Configure GST for Products and Services

Catalog tax data flows into new invoice lines and later GSTR-1 summaries. Confirm the classification and rate before the item is sold.

Permission required

Owners have full access. Managers and staff need the relevant Products or Services maintenance permission. Services are also location-scoped.

Configure a product

Open Catalog & Inventory → Products, then add or edit the product.

Complete product GST fields

1. Enter a numeric HSN Code with 4, 6 or 8 digits.
2. Select the official GST Unit / UQC used for the product’s quantity.
3. Enter the verified GST % from 0 to 100.
4. Check the selling price against the business-wide tax mode under Settings → Billing & Tax.
5. Save the product, then add it to a controlled invoice and inspect its HSN, UQC, taxable value and tax split.

HSN and UQC work together: a product with HSN must have a UQC. GSTR-1 can require more HSN digits according to the registration’s turnover band.

Configure a service or variant

Open Catalog & Inventory → Services, select the location and add or edit the service.

Complete service GST fields

1. Under Pricing & Tax, enter Service Price.
2. Enter the verified GST %.
3. Enter SAC Code for a standard service or billable variant.
4. Save the service and test its invoice line.

A Service Group is an organizing parent and is not billable. Each billable Service Variant needs its own price, GST rate and SAC. If a service or package line has no SAC, Yepsta can use the GST registration’s Default service SAC; explicit, verified item data is easier to review.

Configure several records

The product and service import templates support GST fields. Products can include hsn_code, uqc and gst_percentage; services can include sac_code and gst_percentage, including group and variant relationships. Use the import screen’s validation step before committing a file, and review how duplicate rows will be skipped or updated.

Correct a tax mapping

Edit the catalog item only after confirming the correct code or rate. The change flows to new invoice lines; issued invoices retain their captured values. Correct an issued paid invoice through the supported credit-note workflow rather than changing the catalog and assuming history will be rewritten.

Warning

A GST % of 0 does not by itself classify a supply as exempt, nil-rated or non-GST. The current business settings do not expose a self-service classification for those GSTR-1 categories. Confirm the treatment before billing and contact Yepsta Support if a required classification cannot be represented.

Important information

Yepsta checks code format and required length; it does not verify that an HSN, SAC, UQC or rate is legally correct for the item.

Tip

Before go-live, filter your catalog review by active sellable items. Parent service groups are not invoice lines, while every active product, standard service and service variant may need GST data.

Related guides

• Create Product Categories and Products
• Create Services, Groups, and Variants
• Import and Export Business Data
• Create a GST-compliant Invoice

Last reviewed: 19 July 2026