Units, HSN & GST rate
Set each product's unit of measure, HSN code and GST rate so bills, tax and GSTR-1 (including the HSN summary) come out right.
Three product fields drive correct tax and reporting: the unit, the HSN code, and the GST rate. Set them once per product and every bill inherits them.
Unit of measure (UOM)
The unit is how you sell the item — piece, kg, litre, plate, box, metre. It shows on the invoice and keeps quantities meaningful (2 plates, 5 kg).
HSN code
HSN classifies goods for GST. Adding it to a product means:
- It prints on the tax invoice where required.
- It feeds the HSN summary in your GSTR-1 export automatically.
GST rate
Each product carries its GST rate (0/5/12/18/28%). Tax is then computed per line as you bill. If your listed prices are tax-inclusive, use the GST-inclusive calculator so the stored rate is the correct base and the split prints right.
These fields are optional to start billing, but fill them in before you rely on GSTR-1 — the HSN summary and rate-wise totals depend on them.
Frequently asked
Where do I set the HSN code and GST rate for a product?
On the product's create/edit screen. The GST rate drives tax on every bill line, and the HSN code prints on tax invoices and feeds the HSN summary in your GSTR-1 export automatically.
What is the unit of measure used for?
It's how the item is sold — piece, kg, litre, plate, box, etc. It appears on invoices and keeps quantities meaningful across billing and stock.