GST ACT — SECTION 54

Section 54 CGST Act — GST Refund Rules, Time Limit, RFD-01 & ITC Refund

Section 54 is the main refund provision under the CGST Act. This guide starts with a simple explanation of what a GST refund is and then goes deep into the legal framework: who can claim, the two-year time limit, relevant dates, export refunds, LUT, unutilised ITC, inverted duty structure, unjust enrichment, provisional refunds, withheld refunds, interest and practical documentation.

2 YearsGeneral application period from the relevant date
RFD-01Electronic refund application route for many claims
ExportsZero-rated supplies form a major refund category
ITC RefundAllowed only in specifically permitted cases

1. Why Section 54 matters

If someone searches “GST refund”, “Section 54 GST refund time limit”, “how to claim GST refund”, “RFD-01”, “refund of unutilised ITC”, “GST export refund” or “inverted duty refund”, Section 54 is one of the first provisions to understand.

Section 54 does not say that every amount lying in a GST ledger can simply be withdrawn. Instead, it creates a controlled refund framework. First identify the type of refund, then identify the relevant date, then check eligibility, documentation, time limit, unjust-enrichment requirements and the applicable Rules.

Simple formula: Refund is not merely “money available in GST portal”. It is an amount that the law specifically permits the Government to return after the prescribed conditions are satisfied.

2. Section 54 in very simple language

Suppose a business has paid more GST than it ultimately needs to bear, or has accumulated eligible ITC in a situation where the law allows that ITC to be refunded.

The business may be able to ask the Government to return the eligible amount.

But the Government does not automatically refund it. The business generally has to:

  1. identify the correct refund category;
  2. calculate the amount correctly;
  3. file the application within the statutory time;
  4. submit supporting documents;
  5. answer any deficiency or clarification request; and
  6. prove that the refund is legally admissible and, where relevant, has not resulted in unjust enrichment.
The most important question is not “How much money is in my GST account?” but “Under which clause of Section 54 am I entitled to a refund?”

3. What is a GST refund?

Section 54 defines the refund framework broadly. The explanation to the section includes refunds of tax paid on zero-rated supplies, tax paid on inputs/input services used in zero-rated supplies, tax on deemed exports and refund of unutilised ITC as provided under Section 54(3).

Therefore, “refund” under GST is wider than simply asking for excess cash deposited in the portal.

SituationPossible refund route
Export without payment of IGSTRefund of eligible unutilised ITC.
Export with payment of IGSTRefund of eligible IGST paid on zero-rated supply, subject to the applicable framework.
Inverted duty structureRefund of eligible accumulated ITC under Section 54(3).
Excess tax/paymentRefund may be available under Section 54(1), subject to conditions.
Other notified/specified casesExamine the relevant clause, Rule and notification.

4. Who can claim?

Section 54 begins with “any person” claiming refund of tax and interest, if any, paid on such tax or any other amount paid by him.

This broad wording is then controlled by the specific refund category and procedure. A registered taxpayer is not automatically entitled to every type of refund, and an unregistered person may have a refund route in specified circumstances.

5. Section 54 statutory structure

ProvisionEasy meaning
54(1)General refund application and two-year limitation from relevant date.
54(2)Special refund timing for notified persons such as specified foreign missions/organisations and related classes.
54(3)Refund of unutilised ITC in specifically permitted cases.
54(4)Application requirements and prescribed documents.
54(5)Proper officer may order refund where satisfied.
54(6)Provisional refund framework for eligible zero-rated supplies and related developments.
54(7)Refund order/payment timing framework.
54(8)Cases where refund is paid to the applicant instead of being credited to the Consumer Welfare Fund.
54(9)Refund paid from the Consumer Welfare Fund in specified cases.
54(10)Withholding of refund in specified default situations.
54(11)Withholding where proceedings are pending and recovery may be affected.
54(12)Refund adjustment/credit mechanisms.
54(13)Refund application/amount consequences where relevant conditions are not met.
54(14)Restriction on certain low-value refund applications, subject to the statutory threshold and later amendments.
54(15)Specific refund restriction relating to export duty/zero-rated goods, where applicable under the current law.

The exact operative wording of each sub-section should be checked for the relevant tax period because Section 54 has undergone several amendments and some proposed changes have been implemented prospectively or remain subject to commencement.

6. Two-year time limit

The general rule under Section 54(1) is that an application for refund should be made before expiry of two years from the relevant date.

Two years does not mean two years from the date you notice the excess. It means two years from the legally defined relevant date applicable to that refund category.

Practical warning: Missing the limitation period can destroy an otherwise valid refund claim. Always identify the relevant date before preparing the calculation.

