---
url: /gst-manager-shopify/faq.md
description: >-
  Common buyer questions about GST Manager for Shopify — GST computation, GSTIN
  capture, invoices and credit notes, Shopify tax setup, Protected Customer
  Data, billing, and the free plan.
---

# FAQ

Quick answers to the questions merchants ask most about GST Manager for Shopify.

## Does this replace Shopify's built-in tax?

Yes — for GST. GST Manager computes the CGST/SGST/IGST split and issues the tax invoice, so Shopify
should charge **0% tax**. Prices are treated as GST-inclusive and the tax is back-solved out of
them, so the invoice total always equals what the customer paid. See
[Configure Shopify taxes](/gst-manager-shopify/guides/tax-setup).

## How does it decide CGST/SGST vs IGST?

By comparing your **registered state** (from your GSTIN) with the order's **place of supply**:
same state → **CGST + SGST** (half each); different state → **IGST**.

## Where do product GST rates come from?

From a per-product **HSN/SAC + GST rate** you set under **Products → Import HSN codes** or the
per-product HSN block. If a product has no rate, GST Manager uses your **Default GST rate**
(typically 18%). A slab rule is available for clothing/footwear.

## How do customers give their GSTIN?

Through the cart-page **"Get GST Invoice"** block (a Theme App Embed), from Shopify's native **B2B
Company** tax ID, from their customer record, or by admin override. You control cart capture under
**Settings → Other Settings**.

## When is the tax invoice issued?

Immediately for regular orders. **B2B Company** orders get a **Proforma** first, and their Tax
Invoice is issued when the order is **fulfilled** or **paid** — whichever happens first — matching
the legal time-of-supply trigger.

## Can I edit an order after the invoice is issued?

The invoice can freeze a **party snapshot** at issuance (Pro's "Lock invoice contents"), so later
edits in Shopify don't drift into an already-issued document. The deliberate correction path is the
order's **Regenerate** action, which refreshes the buyer block while keeping the same invoice number
and date.

## What GST reports can I export?

GSTR-1 (Full / B2B / B2C), GSTR-3B summary, offline-tool CSVs (B2B, B2C small, B2CSA amendments), an
HSN-wise B2B summary, and a GSTN-portal JSON. Reports run in the background with a History tab for
re-downloads. Reports need the **Starter** plan or higher. See
[Reports](/gst-manager-shopify/features/reports).

## What is "Protected Customer Data" and do I have to do anything?

It's Shopify's platform rule for apps that read order/customer data. You approve it once in your
Partner Dashboard so order webhooks are delivered. Until then, use **Generate now** on each order.
See [Data & privacy](/gst-manager-shopify/data-and-privacy).

## How much does it cost?

There's a **Free** plan (up to 50 orders/month) and paid **Starter / Pro / Scale** plans, each with
a **7-day free trial**. Billing runs through Shopify and appears on your Shopify invoice. See
[Billing](/gst-manager-shopify/billing).

## Do I lose my invoices if I uninstall?

The GST data written to your orders/products stays on your store as metafields. Download offline
copies (**Reports → Bulk download**) before uninstalling if you want them outside Shopify. See
[Uninstalling](/gst-manager-shopify/uninstalling).

## Is my data safe?

GST Manager reads only the data needed to produce invoices, over HTTPS, and implements Shopify's
mandatory data-deletion webhooks. See [Data & privacy](/gst-manager-shopify/data-and-privacy).

## Related pages

* [Requirements](/gst-manager-shopify/requirements)
* [Configure Shopify taxes](/gst-manager-shopify/guides/tax-setup)
* [Invoices & credit notes](/gst-manager-shopify/features/invoices)
* [Billing](/gst-manager-shopify/billing)
* [Troubleshooting](/gst-manager-shopify/troubleshooting)