GST billing & invoicing
GST billing software for your counter, office and phone
Make GST invoices in seconds. SMI Books picks the right tax from the State of Supply, updates stock and posts the accounts as you save.
In one line
What is GST billing software?
GST billing software makes tax invoices with your GSTIN, HSN codes and the correct GST split, and keeps the records your returns need. SMI Books also updates stock, party balances and double-entry accounts from every bill, on Windows and Android.
Invoicing
Bill in seconds — the way you already work
Pick the customer, type an item, enter the quantity. Tax, totals, round-off and the next bill number are filled in for you.
- Bill To and Ship To side by side, item description column
- Cash or credit on the same row as State of Supply
- Transport and e-way bill details when you need them
- Keyboard-first on the PC, step-by-step on the phone
12 document types
From quotation to credit note, all linked
Turn an estimate into a sale order, a challan into an invoice, and a return into a credit note — nothing typed twice.
- Estimate / Quotation, Proforma, Sale Order, Purchase Order
- Delivery Challan — bill in full or in parts
- Sale Return / Credit Note, Purchase Return / Debit Note
- Payment-In, Payment-Out and Expenses
GST
GST worked out on every line
CGST + SGST inside your state, IGST outside it — decided from the State of Supply, with HSN / SAC and rates saved on each item.
- Tax split by head and rate on every bill
- Credit and debit notes reverse tax correctly
- GST summary, rate and HSN reports
- GSTR-3B JSON export for your CA
Documents
Every document a GST business makes
What you get
Everything in one place
Tax invoices
GSTIN, HSN/SAC, taxable value, tax heads, amount in words.
12 documents
Linked conversions, nothing typed twice.
A4 & thermal
Four layouts in your colours, 58 / 80 mm receipts.
WhatsApp PDF
Send the bill to the customer in one tap.
GST reports
Summary, rate-wise, HSN-wise, GSTR-3B JSON.
Reminders
Overdue bills and WhatsApp payment reminders.
Questions
Frequently asked
Does it calculate GST and help with returns?
Yes. CGST + SGST or IGST is applied from the State of Supply on every bill, with HSN/SAC codes. You get GST reports and a GSTR-3B JSON export for your CA.
Can I print on a thermal printer?
Yes. Bills print on A4 in four layouts with your logo and colours, or as 58 mm / 80 mm thermal receipts. You can also send the bill as a PDF on WhatsApp in one tap.
Does SMI Books work without internet?
Yes. Billing, stock, production and reports all work offline. Whatever you save uploads by itself when the internet is back, and your other devices catch up.
How much does SMI Books cost?
Plans start at ₹149 a month plus 18% GST for a retail shop and go up to ₹599 a month for a full factory. Yearly plans save about 8%. Every new business gets a 30-day free trial of all features.
Start today
Run your whole business from one book — free for 30 days
Install on your Windows PC and your Android phone, sign in once, and bill, stock, produce and account from anywhere. No card needed.