GST Refund Process: Complete Guide to Eligibility, Forms, Calculation & Claim (2026)

Who can claim a GST refund?

A GST refund can be claimed by the person legally entitled to it. Common eligible claimants include:

• Exporters of goods or services making zero-rated supplies without payment of tax under LUT or bond
• Exporters of goods who paid IGST on export invoices
• Service exporters who paid IGST and claim a refund through RFD-01
• Suppliers to SEZ units or SEZ developers, subject to endorsement and documentation
• Businesses with accumulated ITC due to inverted duty structure
• Taxpayers with an excess balance in the electronic cash ledger
• Taxpayers who paid tax under the wrong head, such as CGST and SGST instead of IGST
• Suppliers or recipients of deemed exports, depending on who is eligible to claim
• Persons entitled to refund due to assessment, appeal, tribunal order or court order
• Unregistered persons in specific cases, such as canceled construction contracts or terminated long-term insurance policies, where GST was borne by them, and the credit note route is no longer available

How is GST refund calculated?

1. Refund for export under LUT without payment of tax

For zero-rated supplies made without payment of tax under LUT or bond, the refund of ITC is calculated under Rule 89(4). For this formula, Net ITC includes eligible ITC on inputs and input services availed during the relevant period, excluding ITC for which a refund is claimed under specified sub-rules. The value of exported goods is taken as the lower of the free on board (FOB) value declared in the shipping bill or the value declared in the tax invoice/bill of supply.

Formula: Refund Amount = Turnover of zero-rated supply of goods and services × Net ITC ÷ Adjusted Total Turnover

Example

Refund = ₹80,00,000 × ₹12,00,000 ÷ ₹1,00,00,000
Refund = ₹9,60,000

The maximum eligible refund in this example is ₹9,60,000, subject to portal validation and supporting documents.

2. Refund for inverted duty structure

An inverted duty structure means the GST rate on inputs is higher than the GST rate on outward supplies, leading to accumulation of ITC. The refund is calculated under Rule 89(5). In this formula, Net ITC refers to ITC availed on inputs only. ITC on input services is not included in Net ITC for inverted duty refund. However, input service ITC is relevant in the denominator used in the second part of the formula.

Formula: Maximum Refund Amount = {(Turnover of inverted rated supply of goods and services × Net ITC) ÷ Adjusted Total Turnover} - {Tax payable on such inverted rated supply of goods and services × Net ITC ÷ ITC availed on inputs and input services}

Example

Step 1 = ₹50,00,000 × ₹6,00,000 ÷ ₹70,00,000 = ₹4,28,571
Step 2 = ₹75,000 × ₹6,00,000 ÷ ₹8,00,000 = ₹56,250
Maximum refund = ₹4,28,571 - ₹56,250 = ₹3,72,321

Note: The 56th GST Council recommended extending 90% provisional refund to inverted duty structure refund claims, similar to the mechanism available for zero-rated supplies.

Here are some common documents required for GST refunds:

• Filed GST returns for the relevant period
• Pre-validated bank account linked to the GSTIN or temporary registration
• Relevant invoices, debit notes, credit notes and ledgers
• Statement or offline utility required for the selected refund type
• Reconciliation between books, returns and portal data
• Undertakings or declarations as applicable

For businesses that file regular GST refund claims, maintaining invoices, ITC records, return data, and GST reports in one place can reduce mismatches when filing refunds. BUSY Accounting Software helps businesses manage GST billing, accounting, inventory, ITC records, and GST reports in a more organized way. 

Export of goods with IGST payment

• Shipping bill or bill of export
• Export invoice details in GSTR-1 /Table 6A
• Valid GSTR-3B
• Export manifest or departure manifest
• Correct port code, shipping bill number and date
• Active IEC-GSTIN mapping on ICEGATE

Export under LUT without payment of tax

• LUT or bond details
• Export invoices without IGST payment
• Shipping bills or airway bills for goods
• FIRC/BRC or payment realisation proof for services
• Statement of export invoices
• ITC reconciliation with purchase register and GSTR-2B
• Turnover and Net ITC working under Rule 89(4)

Inverted duty structure refund

• Statement for inverted rated supplies
• Purchase invoices for inputs
• ITC working showing input-only Net ITC
• GSTR-2B reconciliation
• Output tax working for inverted rated supplies
• Books of accounts and stock records, if required by the officer

Excess cash ledger refund

• RFD-01 under “excess balance in electronic cash ledger”
• Bank account details
• Return and cash ledger details as available on portal

GST refund pre-application form

Before filing many refund claims, taxpayers may need to submit the Refund Pre-Application Form on the GST portal. It captures details such as the nature of business, IEC date for exporters, Aadhaar number of the authorized signatory, export value, income tax paid , advance tax, and investment details. The GST portal states that the form does not need to be signed and cannot be edited or resubmitted once submitted.

How to apply for GST refund in Form RFD-01

1. Log in to the GST portal.
2. Go to Services > Refunds > Application for Refund.
3. Select the refund category.
4. Choose the tax period.
5. Enter refund details, turnover details and ITC details as required.
6. Upload the applicable statement or offline utility.
7. Attach supporting documents.
8. Select the bank account.
9. Preview the application carefully.
10. Submit using DSC or EVC, as applicable.
11. Save the ARN for tracking.

The GST portal allows refund applications to be saved for up to 15 days. If not filed within that period, the saved draft is purged from the GST database.

