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GST invoicing · salesGST invoices, straight from the sale.

Record what you sold and who bought it, and the invoice is already made — the right tax split for the customer's state, sequential numbering, your registered details, what was paid and what is still due. No second app, no template file, and no retyping a customer you already have.

14-day free trial · No credit card · Off until you switch it on

Sales · Tax invoice INV-0231
Sent on WhatsApp
Bridal Glow package₹8,500
CGST 9% + SGST 9%₹1,530
Total₹10,030
Paid₹5,000
Due₹5,030
Priya Sharma · Uttar Pradesh → CGST + SGST · Payment Reminder on
What you get

An invoice is a step, not a second job.

Invoicing gets postponed because it happens somewhere else — a separate app, a template, a number you have to remember to increment. Here it comes from the sale you already recorded.

Built from the sale

Customer, items, amount — already there from the sale. The invoice is one more tap.

A partial payment is a real state, not an error

Tax handled by state

A customer in your state gets CGST + SGST; another state gets IGST. Set your rates once and every invoice splits correctly.

Only a GST-registered seller may charge tax

Off until you want it

Taxation stays switched off until you enable it. A business that does not issue GST invoices still gets a proper bill.

A plain bill downloads as a bill

Sent where they already are

The invoice goes to the customer over WhatsApp — the channel they contacted you on — rather than an email they may never open.

Your logo, website and registered name on it
On the sales desk

Record it, bill it, get paid.

Three screens, in the order money moves.

Add sale · Priya S.
From the profile
CustomerPriya Sharma · from WhatsApp
ItemBridal Glow package
Amount₹8,500
Paid now₹5,000
Record & invoice
The sale, on the customer's record

Nothing retyped.

  • The customer is already a contact — the sale attaches to the same record as their conversation
  • A sale can be more than one thing; each item can carry its own HSN so the invoice is complete
  • Sale Confirmation sends the receipt on WhatsApp the moment you record it, if you switch it on
Tax · by state
Automatic
Your stateUttar Pradesh
Customer in UPCGST 9% + SGST 9%
Customer in MaharashtraIGST 18%
NumberingINV-0231 → INV-0232
The right split, every time

Intra-state or inter-state, decided for you.

  • Your GSTIN and state are set once; the buyer's state decides CGST + SGST or IGST
  • Numbering is sequential and never skips — a tax document that reads like one
  • Your registered name, logo and website appear on it; the rate card you set is what is charged
Pending payments
Due
Priya S. · INV-0231₹5,030 due
Sunil D. · INV-0219₹2,000 · 12 days
Meera J. · INV-0227Paid
Paid, partial, pending

What is owed is a number, not a worry.

  • Every invoice carries what was paid and what is still due, whatever month it was sold in
  • Payment Reminder messages the customer about what is outstanding; Payment Received thanks them the moment you record it
  • Record a payment against a sale and the due figure updates everywhere at once

Sample screens — the app's real layouts, with example data.

The rules it keeps

Rules a tax document has to keep.

Only registered sellers charge taxTaxation switches on with a GSTIN. Without one, a sale still gets a proper bill — labelled as a bill, not a tax invoice.
The buyer's state decides the splitSame state, CGST + SGST; another state, IGST. The rule is applied for you, on every invoice.
Numbers never skipSequential numbering, kept by the app, not remembered by you.
Your identity on every invoiceRegistered name, logo, website and address — from your profile, once.
Part of your AI team

Where the desks meet.

Billing is where the three desks' work turns into money.

Customers

From enquiry to sale

The person you followed up is the customer you bill — one record, one history.

Sales

Bills it

Record the sale, the invoice or bill is made, sent on WhatsApp, and what is due is tracked.

Marketing

Collects and returns

Payment Reminder chases what is owed, Payment Received says thank you, Review Boost asks for the review, Repeat Sale brings them back.

Do it yourself

Invoicing from your next sale.

No onboarding call. No implementation project. No consultant.

5 MIN

Turn on taxation

Enter your GSTIN, state and rates. One-time, and it stays off until you do it.

1 MIN

Record a sale

Pick the customer, add what they bought, enter what they paid. Partial payments are fine.

1 TAP

Send the invoice

Numbered, split correctly, with your details — on WhatsApp, to the customer who is already in the thread.

Sale Confirmation, Payment Reminder and Payment Received go over WhatsApp as templates Meta approves — usually the same day. The invoice itself is made instantly, whether or not those are on.

Questions

Questions, answered

Do I have to use GST invoicing?

No. Taxation is off by default. If your business does not issue GST invoices, you record sales without it and the customer gets a plain bill — labelled as a bill, not a tax invoice.

Does it handle partial payments?

Yes. A sale records what was paid and what is still due, the invoice reflects that, and the Pending Payments tab lists every debt whatever month it was sold in.

How does it know whether to charge CGST + SGST or IGST?

From your state and the customer's. A buyer in your state gets CGST + SGST; a buyer in another state gets IGST. You set your rates once and the split is applied on every invoice.

Where do my business details come from?

From your business profile, which you fill in once — registered name, GSTIN, address, logo and website then appear on every invoice without being retyped.

Can I invoice a customer who came from WhatsApp?

Yes. Anyone who has messaged you is already a contact, so a sale and its invoice attach to the same customer record as the conversation — and the invoice goes back over the same WhatsApp thread.

Free to start

Bill your next sale in one tap.

Free for 14 days, no card. Every paid action shows its price before it runs, from a prepaid balance you top up yourself.

Made in India, for Indian businesses. · GrowStart AI® is a registered trademark of HEX64 InfoSolutions Pvt Ltd.

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