Invoice Maker – How Do I Make a GST Invoice?

A GST invoice lists the seller and customer, invoice number and date, each item’s quantity and price, taxable subtotal, GST rate, tax split and grand total. Invoice Maker calculates these totals offline and supports invoices and quotations, with CGST and SGST for intra-state sales or IGST for inter-state sales.

Worked example

An invoice has one service at ₹10,000 and two items at ₹2,500 each. The taxable subtotal is ₹15,000. At 18% GST, tax is ₹2,700 and the grand total is ₹17,700. For an intra-state sale, CGST and SGST are ₹1,350 each.

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Invoice Maker for Android is coming free to Google Play. The app works offline and requires no sign-in.

How do I make a GST invoice?

A GST invoice lists the seller and customer, invoice number and date, each item’s quantity and price, taxable subtotal, GST rate, tax split and grand total. Invoice Maker calculates these totals offline and supports invoices and quotations, with CGST and SGST for intra-state sales or IGST for inter-state sales.

What information should a GST invoice include?

A GST invoice should identify the seller and customer, show the invoice number and date, describe each item with quantity and price, and list the taxable subtotal, GST rate, tax amount and grand total. Add GSTIN details when they apply to the transaction.

How is GST calculated on an invoice?

Multiply the taxable subtotal by the GST rate divided by 100. For a taxable subtotal of ₹15,000 at 18%, GST is ₹2,700 and the invoice total is ₹17,700.

When should an invoice show CGST and SGST or IGST?

For an intra-state sale, split the GST equally into CGST and SGST. For an inter-state sale, show the full tax as IGST. At 18%, an intra-state invoice shows 9% CGST and 9% SGST.

What is the difference between an invoice and a quotation?

A quotation gives a customer the proposed items, prices and taxes before a sale is confirmed. An invoice records the amount due for a completed or agreed sale. Both can use the same item and GST calculations.

Can I make an invoice without internet?

Yes. Invoice Maker creates, saves and calculates invoices and quotations offline on the Android device.

How do I calculate an invoice total with multiple items?

For each line, multiply quantity by unit price, then add all line totals to get the taxable subtotal. Calculate GST on that subtotal and add the tax to get the grand total.

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