7. What is the relevant date?

“Relevant date” changes depending on the type of refund. Section 54 contains an extensive explanation covering different situations.

Refund situationRelevant-date concept
Goods exported out of India by sea/airLinked to the date on which the ship/aircraft carrying the goods leaves India.
Goods exported by landLinked to the date the goods pass the frontier.
Goods exported by postLinked to dispatch by the concerned postal authority.
Services exportedLinked to receipt of payment in convertible foreign exchange/INR where permitted, or invoice issue where payment was received in advance, subject to the statutory wording.
Deemed exportsLinked to the relevant return period in which the supply is made, subject to the applicable explanation.
Inverted duty structureLinked to the end of the financial year in which the claim arises under the applicable rule/framework.
Other refundsRelevant date depends on the specific clause and facts.

8. Main refund categories

Exports

Zero-rated supplies of goods/services can create refund opportunities under the IGST/CGST framework.

Inverted duty

Eligible unutilised ITC may accumulate where input tax rates are higher than output tax rates, subject to exclusions.

Excess payment

Tax or other amounts paid in excess may be refundable subject to the law.

Deemed exports

Specified supplies treated as deemed exports can have a refund route under the applicable framework.

Special categories

Notified entities such as specified international organisations can have special refund procedures.

Other specified cases

Always examine the exact provision, Rules and notification before filing.

9. Export refund

Exports are one of the most important Section 54 refund areas because exports are generally zero-rated supplies under the IGST Act.

There are two broad commercial routes:

RouteBasic concept
Export with payment of IGSTIGST is paid on the export and the eligible IGST refund mechanism applies.
Export without payment of IGST under LUT/Bond frameworkNo IGST is paid on the export; eligible unutilised ITC can be claimed as refund subject to Section 54 and Rule 89.

CBIC/GST Council explanatory material confirms that Section 54 covers refunds relating to zero-rated supplies and unutilised ITC. citeturn0search9

10. Export under LUT without IGST

Under the LUT route, the exporter does not pay IGST on the zero-rated export supply. Instead, eligible ITC may accumulate.

The exporter can claim refund of the eligible unutilised ITC under Section 54(3), subject to the statutory formula, documentary requirements and restrictions.

Simple example: An exporter buys taxable inputs carrying GST and exports finished goods under LUT without charging IGST. If the eligible credit accumulates and the statutory conditions are satisfied, the exporter may claim the permitted unutilised-ITC refund.

11. Export with payment of IGST

Under the IGST-paid export route, the exporter pays IGST on the zero-rated supply and seeks refund under the applicable export-refund mechanism.

This route should not be mixed up with the LUT route. The calculation, data validation, shipping-bill/export-document linkage and portal process can differ.

Always reconcile the export invoice, shipping bill, GSTR-1, GSTR-3B, tax payment and bank realisation/export documentation.

12. Unutilised ITC refund

Section 54(3) starts with a general principle: a registered person may claim refund of unutilised ITC at the end of a tax period, but only in the cases permitted by the provisos.

The two major statutory categories are:

  1. zero-rated supplies made without payment of tax; and
  2. inverted duty structure, where credit accumulates because the rate of tax on inputs is higher than the rate on output supplies, subject to statutory exclusions/notified restrictions.

CBIC/GST Council material expressly reproduces this Section 54(3) framework. citeturn0search4

13. Inverted duty structure

“Inverted duty” sounds complicated, but the basic idea is simple:

GST rate on inputs > GST rate on output → ITC can accumulate → refund may be available if Section 54(3) permits it

Example: a manufacturer buys inputs taxed at a higher rate but sells the finished product at a lower rate. ITC can build up because more tax is entering the credit ledger than is being discharged through output tax.

However, not every accumulation qualifies for refund. Section 54(3) contains exclusions and the Government can notify supplies for which inverted-duty refund is not available.

14. When ITC refund is not allowed

Section 54(3) is a restricted refund provision, not a general withdrawal facility.

Important statutory restrictions include:

  • zero-rated supplies must fit the applicable route;
  • export-duty situations can restrict refund;
  • specified goods/services can be excluded from inverted-duty refund through notification;
  • drawback/refund interactions can restrict overlapping claims;
  • the claim must satisfy the prescribed formula and documentary requirements.

