Table of Contents

Introduction to Goods and Services Tax (GST)

GST is a regressive tax because it could negatively impact those whose estimated income is in the lowest and middle-income brackets. Thus, according to these critics, the GST may worsen income inequality and increase social and economic disparities.

Some countries have started to lower or eliminate the GST on necessities like food and medical care to reduce these worries.

The thing to remember is that the present idea of taxing the production, sale, and provision of goods or services would be substituted by the GST, which would only apply to the supply of goods or services. This consumption tax would be destination-based.

You can say that GST is considered a form of a regressive tax in such a way that it consumes a higher portion of the income from the households and lowers the incomes of those who have higher incomes. 

Basics of Purchase Orders

A business’s potential to succeed depends significantly on its purchase order processes.

A category of formal documents transferred from a buyer to a seller. This transfer takes place when the goods or services are ordered. A purchase order also mentions the items and the goods that have been ordered their price, and the details of the delivery of the goods as well.

Apart from these details, what a purchase order is known for includes other information such as the details of the payment methods, contact information, or any other specific requirements related to the goods being ordered.

Why are purchase orders used?

Purchase orders are used as a communication bridge, it’s a legal document so you can also use it as proof when needed. It also helps with the overall management of the inventory as well.

Types of purchase orders:

There are typically three types. These are

  1. Contract purchase order
  2. Blanket purchase order
  3. Rush purchase order

So, When the supplier accepts a purchase order, it frequently becomes legally binding. They have an agreement with the buyer and must supply the goods.

In companies where purchase or spend management procedures are clearly defined, employees can use POs to submit specific requests for internal resources.

For the creation of a purchase order, you need to have a purchase order number, all the relevant details of the buyer and the seller, the date on which the order is issued, and the quoted pricing as well. 

Understanding GST Application on Purchase Orders

There should be a thorough understanding of the GST application on purchase orders which indeed is a critical task. But once a business gets hold of it, it assures perfect accounting, helps in claiming an input tax credit, and also helps in removing tax liabilities.

Thus, the tax collected is sent to the tax authorities by the supplier. After the supplier meets legal requirements and remits the tax to the government, the buyer may request a credit for the tax that was paid during the purchase.

Hence, GST is imposed on a variety of products. In addition to the price and tax, a purchase order is created with the specifics of the goods sold. When the relevant landed cost rule is linked to the purchase order, the GST is updated.

To receive the items on purchase orders, you first need to enter receipts using the standard purchase order receipts program. Now, let’s have a look at the GST on Purchase Orders.

When there is an intra-state purchase in which  The supply of goods or services is subject to the CGST and SGST taxes. Hence, the order line amount or the assessable value is where the taxes are applied.

GST is also applicable on inter-state purchases, which means the products or services are shipped from one state and delivered to another state.  On the goods, the destination state’s IGST is applicable.

For the purchase order GST calculation, there are some steps that you need to follow.

  1.  Press the Enter key after selecting Transaction > Order Entry.
  2. Enter Purchase in Book Code and click the Enter key.
  3. Choose the day book from the list of available purchase day books to complete the Purchase Order GST entry.
  4. Choose GST under Net Amount in the AV Calculation Method and click Enter.
  5. Enter your GST information, including details like the state of supply and invoice type.

In the end, your GST liability will be calculated. To adjust the GST amount and round it off, hit the enter key. GST is calculated using the Assessable Value or the market value for goods that are obtained at no cost, such as samples and materials provided at no cost.

For purchase order GST calculation, the thing to remember is that purchase value for purchases that are tax-inclusive includes tax. The tax must be calculated using the transaction value that provides for taxes. Either taxes are calculated in addition to the order line price, or the entire purchase order line must include taxes.

You must understand the purpose and procedure for a purchase order if you are buying or selling products. Purchase orders facilitate simple and secure trading between buyers and sellers, and they offer accountability for ordered goods as they move through the supply chain.

GST Compliance in Purchase Order

To have a sound knowledge of purchase orders, one should be familiar with the key aspects of compliance. These are:

  • The applicable GST and its types: There are three types of GST; CGST, SGST, and IGST. 
  • GST calculation: The formula should be: Taxable value x GST rate/100
  • ITC: There are certain conditions to claim ITC including the person has to be registered to GST and the purchase must have to be linked with the taxable activity of the business.

Meanwhile, GST applies to purchases made within the state, and the state government gets the tax revenue.

Lastly, IGST is relevant to import and interstate transactions. Thus, GST compliance in purchase orders helps you succeed in your business and ensures that the buyer and seller fulfil their tax obligations correctly. It is essential to stay updated on the GST regulations to ensure that purchase orders comply with the law.

In a purchase order, the key features of GST compliance include the correct GST identification numbers. This is to check the authenticity of both involved buyers and sellers—and also state precisely the taxable value of the products or services in the purchase order.

