GST invoices and documents
Tax invoices and bills of supply, estimates, proforma invoices, sales orders, credit notes and debit notes, with CGST, SGST and IGST worked out from place of supply.
GST billing and accounting software for Indian businesses
Apex Books creates GST invoices, sends WhatsApp payment reminders, tracks stock and keeps your ledger, day book and GST working papers in one place — on the web, Windows and Android.
Open Apex BooksRead the FAQWeb browser · Windows 10/11 desktop app · Android app · same books everywhere
Billing that gets you paid
Create a GST invoice in under a minute, share it on WhatsApp and collect by UPI. Every amount and tax figure is calculated by the server, so totals are always consistent.
WhatsApp share and reminders
Share any document in one tap. Send a reminder for an unpaid invoice, or remind every overdue customer with one message each listing all their dues.
UPI QR and bank details
Your bank account, IFSC and UPI ID print on every invoice, with a scan-to-pay QR code for the exact balance due.
Add customers while billing
Type a new customer or item name on the invoice and save it in one click — it gets a balance, a phone number for reminders and appears in reports.
Nine invoice layouts and thermal receipts
Choose from nine A4 layouts, or print 80 mm and 58 mm roll receipts for counter sales.
Payments with allocation
Record full or part payments against one or more invoices, take advances, and collect a payment while saving the invoice.
Inventory, POS and purchases
Stock moves automatically with every sale, purchase and return, valued at moving-average cost.
Point of sale with barcode
Bill at the counter by name or barcode with a USB or Bluetooth scanner, or the phone camera on Android. Cash tendered and change are recorded.
Stock tracking and reorder
Opening stock, adjustments, low-stock thresholds and a reorder list that drafts a purchase order for review.
Purchase bills and expenses
Record supplier bills — or scan a photo of the bill to fill the draft — plus expenses with GST input credit kept for review.
Accounts, balances and GST
A full double-entry ledger sits underneath every transaction, so reports always agree with each other.
Party balances
See “You’ll get” and “You’ll pay” for every customer and supplier, with statements, receivables ageing, credit limits and payment terms.
Day book and cash book
Everything dated a day with money in and out, a cash and bank book, multiple bank accounts and bank reconciliation.
Financial statements
Ledger, journals, trial balance, profit and loss and balance sheet, exportable to Excel and PDF.
GST working papers
GSTR-1, GSTR-2A and GSTR-3B prepared from your posted books, plus GST analysis and HSN-wise item activity.
Teams and companies
Run several companies, invite owners, editors and viewers, and lock closed periods so posted months cannot change.
Backups and migration
Encrypted company backups and a read-only preview import from Vyapar before you switch.
Apex Books at a glance
| Need | How Apex Books handles it |
|---|---|
| GST invoice with correct tax | CGST/SGST or IGST from place of supply; HSN/SAC on every line |
| Getting paid faster | WhatsApp share, overdue reminders, UPI QR on invoices |
| Counter sales | POS with barcode scanning and 80 / 58 mm thermal receipts |
| Knowing who owes what | Party balances, statements and receivables ageing |
| Daily close | Day book with money in and out; cash and bank book |
| GST return preparation | GSTR-1, GSTR-2A and GSTR-3B working papers (file on the GST portal) |
| Working anywhere | Web, Windows and Android apps on the same books |
Frequently asked questions
Short answers about what Apex Books does today.
What is Apex Books?
Apex Books is GST billing and accounting software for Indian small and medium businesses. It creates GST invoices, records purchases, expenses and payments, tracks stock, and keeps a double-entry ledger with trial balance, profit and loss and balance sheet. It runs in the browser and as Windows and Android apps that share the same books.
Can I send invoices and payment reminders on WhatsApp?
Yes. Any invoice, estimate, order, receipt or credit note can be shared on WhatsApp in one tap, with the amount, balance due and your UPI ID filled in. Unpaid invoices have a Send reminder button, and the Parties page can remind every overdue customer, one message per customer listing all their overdue invoices. Nothing is sent until you press send in WhatsApp.
Does Apex Books show my bank details and a UPI QR code on invoices?
Yes. Bank name, account number, IFSC, branch and UPI ID entered under Settings → Document branding print on every invoice layout. When money is still due, the invoice also carries a UPI scan-to-pay QR code for the exact balance, so customers can pay from any UPI app.
Does it support POS billing, barcode scanning and thermal printers?
Yes. The point-of-sale screen adds items by name or barcode, works with USB and Bluetooth barcode scanners, and can scan with the phone camera on Android. Bills, invoices and receipts print as 80 mm or 58 mm thermal receipts, with cash tendered, change and a UPI QR code when a balance is due.
Can Apex Books prepare GSTR-1 and GSTR-3B?
Apex Books prepares GSTR-1, GSTR-2A and GSTR-3B working papers directly from your posted invoices, purchases and notes, exportable to Excel and PDF. They are book-derived figures for review: file your return on the GST portal after checking them. E-invoicing and e-way bill generation are not yet built in.
What is the day book in Apex Books?
The day book lists every entry dated a chosen day — sales, purchases, expenses, payments and transfers — with total sales, purchases and expenses and the cash and bank money that came in and went out. You can step through days and open any entry from the list.
Which devices does Apex Books work on?
Apex Books works in a web browser, as a Windows 10/11 desktop app with a per-user installer, and as an Android app. All three connect to the same company books, so an invoice created on the phone appears on the desktop straight away.
Can I move my data from Vyapar?
Yes. Apex Books can import a Vyapar backup. The import is shown as a read-only preview first and nothing is posted to your books until you confirm, so you can check parties, items and balances before switching.