Invoice

Invoice & Billing Tools

Calxo’s invoice tools cover the documents Indian businesses actually issue day to day: a plain invoice, a GST tax invoice, and the templates that come before and after one. Fill in the fields, watch the preview update, download a print-ready PDF. Nothing is uploaded or stored.

What you can generate here

  • Invoice generator — a full GST or non-GST invoice with line items, tax, and totals
  • GST tax invoice — the compliant format with GSTIN, HSN/SAC codes, and CGST/SGST/IGST split

Why these are different

Most free invoice tools online push you through a sign-up wall before letting you download, or watermark the PDF unless you pay. These run entirely in your browser. Nothing you type ever leaves your device.

Invoice INV

Invoice Template for Excel: Free Editable .xlsx Download + Live Generator

Free invoice template for Excel. Download a ready-to-edit .xlsx with formulas built in, or use the live …

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Invoice INV

Invoice Generator: Free Online Invoice Maker with GST, PDF Download

Create a professional invoice online in minutes. Add line items, apply CGST/SGST or IGST, get an instant …

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Invoice GST

GST Invoice Template: Free Format with CGST/SGST, IGST & PDF/Excel Download

Free GST invoice template with GSTIN, CGST/SGST or IGST split, and HSN-ready line items. Fill in the live …

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About Calxo. Who runs this site

Calxo (calxo.in) is a free, ad-light calculator platform built for Indian users. Every tool covers EMI, SIP, GST, income tax, FD, PPF, salary, and conversions, using Indian rules, INR, and current tax slabs (not generic global formulas).

Publisher

Calxo is operated by Vignesh Sampath Kumar, an SEO Lead at PipeRocket Digital in Chennai and the founder of EVBlogs.in. Vignesh personally writes and reviews every calculator page.

Editorial standards

  • Formulas verified against RBI, Income Tax Department, CBDT, and GST Council sources
  • Updated the same week tax slabs or rules change
  • No paid placements; no affiliate links inside calculators
  • All calculations run in your browser; inputs are never stored

Contact

Corrections, suggestions, or partnership: avmedianews321@gmail.com

Based in India. Founded 2026.

Disclaimer: Calxo is a calculation tool, not financial, legal, or tax advice. For decisions that affect your money in any meaningful way, talk to a SEBI-registered financial advisor or a Chartered Accountant. We update formulas the same week laws change, but we're not liable for outcomes from calculator outputs. Read our Terms and Privacy Policy.