The GST tax invoice,
raised against what
actually shipped

Turn a confirmed order or dispatch into a GST-compliant tax invoice — HSN codes, CGST/SGST/IGST worked out from your tax setup, freight and packing, rounding and amount in words, printed clean. Bill only what left the building, run domestic and export invoices, and ring up POS quick bills at the counter — all in one system, cloud or on-premise.

IN & export
domestic tax invoice and export variants in one place
Against dispatch
bill only what actually left the building, once
In words
every total spelled out in Indian numbering
Tax Invoice
Fast Billing · GST invoicing
Against dispatch
IN-2026-0392 · Solidus Hi-Tech
Domestic
Raised against dispatch DC-0311
Billing only the dispatched quantity Double-bill guard blocks anything already invoiced
Item
HSN
Taxable
GST
Precision shaftQty 120 · ₹640
8483
₹76,800
18%
Mounting bracketQty 200 · ₹95
7326
₹19,000
18%
Freight (other charge)CGST 9% + SGST 9%
₹1,200
Added
₹1,14,876 /- Total rounded and spelled out in words
Trusted by SMEs running the Fast Suite across India and worldwide
Desai Brothers
Nikhtish Engineering
Solidus Hi-Tech
Micro India
Mubea Automation
Mutha Ventures
Supertex Industries
Kakade Laser
Jayson Agro
Finolex Industries
Desai Brothers
Nikhtish Engineering
Solidus Hi-Tech
Micro India
Mubea Automation
Mutha Ventures
Supertex Industries
Kakade Laser
Jayson Agro
Finolex Industries
How it works

From a dispatch to a printed,
GST-correct tax invoice

Invoicing here is a financial event, not a stock event — the goods already left at dispatch, and the invoice attaches the value and the tax. New to the category? Start with what is GST billing software.

Pick the dispatch
Choose the party and the confirmed order or dispatch — lines pull in against it, no re-keying
Apply HSN & GST
HSN codes and CGST/SGST/IGST fill in from your tax setup and item/party tax maps
Add charges & round
Freight, packing and insurance attach as charge heads; the total is rounded and put in words
Confirm & print
Save as a domestic (IN) or export (EST) invoice and print it clean with your GSTIN and logo
Bill & sync
Record the payment and post the sale with GST to your accounts and Tally, ready for GSTR
01 — Raised Against Dispatch

Bill what shipped —
never twice

An invoice starts from a real event: a confirmed order or a completed dispatch. You pick the party and the source document, and the item lines come in against that dispatch, so the invoice matches what actually went out. Because the stock already left the building, invoicing is purely financial — and a built-in double-bill guard tracks how much of each dispatched line has been billed, blocking any quantity that was already invoiced. You bill only the un-invoiced remainder, once.

Invoice raised from a confirmed order or a delivery challan
Lines pulled “against dispatch” — no re-typing
Double-bill guard blocks already-invoiced quantity
Order-vs-invoice view shows what is still to bill
New tax invoice
Against dispatch · Type: IN
IN-2026-0392 created Against dispatch DC-0311 · Solidus Hi-Tech
120 nos
0 nos
120 nos
Active
02 — HSN & GST, Worked Out For You

The tax fills in from
your setup, not your head

You should not be doing GST maths on a calculator. Each item carries its HSN code, and the effective tax on every line is read from your tax configuration and the item- and party-level tax maps. Sell within the state and it splits into CGST plus SGST; sell across state lines and it becomes IGST — automatically. Capture party GSTINs and map item-to-HSN-to-GST rates in bulk once, and every invoice after that computes taxable value and tax correctly, line by line.

HSN code on every item line
CGST + SGST intra-state, IGST inter-state — chosen automatically
Item and party tax maps drive the effective rate
Bulk import of GSTINs and item-to-HSN-to-GST rates
GST on IN-0392
Intra-state
Taxable value
₹95,800
CGST @ 9%
₹8,622
SGST @ 9%
₹8,622
IGST
Not applied
03 — Charges, Rounding & Export

Freight, rounding,
words — and exports too

A real invoice is more than item lines. Other charges — freight, packing, insurance, loading — attach as charge heads with their own tax, the total is rounded the way you round, and the amount is spelled out in words in Indian numbering. Selling abroad? Export invoice variants suppress GST or apply LUT / zero-rated treatment as configured, so an exporter raises the right document without a separate tool. Domestic and export invoices share one register and one print flow.

Freight, packing, insurance & loading as charge heads
Rounding and amount in words on every invoice
Export variants with LUT / zero-rated treatment
Invoice & dispatch data ready for e-way bill & e-invoice
Invoice summary · IN-0392
Charges · rounding · words
Freight + packing added
₹1,200
Rounded off
− ₹0.32
Invoice total
₹1,14,876
In words: One lakh fourteen thousand…
Printed
04 — POS Quick Bills & B2B Invoices

The counter and the
boardroom, one system

Not every sale is a detailed B2B invoice. A POS quick bill rings up a walk-in sale at the counter — scan a barcode, take the payment, print on a thermal printer — while a full tax invoice carries party bill-to and ship-to, HSN lines, charges and terms. Both live in the same billing system, both post to your accounts with correct GST, and both feed one sales register. So a business that sells over the counter and to companies runs both without switching software.

