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HISAAB — live invoice builder demo

GST Invoicing & Books · Surat — a demo build by Codelith Lab, live and open to click through.

HISAAB demo website screenshot

Type on the left, watch a GST invoice build itself on the right — CGST and SGST flip to IGST the moment you change the buyer’s state, slabs recalculate, and three templates render live. The build runs as a 10-section page with 1,161 words of real copy and 1 images, and it holds up from desktop down to a 390px phone screen.

What this build includes

  • Type on the left. Watch the right.
  • Who owes you, and for how long.
  • GSTR-1, built from your invoices.
  • Per business. Not per user.
  • Business owner questions.
  • Raise one invoice. See if it feels right.
  • Free
  • Business
  • Books
  • It is yours, and leaving is easy

Inside the build

Type the line items. HISAAB picks CGST and SGST or IGST from the buyer's state, rounds the way the rules say, writes the amount in words, and puts the HSN in the right column. Try it below with a real invoice; nothing is saved.

Type on the left. Watch the right.

Change the buyer's state and the tax columns switch between CGST/SGST and IGST as they should. Change a slab and everything recalculates. This is the actual arithmetic, not a picture of an invoice.

Who owes you, and for how long.

Most small businesses do not have a cash-flow problem, they have a collections problem. The ageing bars are the first screen you see when you log in, and the overdue list has a chase button next to every name.

GSTR-1, built from your invoices.

You already typed the invoices. Typing them again into a return form is somebody's bad idea. This table is generated, checked against your books, and exports in the portal's own JSON format.

Per business. Not per user.

Your accountant, your partner and your staff all get logins on every plan. Charging per seat for a five-person firm is how software gets used by one person and resented by four.

Business owner questions.

Yes, from the place of supply against your own registered state. Same state gives CGST and SGST at half the slab each; different state gives IGST at the full slab. Union territories without a legislature use UTGST, which we handle too. This single rule is where most spreadsheet invoices go wrong.

Functionality built in

Booking / enquiry flow Live calculator WhatsApp CTA Scroll animation Custom SVG / canvas Mobile responsive

Build facts

Type of buildLive-Invoice Builder
IndustryGST Invoicing & Books · Surat
Sections on the page10
Words of real copy1,161
Images used1
Page weight57 KB of HTML

Measured from the live build. Demos are built in-house, not client projects.

Want something like this for your business?

Same build, your brand and your content.

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Codelith Lab Private Limited · CIN: U62091PN2025PTC247887 · Founded 2025 in Pune
A registered Indian software company founded by Aditya Sonawane & Bhavana Sonawane.