I clear my browser history?
Because DocEasy operates with 100% client-side privacy, your saved invoice records are stored exclusively in your browser's local storage (localStorage). If you manually wipe your browser cookies and site storage, that history will be removed. We recommend saving finished invoices as PDF files to your local drive for permanent accounting archives.
Q3: How does the automatic Number-to-Words currency conversion work?
Our engine incorporates a standardized currency translation algorithm that computes integer and fractional figures into Indian numbering terms (Lakhs and Crores for INR) or international terms (Millions and Billions for USD/EUR), automatically outputting compliant textual totals (e.g., "Twenty-Five Thousand Four Hundred Rupees Only").
Q4: Can I issue invoices in foreign currencies like USD, EUR, or AED?
Yes. Select your preferred currency from the Edit form dropdown. The tool automatically adapts currency symbols and textual conversions across the document layout.
Q5: What is the purpose of the 'Computer Generated Invoice' disclaimer?
Under modern commercial law and IT Act provisions, digitally transmitted invoices that carry an explicit note stating "This is a computer-generated invoice and does not require a physical signature" are legally valid for commercial trade and audit reconciliation.
Q6: What image formats should I use for company logos and signatures?
We recommend using transparent PNG files. Transparent backgrounds blend seamlessly into all 8 template color schemes without leaving awkward white border boxes around your logo or signature.
Q7: Can I apply custom GST rates to different line items on the same invoice?
Yes. Each row in the item table features an independent GST percentage field. You can combine 0% exempted items, 5% essential goods, and 18% professional services within a single invoice.
Q8: How does the Round-Off toggle function?
When set to "Auto", the calculator automatically rounds fractional decimal totals to the nearest whole rupee, adjusting the difference under a designated "Round Off" line item.
Q9: Can I use this generator for non-GST or composite dealer billing?
Yes. Simply set the Tax Mode dropdown to "No Tax" or configure item GST fields to 0%. This formats the document as a clean Bill of Supply or commercial debit note.
Q10: Is there any limit on how many line items I can add to an invoice?
There are no arbitrary software limits. You can add as many rows as needed. For multi-page documents, the browser print engine will automatically distribute items across consecutive A4 pages.
8. Recommended Multi-Tool Workflow for Business Documentation
Invoicing often interfaces with other administrative document workflows. Combine DocEasy utilities for complete operational readiness:
- Prepare Signatures & Stamps: Clean up physical paper signatures using our Signature BG Remover to create transparent PNG overlays for your invoices.
- Bundle Monthly Billing Dossiers: Merge exported invoice PDFs with payment receipts or proof-of-work documents using our PDF Merge Utility.
- Optimize Invoice File Size for Email: If emailing bulk invoices with strict attachment limits, compress files without compromising text clarity using our PDF Compressor.
- Archive and Extract Pages: Easily extract specific invoice pages from multi-page quarterly billing archives using our Split PDF Tool.
9. Conclusion
Managing commercial billing shouldn't require complex, expensive accounting suites or sacrificing your corporate data privacy to third-party cloud servers. The DocEasy Free GST Invoice Generator equips freelancers, consultants, and business owners with an instantaneous, professional, and compliant invoicing workstation directly inside their web browser. Bookmark this utility today to streamline your commercial billing workflows.