Is it mandatory to mention HSN codes for all products?
This Article is for stores running on Solo plan or higher
In India, for small businesses with a turnover of less than ₹5 crore, HSN codes are optional for B2C (Business to Customer) transactions, but they must use a 4-digit HSN code for B2B invoices.
It's mandatory to report the HSN Summary for Outward Supplies (your sales) in Table 17 of GSTR-9. Taxpayers with a turnover above Rs. 5 crores must report HSN codes at a 6-digit level.