Set Default GST Rate for New & Custom Products
Updated Apr 13, 20261 min read
You can configure a default GST rate in GST Pro so that it is automatically applied to:
New products
Custom products (added manually to orders)
This helps ensure consistent taxation without needing to manually set GST each time.
What This Feature Does
Once enabled:
Every new product will use the default GST rate
Any custom line item added to an order will automatically have GST applied
Reduces manual errors and saves time
How to Set Default GST Rate
Go to GST Pro in your Shopify admin
Open Settings
Click on Taxes
Scroll down to Default GST Rate

Set Your GST Percentage
Enter your preferred GST rate
Example:
18%
Save after making the change

How It Works
The selected GST rate becomes the default tax rate
It is automatically applied to:
Newly created products
Custom items added during order creation
Verify the Setup
To confirm everything is working:
Create a test order
Add a custom product or a new item
Generate/print the invoice
You should see the default GST rate applied to the item.
Important Notes
This setting applies only to new or custom products
Existing products with defined GST rates will not be overridden
You can still manually adjust GST for specific products if needed
Tips
Use a standard rate like 18% if most of your products fall under it
Always test with a sample order after making changes
Summary
Set a default GST rate in Settings → Taxes
Applies automatically to new and custom products
Helps maintain consistency and reduce manual effort
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