The GST Council has specifically considered and notified restrictions for certain supplies under Section 54(3). For example, the 52nd Council agenda records the restriction on refund of unutilised ITC for specified services covered by Notification 15/2017-Central Tax (Rate). citeturn0search4

15. Refund application process

A practical refund claim normally follows this sequence:

  1. Identify the refund category.
  2. Determine the relevant date.
  3. Confirm the two-year limitation.
  4. Calculate the eligible refund.
  5. Collect invoices, returns, export documents and other evidence.
  6. File the prescribed electronic refund application.
  7. Respond to acknowledgement/deficiency/scrutiny.
  8. Obtain provisional/final sanction as applicable.
  9. Reconcile the amount received with the refund order.

For many refund categories, the electronic application is made in FORM GST RFD-01 under the prescribed Rules.

16. RFD-01 and documents

The exact documents depend on the refund category. Typical evidence can include:

Tax invoices
Purchase/supply invoices supporting the claim.
GSTR-1/GSTR-3B
Return data supporting turnover, tax and ITC.
Export documents
Shipping bills, export invoices, LUT and relevant realisation/payment evidence.
ITC reconciliation
Electronic credit ledger and purchase records.
Declarations
Unjust-enrichment declarations/certificates where applicable.
Bank details
Correct bank account information for refund payment.

Rule 89 is the central procedural rule for many refund applications. The documentation must match the refund category rather than simply uploading every available document.

17. Acknowledgement and scrutiny

After filing, the application goes through the prescribed acknowledgement and scrutiny process.

If the application is complete, the officer can proceed under the refund rules. If deficiencies exist, a deficiency memo may be issued and the applicant may need to file a fresh application after correcting the defects, depending on the applicable procedure.

Practical lesson: A refund application should be treated like an audit file. The calculation should be traceable from the claim amount back to invoices, returns and the electronic ledger.

18. Provisional refund

Section 54(6) provides a provisional-refund framework for eligible refund claims relating to zero-rated supplies, subject to the statutory conditions and exclusions.

The law and Rules have evolved further toward risk-based refund processing. In 2025, the GST Council recommended risk-based provisional sanction for inverted-duty refunds and the Government decided that low-risk applications could receive provisional refund treatment under the applicable instructions from 1 November 2025. citeturn0search7turn0search8

Important: “Provisional” does not mean “final acceptance of every figure”. The final refund can still be scrutinised and adjusted according to the law.

19. Final sanction

The proper officer examines the claim and, where satisfied, passes the appropriate refund order.

The final amount can be lower than the amount originally claimed if part of the claim is found inadmissible.

Therefore, the finance team should reconcile:

  • amount originally claimed;
  • amount provisionally sanctioned, if any;
  • amount finally sanctioned;
  • amount rejected;
  • interest, if applicable; and
  • amount actually credited to the bank account.

20. Unjust enrichment

“Unjust enrichment” is one of the most important concepts in refund law.

In simple terms, the Government does not want a person to receive a refund from the Government if that person has already recovered the same tax amount from another person.

For many refunds, the officer therefore examines whether the tax burden was passed on to another person.

Example: If a supplier collected GST from its customer as part of the price, it generally cannot simply obtain a refund and keep the customer's tax amount as its own benefit.

21. Consumer Welfare Fund

Where the law treats a refund amount as having been passed on to another person and the applicant cannot establish the required conditions for direct payment, the amount can be credited to the Consumer Welfare Fund rather than paid to the applicant.

Section 54(8) lists specified situations where refund is instead paid to the applicant. This is why refund entitlement and unjust-enrichment analysis must be considered together.

22. Withholding refund

Section 54 also contains provisions allowing refund to be withheld in specified circumstances.

For example, where a registered person has defaulted in furnishing a return or has an unpaid tax, interest or penalty that is not stayed by the competent authority, the law can permit withholding/adjustment of refund in the circumstances specified in Section 54(10).

Section 54(11) separately deals with situations involving pending proceedings where payment of refund may adversely affect recovery.

23. Interest on delayed refund

Section 56 deals with interest where a refund becomes due and is not paid within the statutory period.

Therefore, Section 54 and Section 56 should normally be read together when analysing a delayed refund.

Do not assume that every day between application and payment automatically generates interest. The statutory trigger, relevant period and applicable conditions must be checked.

24. ₹1,000 threshold

Section 54 contains a minimum-threshold rule under which refund is generally not paid where the amount is less than ₹1,000, subject to the statutory wording and applicable category.

This should be considered before spending substantial administrative effort preparing a very small refund claim.

GST Council/official material also refers to the ₹1,000 threshold in refund guidance. citeturn0search10

25. Export-specific developments

Export refund law has continued to evolve.