IGST refund on export of goods

For export of goods with payment of IGST, a separate RFD-01 is generally not required. The shipping bill acts as the refund application under Rule 96. The refund is processed through GSTN and Customs/ICEGATE data matching. Before expecting the refund, check:

• Whether the GSTR-1 export invoice data is correctly filed
• Whether GSTR-3B has been filed
• Whether the shipping bill number, date and port code match
• Whether EGM/departure manifest has been filed
• Whether the bank account and IEC-GSTIN mapping are correct
• Whether the refund scroll has been generated on ICEGATE

LUT route vs IGST route for exporters

A regular exporter usually benefits from the LUT route because GST is not paid upfront on export invoices. However, LUT should be filed before making zero-rated supplies without payment of tax. Practical treatment may depend on timing, portal filing and officer handling. Check the table for a comparative analysis:

Refund by unregistered persons

Unregistered persons can claim GST refund only in specific situations. The unregistered person must obtain temporary registration on the GST portal using PAN, undergo Aadhaar authentication, add bank details and file Form GST RFD-01 under the category “Refund for unregistered person”. Separate applications are required for invoices issued by different suppliers or suppliers registered in different states. CBIC Circular 188/20/2022 covers cases such as:

• Cancellation of flat/building construction contract where GST was paid
• Termination of long-term insurance policy where GST was borne by the buyer
• Cases where the time limit for supplier credit note has expired

Refund for embassies and international organisations

Embassies, consulates, UN bodies and other notified persons with UIN can claim refund of GST paid on inward supplies, subject to the prescribed conditions. The GST portal allows such refund through Form GST RFD-10, generally linked with GSTR-11 details. The law currently refers to a 2-year time limit from the last day of the quarter in which such supply was received.

What happens after filing a refund application?

Rule 90 provides that if deficiencies are noticed, the officer communicates them in RFD-03 and the applicant must file a fresh refund application after rectification. Rule 92 provides that if refund is proposed to be rejected, the officer must issue RFD-08 and allow reply in RFD-09 within 15 days.

Interest on delayed GST refund

Section 56 provides interest if refund is not paid within 60 days from the date of receipt of the refund application under Section 54(1). The normal rate is up to 6% as notified. Where refund arises from an order passed by an adjudicating authority, appellate authority, tribunal or court that has attained finality, and is still not refunded within 60 days, the higher rate under the provision may apply. For example:

Refund amount: ₹5,00,000
Delay beyond 60 days: 30 days
Interest rate: 6% per annum

Interest = ₹5,00,000 × 6% × 30 ÷ 365
Interest = ₹2,466 approximately

What to do if GST refund is rejected

Before final rejection, the officer should issue a show cause notice in RFD-08. The taxpayer should reply in RFD-09 within the allowed time and address each objection with documents. If the refund is rejected through RFD-06, the taxpayer can file an appeal in Form GST APL-01 within 3 months from the date the order is communicated. Section 107 allows a further 1 month delay condonation if sufficient cause is shown.

Pre-deposit requirements should be checked based on the nature of the order and portal-generated liability. In demand-related appeals, Section 107 requires payment of admitted dues and 10% of remaining tax in dispute.

For appeal to GSTAT, Section 112 provides a 3-month appeal window from communication of the order, or the notified date if later. It also refers to additional pre-deposit for tax in dispute where applicable.

How to track GST refund status

1. Log in to the GST portal.
2. Go to Services > Refunds > Track Application Status.
3. Enter ARN or select the financial year.
4. Check the latest status and download available orders or notices.

Common GST refund mistakes to avoid

1. Not matching your refund claim with your returns

    Make sure the numbers in your refund application match your GSTR-1, GSTR-3B, shipping bills, books, and ledgers. If there are mismatches, your claim can get delayed or you might receive an RFD-03 notice.

2. Using the wrong formula for inverted duty refunds

   Don’t use outdated or simplified formulas. Rule 89(5) has its own calculation method, and you shouldn’t include input service ITC in Net ITC for these refunds.

3. Including blocked ITC

   Double-check that you’re not adding ITC that’s blocked under Section 17(5). If you do, your refund could be rejected or face extra scrutiny.

4. Assuming all refunds above ₹2 lakh need a CA certificate

   Not every refund over ₹2 lakh needs a certificate from a CA or cost accountant. Rule 89 has clear exceptions, so only attach a certificate if the law or portal asks for it.

5. Forgetting FIRC/BRC for service exports

   If you export services, you need to show proof that you got paid in foreign currency. Without this, the officer may doubt whether your export qualifies for a refund.

6. Not checking if your bank account is validated

   Refunds only go to the eligible bank account listed on the portal. If there’s a name mismatch, inactive account, or the account isn’t validated, your refund could get stuck.

7. Ignoring RFD-08 notices

   If you get a show cause notice (RFD-08), reply to each point with supporting documents. Clearly explain your refund category, calculations, and why you’re eligible.

Conclusion

GST refund is an important relief mechanism for taxpayers who have paid excess tax, accumulated eligible ITC , exported goods or services, supplied to SEZ units, or become entitled to refund through an order or appeal. However, the refund process is highly document-driven. A small mismatch between returns, invoices, ITC records, shipping bill details, bank account information, or refund statements can delay the claim or lead to a deficiency memo.

Before filing a refund application, taxpayers should identify the correct refund category, apply the right formula, check the applicable time limit, reconcile GST returns with books, and keep all supporting documents ready. Exporters should also verify LUT compliance, ICEGATE data, shipping bill details, and foreign currency realisation documents where applicable. 

A well-prepared refund application reduces follow-ups with the department and improves the chances of faster processing. For businesses that regularly deal with exports, inverted duty structure, SEZ supplies, or excess ITC, using proper GST accounting and reconciliation practices can make the refund process much smoother and help avoid avoidable working capital blockage.