Secondly, ensure that the reverse charge mechanism is mentioned in the purchase order because, in that case, the buyer will pay GST directly to the government. Also, mention the place of supply in a purchase order, as GST is based on the supplier’s location.

Lastly, the purchase order must be updated with the latest requirements to avoid any problems. These are the essential aspects of GST Compliance for Procurement. The point to remember is that GST is a business reform as well as a tax reform.

Understanding what purchases are currently being made is the first step in the procurement planning process. It will be crucial for businesses to map out all of their purchases so that they can better understand them.

GST Calculation and Breakdown in Purchase Order

As a buyer, you need to know the Net Price of the good and the applicable GST rate (5%, 12%, etc.) to figure out the GST on your goods. However, some products are free from GST taxes, such as electricity, alcoholic beverages, and petroleum products.

Hence, the state governments impose separate taxes on these goods based on the prior tax system. To calculate the GST, you need a formula, which is shown below. It says that when the GST is included in the supply value, then the formula will be under.

GST = supply value – [supply value x {100/(100+GST%)}]

The calculation of GST is based on the formula where you have to multiply the taxable value of goods by the GST rate and get the amount divided by 100.

When the values are broken down in the purchase order, they are categorised as:

  1. Identification of the GST which has to be applied
  2. Every item and its calculation of the GST
  3. Breakdown in PO

There are some other points as well that should be kept in mind while calculating the GST in the purchase order. These are:

  • Include the landed costs such as insurance, and freight costs
  • Assure that there is a reverse charge mechanism applied
  • Inculcate tools and software that help in an easy calculation and also help in maintaining records.

Reverse Charge Mechanism (RCM) and its Relevance in Purchase Orders

The applicability of the reverse charge mechanism occurs in transportation services, accommodation in hotels, sale or auction, goods that are received from unregistered dealers, and restaurant services as well.

The relevance of the reverse charge mechanism in terms of purchase orders needs to keep the following points in consideration:

  1. Compliance 
  2. Transparency
  3. ITC claims

The importance of the reverse charge mechanism in the purchase order is to identify transactions.

Input Tax Credit (ITC) and Purchase Orders

The tax deducted from the output tax that is due to sales is known as the input tax credit.

Input Tax  Credit (ITC) in Purchase Orders encourages businesses to have proper records of their transactions. Also, it ensures adequate documentation and promotes fair taxation.

Legal Aspects and Documentation Related to GST in Purchase Orders

Businesses need to consider the legal aspects and all essential documentation when it comes to GST in purchase orders. The most important thing that is included in the purchase order is the accurate recording of information.

Moreover, the purchase order mentions the applicable GST rates for each item. Make sure to mention in the purchase order if RCM applies to specific transactions.


Its very important to have a sound knowledge about the application of various other types of GST including CGST, IGST, and the SGST.

You should have a grip on the calculation of the GST and that is only possible when you know the right formulas and are familiar with all the various aspects of the calculation.

During the whole process, the best strategy is to know how to overcome the burden of tax on your business. This is achievable by claiming ITC. To claim ITC, you should be familiar with the core points that are needed to claim ITC. Also, you should stay updated about the reverse charge mechanism.

The best way to attain success in your business is to make compliance your biggest ally. With the help of proper documentation and management of these documents, not only helps with compliance but is also helpful during the audit as well.

Since it’s an ongoing process, you need to be aware of the changes that are suspected to be instilled with the coming time.

Also Read: How to Calculate GST in an Excel Sheet: Step-by-Step Guide


  • What is GST?

GST stands for Goods and Services Tax.

  • What is GSTIN?

The identification number provided to each registered supplier is called the GSTIN.

  • What is a purchase order?

It is a formal document that contains most of the relevant information regarding the goods and services that have been ordered. 

  • How does the GST work?

The value added to the “net price” when sold to the customer is known as GST, or goods and services tax.

  • How is GST calculated?

Multiply the taxable value of goods by the GST rate and get the amount divided by 100.

  • What is a taxable value in a PO?

Before adding the GST, the taxable value is the actual cost of goods and services.

  • Is GST applicable on the Purchase order?

GST is applied to a subcontracting purchase order’s amount as indicated by the supplier.

  • How is the tax code derived in the purchase order?

By using the condition technique and information record, the tax code can be set as default in Purchase Orders.

  • How much is GST on purchases?

GST is a 10% tax on the products, services, and other things that are being used.

  • Does Reverse Charge Mechanism (RCM) affect purchase orders? 

In such a situation it’s the buyer’s responsibility to pay the GST directly to the government.

author avatar
Amitha Shet Content Writer
Amitha is a creative enthusiast, which gets her into educating the world about things she comprehends. Finance, business, and digital transformation are the topics that she is profoundly interested in so that she can make things simpler for the audience. She is currently a content strategist for a fintech company. She holds a Bachelor of Engineering in Civil Engineering, although finance is a niche that piques her interest to not just educate but to invest and gain experience.

Leave a Reply