The 53rd GST Council examined an amendment to Section 54 relating to export duty and refund of unutilised ITC. The policy concern was that refund should not be available where zero-rated exported goods are subject to export duty in the circumstances covered by the law. citeturn0search2

The 2025 GST Council also recommended amendment of Section 54(14) to remove the threshold restriction for refunds arising from low-value export consignments, particularly exports through courier/postal channels. This should be distinguished from changes that are already operative versus recommendations/amendments requiring commencement. citeturn0search7

26. Refunds for unregistered persons

Section 54 is not restricted in every situation to ordinary registered taxpayers.

GST law has developed procedures for certain refund claims by unregistered persons, including specified cases where an unregistered buyer may seek refund. The GST Council/CBIC framework provides for temporary registration and other verification requirements in such cases.

For example, official GST Council material records a procedure under which an unregistered person claiming a specified refund obtains temporary registration using PAN and undergoes the prescribed authentication/process. citeturn0search1

27. Construction and infrastructure examples

Example — Export of construction equipment

An infrastructure company exports machinery under LUT. GST is paid on eligible inputs and services. If the export is zero-rated without payment of IGST and the statutory conditions are satisfied, eligible unutilised ITC can potentially be claimed as refund.

Example — Inverted rate on project-related products

A manufacturer supplies a finished product at a lower GST rate while qualifying inputs bear a higher GST rate. If ITC accumulates and the supply is not excluded from the inverted-duty refund framework, Section 54(3) may permit refund.

Example — Excess tax on RA invoice

A contractor discovers that excess GST was paid because of an invoicing error. The correct route may involve adjustment/credit note provisions rather than immediately filing a Section 54 refund. The facts and correction mechanism must be examined first.

Example — Export of services

A consulting/construction-design company provides qualifying export services under LUT and accumulates ITC. It must establish export-of-service conditions and follow the Section 54/Rule 89 refund procedure.

28. Detailed numerical examples

Example 1 — Export under LUT

Eligible ITC accumulated during the refund period = ₹10 lakh. Eligible zero-rated turnover and adjusted total turnover are used in the Rule 89 formula. The refund is not automatically ₹10 lakh; the prescribed formula determines the admissible amount.

Example 2 — Inverted duty

Eligible ITC accumulated = ₹6 lakh. Output tax and turnover are considered under the statutory formula. The refund is the eligible amount calculated under Rule 89, not simply the closing ITC balance.

Example 3 — Excess payment

A taxpayer pays ₹2 lakh more tax than required. The taxpayer should first determine whether the excess can be corrected through the return/credit-note mechanism. If a Section 54 refund is appropriate, the two-year relevant-date test applies.

Example 4 — ₹900 claim

Where the statutory ₹1,000 minimum applies, a ₹900 refund claim would generally not be payable.

Example 5 — Export with IGST

IGST paid on eligible export supply = ₹4 lakh. The export documents and return data must support the refund route.

Example 6 — Delayed refund

A valid refund becomes payable but payment is delayed beyond the statutory period. Section 56 should be examined for interest.

Example 7 — Unjust enrichment

A supplier collects ₹1 lakh tax from its customer and later claims that amount as refund. The officer examines whether the tax burden was passed on before deciding whether direct refund can be paid.

Example 8 — Multiple refund categories

A taxpayer has both export-related accumulated ITC and excess cash payment. These should be treated as separate refund categories with separate relevant-date and documentation analysis.

Example 9 — Previous outstanding tax

A taxpayer has a refund claim but also has unpaid tax/interest/penalty not stayed by the competent authority. Section 54(10) consequences must be examined before assuming immediate payment.

Example 10 — Low-risk provisional refund

A qualifying low-risk refund application falls within the applicable risk-based provisional framework. The applicant may receive provisional sanction under the current instructions, subject to the final statutory scrutiny.

29. Accounting treatment

Refund accounting should distinguish between claim receivable, refund sanctioned and cash actually received.

StageRecommended control
Refund eligiblePrepare claim calculation and supporting schedule.
Application filedTrack RFD-01 ARN and claim amount.
Provisional refundRecord receipt and maintain linkage to the claim.
Final orderReconcile sanctioned/rejected amount.
Bank receiptMatch actual credit with refund order.

30. Internal controls

ControlWhy it matters
Refund-category checklistPrevents filing under the wrong provision.
Relevant-date trackerPrevents expiry of the two-year limitation.
ITC reconciliationSupports refund calculation.
Invoice-level testingLinks claim to source documents.
Export reconciliationMatches invoices, shipping/export data and returns.
Unjust-enrichment fileSupports direct refund entitlement.
Previous-liability checkIdentifies possible withholding/adjustment.
Refund ageing reportTracks applications, orders and receipts.

