Calculating PIN to PIN distance is an important component of GST e-Way billing system
Introduction of GST has brought a major change in the country’s tax collection process. However, it is possible that new taxpayers may face some challenges in understanding the various rules and regulations. A relevant example is the PIN to PIN distance calculation needed for the e-Way Bill system. Let’s check out the details for better understanding.

What is PIN to PIN distance in GST?
In a business environment, physical goods are transported from one location to another. This could be within the same state or between different states. Instead of physically measuring the distance between the sender and receiver, the GST system uses a simple PIN to PIN distance system. Users can easily find this via the government site – https://einvoice1.gst.gov.in/Others/GetPinCodeDistance. This link can also be used for PIN to PIN distance – https://ewaybillgst.gov.in/Others/P2PDistance.aspx.
When goods have to be transported from one location to another, an e-Way bill is needed under GST rules. For this bill, you will need the Dispatch From (source/supplier) PIN code and the Ship To (destination/recipient) PIN code. These PIN codes are used to determine the approximate distance the goods will travel. This is known as the PIN to PIN distance.
It is important to note that this PIN to PIN distance is based on an approximate motorable/road distance. The distance calculations are already pre-defined in the system. PIN to PIN distance in GST should not be confused with the direct air distance or a straight line distance between two PIN codes.
Why PIN to PIN distance is needed in GST?
There are various reasons why PIN to PIN distance is necessary in GST. One of the key reasons relates to the validity period of the e-Way bill. The validity is directly related to the distance calculated as per the PIN to PIN distance. Given below are some validity periods for regular/normal cargo items.
- Up to 200 km – e-Way bill validity is 1 day
- 201 km to 400 km – Validity is 2 days
- 401 km to 600 km – Validity is 3 days
Similarly, the validity increases with every 200 km increase in PIN to PIN distance. For Over Dimensional Cargo (ODC), the validity is 1 day for every 20 km or part thereof. Validity period starts at the time when the e-Way bill is generated.
Another reason why PIN to PIN distance is necessary is to ensure compliance. GST officials can check vehicles to see if their e-Way bill is valid or has expired. The PIN to PIN distance also works as a means to prevent misuse and tax evasion. It helps create a standardized system for the entire country. PIN to PIN distance makes it difficult to manipulate the system.
PIN to PIN distance is also beneficial for transporters and businesses. With this system, they can better plan their logistics. By working with the e-Way bill expiry date, these entities can ensure that dispatches are done in a timely manner.
Important things to remember
It is important to remember some critical rules when handling PIN to PIN distance. For example, the PIN to PIN distance is strictly based on the locations of the supplier and recipient. It should not be linked to the transporter’s location. It is important to use official government-based sites to calculate PIN to PIN distance. These have already been mentioned in the above paragraphs.
PIN to PIN distance for GST should not be based on Google Maps or other third-party tools, as these may not match the official distance between two PIN codes. Entering the wrong distance can lead to penalties. It is also important to select the correct PIN codes. Using the wrong PIN codes can lead to departmental review.
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