Everything you need to bill clients in India

Make GST invoices and estimates, get paid by UPI, keep your GST records straight, and do it all from your phone if you like.

GST invoices in about a minute

Pick a client, add items, and the tax works itself out: CGST and SGST in your state, IGST for others, UTGST where it applies. The PDF you see while typing is exactly what your client gets.

  • GST, flat tax or no tax
  • Your GSTIN and your client’s, checked as you type
  • HSN/SAC, units and discounts per item
  • Your own numbering, duplicates blocked
  • Amount in words in lakhs and crores
Invoice editor with live preview

Estimates your clients accept online

Send a quote as a link. Your client accepts or declines from their phone, you get an email, and one click turns it into an invoice with nothing retyped.

  • Accept or decline online, with a note
  • Validity date on every estimate
  • Convert to invoice in one click
  • Duplicate last month’s invoice
Invoice detail with send, share and payment actions

Get paid by UPI, from WhatsApp

Every invoice carries a UPI QR for the exact balance. Share on WhatsApp in one tap or email the PDF from your business name. Money goes straight to your bank; we never touch it.

  • UPI QR and “Pay with UPI app” button
  • WhatsApp message with a view-and-pay link
  • Email with the PDF attached
  • See when your client opened it
  • Part payments, reminders and overdue flags
Client paying an invoice by UPI on a phone

Reports your accountant will thank you for

Sales by month, client and item; a B2B/B2C GST summary with CGST, SGST and IGST for any period; and an ageing report of who owes you and for how long.

  • GST summary for GSTR-1 preparation
  • Financial-year, quarter and month presets
  • Unpaid ageing in 30-day buckets
  • Export to CSV
GST summary report

12 designs, including the Tally format

Classic and Simple on every plan; five Modern and five Bold styles on paid plans, including the boxed Tally format with an HSN-wise tax summary. Your colour, your logo, your signature.

  • Tally-style GST format
  • Your brand colour and logo
  • Signature and authorised signatory
  • Paid / void watermark
See all designs
Invoice design picker

Your team, your rules

Invite staff to create and send invoices and record payments. Only you see billing and business settings, and every login can be protected with 2-step verification.

  • Owner and staff roles
  • Switch a user off in one click
  • 2-step login for every account
  • Sign out of all devices
Client list with amounts billed and owed

Works on your phone, installs like an app

Fliss Invoice runs in any phone browser. Open it in Chrome or Safari and choose “Add to Home Screen” to get an app icon. Your clients need nothing at all: invoices open in WhatsApp’s browser.

  • Make, send and track invoices on the go
  • Show the UPI QR to be paid on the spot
  • Same account on phone and computer
Dashboard on a phone
Invoice preview on a phone

How it compares

FeatureFliss InvoiceGlobal invoice appsExcel / Word templates
GST tax invoice with CGST, SGST or IGST worked out for you
GSTIN checked as you type, state picked from the number
HSN / SAC code and GST slab saved with each item
UPI QR for the exact amount on every invoice
Tally-style boxed GST format, plus 11 other designs
Share on WhatsApp in one tap
Amount in words in lakhs and crores
Know when your client opened the invoice
GST summary (B2B / B2C) for your CA
Free plan, paid plans priced in rupees
Works in any phone browser, nothing to install

means partly, as a paid add-on, or only in some apps. “Global invoice apps” are invoicing apps built mainly for the US and Europe.