Smart Billing Software

Smart Billing Software — Professional GST Documents for Indian Businesses

GST-Ready · Made for India

Professional billing,
built for India.

Generate GST-compliant invoices, quotations, contracts & receipts in seconds. Trusted by freelancers, SMBs, and growing businesses across India.

Document Types

GST

Compliant

Free

PDF Export

₹

Indian Rupees

invoice-2026-001.pdf

TAX INVOICE

Your Business Name

by Techie Lava · GST: 33EHFPS7773J1ZO

Web Design — 5 Pages₹18,000

Mobile Optimization₹6,000

SEO Setup₹4,000

GST @ 18%₹5,040

Total Due₹33,040

GSTIN: 33EHFPS7773J1ZO · UDYAM: UDYAM-TN-11-0032526

✅100% GST Compliant

🔒No Login Required

⚡Instant PDF Export

🇮🇳Built for Indian Businesses

🆓Free to Use

Document Builder

Create your document

Fill in your details and watch your professional, print-ready document update in real time.

Invoice Details Live Preview

invoice-001.pdf

Why Smart Billing

Everything Indian businesses need

🇮🇳

GST-Compliant

CGST, SGST, IGST breakup, GSTIN validation fields, HSN/SAC codes — ready for your CA and GST filing.

⚡

Instant Documents

Fill details and your professional document is ready in seconds. Export to PDF with one click, no signup.

₹

Indian Rupee ₹

Built natively for INR. No currency conversion issues. All totals in Indian number format — lakhs & crores.

🔒

Your Data, Your Device

All documents are generated entirely in your browser. No data is sent to any server. 100% private.

🧮

Auto Calculations

Qty × Rate, GST %, discount, subtotal, and grand total all computed automatically as you type.

📱

Mobile Friendly

Works on any device — desktop, tablet, or phone. Create and share invoices on the go from anywhere.

Ready-Made Templates

8 professional templates

Click any template to instantly load a sample — customise and export in seconds.

Invoice

GST Tax Invoice

GST InvoiceUse →

Quote

Business Quotation

QuotationUse →

Receipt

Payment Receipt

ReceiptUse →

Contract

Service Contract

ContractUse →

Purchase Order

Purchase OrderUse →

Delivery Note

Delivery NoteUse →

Credit Note

Credit NoteUse →

Proforma Invoice

Proforma InvoiceUse →

`); w.document.close(); setTimeout(()=>{w.focus();w.print();},700); showToast('📄 Opening PDF print dialog…'); // Show feedback after printing setTimeout(()=>{if(!sessionStorage.getItem('fb_shown')){sessionStorage.setItem('fb_shown','1');openFeedback()}},4000); }// ── UTILITIES ────────────────────────────────────────────────────── function clearForm(){ document.querySelectorAll('.fg-input,.fg-textarea,.fg-select').forEach(el=>{if(el.type!=='date')el.value=''}); lineItems=[{desc:'',qty:1,rate:0}]; if(document.getElementById('liWrap')) renderLines(); generateDoc(); showToast('Form cleared'); } function showToast(msg){ const t=document.getElementById('toast'); t.textContent=msg; t.classList.add('show'); clearTimeout(t._t); t._t=setTimeout(()=>t.classList.remove('show'),3000); } function scrollTo(id){document.getElementById(id)?.scrollIntoView({behavior:'smooth',block:'start'})}// ── INIT ─────────────────────────────────────────────────────────── // Use addEventListener instead of window.onload to avoid conflicts window.addEventListener('load', () => {// Check if the function actually exists in the global scope if (typeof setDoc === "function") { try { setDoc('invoice'); } catch (e) { console.error("Error inside setDoc function:", e); } }setTimeout(() => { const d = document.getElementById('f_date'); const dd = document.getElementById('f_due');if (d) { d.value = (typeof TODAY !== 'undefined') ? TODAY : "Missing TODAY var"; }if (typeof generateDoc === "function") { generateDoc(); } }, 80); });