POS quick bills for B2C counter sales
Detailed B2B tax invoices with full party & terms
Barcode scan & thermal print via POS hardware
One sales register, one GST posting to your accounts
One billing system
Counter and company sales
POS-8841 · counter sale, thermal print
₹1,180
IN-0392 · B2B tax invoice, GSTIN
₹1.15L
Both in one sales register
Merged
Posted to accounts with GST
Synced
Full capability set

Everything GST tax invoicing covers

Tax Invoice (IN / NIN)

Raise a GST-compliant domestic tax invoice from a dispatch or order — party, HSN lines, taxable value, GST, charges and totals on one document.

Export Invoice (EST / EIN)

Export variants suppress GST or apply LUT / zero-rated treatment as configured, so an exporter raises the correct invoice in the same system.

HSN & GST Config

Tax heads, rates and item/party tax maps decide CGST/SGST/IGST per line; capture GSTINs and item-to-HSN-to-GST mapping in bulk.

Other Charges & Rounding

Freight, packing, insurance and loading attach as charge heads with their own tax; the total is rounded and spelled out in words.

POS Quick Bills

Ring up counter B2C sales with a barcode scan and a thermal print, side by side with detailed B2B invoices in one system.

Invoice Register & GST Reports

Every invoice lands in the sales register, with order-vs-invoice reconciliation and party-wise GST reports for GSTR-1 checking.

"We used to type invoices from the dispatch note and sometimes billed a lot twice. Now the invoice is raised against the dispatch, the guard stops a double bill, and the GST is worked out before I even reach the total — then it posts straight to our accounts."
AM
Accounts manager
Engineering supplier, Pune — Fast Suite user
Bill once
the double-bill guard tracks billed quantity per dispatch, so a shipped lot cannot be invoiced twice
GST ready
HSN, CGST/SGST/IGST, charges and amount in words computed from your setup on every invoice
Why invoice against dispatch

Manual / Excel invoices vs. Fast Billing

A billing desk run on Excel and a calculator loses tax accuracy, double-bills dispatches, and re-keys everything into the accounts. Here is what a proper tax-invoice engine changes. See the format in our GST invoice format guide.

Capability
Excel & calculator
Fast Billing
Invoice tied to dispatch
Typed from a note
Raised against dispatch
Double-billing a lot
Easy to miss
Blocked by the guard
CGST/SGST/IGST
Hand-calculated
From tax config & HSN
Amount in words
Retyped by hand
Auto, Indian numbering
Domestic + export
Separate templates
IN and EST in one
Into the accounts
Re-keyed later
Posted with GST
Common questions

GST tax invoicing FAQs

How is a GST tax invoice raised in Fast Billing?

An invoice is raised from a confirmed order or a completed dispatch, not typed from scratch. You pick the party and the source dispatch, and the item lines are pulled in against that dispatch. Because invoicing is a financial event and stock already left the building at dispatch, a built-in double-bill guard blocks any quantity that has already been billed — so you invoice only what actually went out, once. Whole invoices can be cancelled through credit & debit notes if needed.

How are CGST, SGST and IGST worked out on each line?

Tax is computed automatically from your tax configuration and the item and party tax maps, using each item's HSN code. Intra-state sales split into CGST plus SGST; inter-state sales apply IGST. You set the rates and the item-to-HSN-to-GST mapping once — in bulk if you like — and every invoice line then carries the correct taxable value and GST without hand calculation.

Can it produce export invoices as well as domestic ones?

Yes. Alongside the domestic tax invoice (IN/NIN codes) there are export invoice variants (EST/EIN) that suppress GST or apply LUT / zero-rated treatment as configured, so an exporter raises the right document without a separate system. Domestic and export invoices sit on the same billing engine and the same invoice register.

What is the difference between a POS bill and a B2B tax invoice here?

Both live in one system. A POS quick bill is for the counter — fast B2C billing with a barcode scan and a thermal print — while a detailed B2B tax invoice carries full party bill-to/ship-to, HSN lines, charges and terms. You run counter sales and business invoices side by side, and both post to your accounts with correct GST. See the retail & POS setup for the counter side.

Does the invoice show other charges and amount in words?

Yes. Freight, packing, insurance and loading are configured as charge heads and attach to the invoice; the total is rounded and spelled out as an amount in words in Indian numbering. The finished invoice prints cleanly with your company name, logo and GSTIN, and the invoice and dispatch details supply the data needed for e-way bill and GST returns.

Raise GST invoices you can trust

Live demo on your own dispatches — your HSN codes, your tax rates, your charges and your print format. No generic slideshow.

Get a demo See pricing
Cloud or on-premise Built in Pune by Improsys Domestic, export & POS India & worldwide