31. Legislative timeline

PeriodDevelopment
1 July 2017Section 54 became part of the CGST refund framework.
2017 onwardRules and notifications established electronic refund application, export refund and inverted-duty procedures.
2020–2022Refund procedures, relevant-date issues and inverted-duty exclusions continued to be clarified through Rules, circulars and GST Council recommendations.
2023–2024GST Council considered export-duty restrictions and harmonisation of zero-rated refund provisions.
2024Notification 12/2024-Central Tax introduced Rule 89(1B) for refund of additional IGST paid on account of post-export price increases in specified circumstances. citeturn0search10
2025Risk-based provisional refund treatment for low-risk applications was operationalised from 1 November 2025 under the Government's instructions, while legislative amendments to Section 54(6) were recommended. citeturn0search7turn0search8
CurrentRefund claims remain highly rule-driven: Section 54 must be read with Rule 89 and the applicable refund-specific Rules, notifications and circulars.

32. GST Council developments

Inverted-duty refund restrictions

The GST Council has repeatedly considered which supplies should qualify for refund of accumulated ITC under Section 54(3). The 52nd Council material records Notification 15/2017-Central Tax (Rate) restricting refund for specified services. citeturn0search4

Export-duty issue

The 53rd Council examined amendments to prevent refund of unutilised ITC where zero-rated goods are subject to export duty in the circumstances covered by the proposed amendment. citeturn0search2

Low-value export consignments

The 56th Council recommended removing the threshold restriction for refunds relating to exports with payment of tax, particularly to support small courier/postal exporters. This recommendation must be distinguished from the law actually in force for the relevant date. citeturn0search7

Risk-based refunds

The 56th Council also recommended a risk-based mechanism for provisional refund of inverted-duty claims, and Government instructions operationalised low-risk provisional processing from 1 November 2025 pending requisite statutory amendment. citeturn0search7turn0search8

33. Legal authorities to check

This article intentionally does not embed external reference hyperlinks.

AuthorityPurpose
Section 54(1)General refund application and two-year limitation.
Section 54(2)Special refund category/time limit.
Section 54(3)Unutilised ITC refund.
Section 54(4)Application and supporting evidence.
Section 54(6)Provisional refund framework.
Section 54(8)Direct payment cases/not Consumer Welfare Fund.
Section 54(10)/(11)Withholding/adjustment of refunds.
Section 54(14)Minimum refund threshold framework.
Section 54(15)Export-duty related refund restriction in the current framework.
Section 56Interest on delayed refunds.
Rule 89Refund application, calculation and supporting documents.
Rule 90Acknowledgement/scrutiny framework.
Rule 91Provisional refund.
Rule 92Order/sanction/rejection of refund.
Rule 93Order regarding Consumer Welfare Fund/credit.

34. Professional workflow

1. Identify category
Export, inverted duty, excess payment, deemed export or other specified claim.
2. Identify relevant date
Do not calculate the limitation from the application date.
3. Test eligibility
Check Section 54 and applicable notification.
4. Reconcile ITC
Match books, GSTR-2B/ITC records, GSTR-3B and electronic credit ledger.
5. Calculate Rule 89 amount
Use the correct formula for the refund category.
6. Test unjust enrichment
Prepare CA certificate/declaration where required.
7. Prepare documents
Invoice/export/payment/return evidence.
8. File RFD-01
Track ARN and acknowledgement.
9. Handle deficiency
Respond quickly and preserve the complete file.
10. Reconcile sanction
Match provisional/final order with bank receipt.

35. Common mistakes

  • Thinking every excess ITC balance is refundable.
  • Missing the two-year limitation.
  • Using the wrong relevant date.
  • Applying the inverted-duty formula without checking exclusions.
  • Claiming export refund without reconciling shipping/export records.
  • Claiming the same tax through overlapping refund routes.
  • Ignoring unjust enrichment.
  • Ignoring outstanding tax/interest/penalty before expecting payment.
  • Using the closing ITC balance as the refund amount without applying Rule 89.
  • Failing to reconcile RFD-01 with the electronic credit ledger.
  • Treating provisional refund as final acceptance.
  • Using historical refund rules for a current claim without checking amendments.

36. Section 54 GST FAQs

What is Section 54 of the CGST Act?

Section 54 is the principal CGST refund provision covering general tax refunds, zero-rated supplies, unutilised ITC and specified refund categories.

What is the GST refund time limit?

The general Section 54(1) limit is two years from the relevant date, subject to the special rules for different refund categories.

What is the relevant date for GST refund?

It depends on the refund category. Section 54 contains different relevant-date rules for exports, services, deemed exports, inverted duty and other situations.

What is RFD-01?

RFD-01 is the prescribed electronic application route used for many GST refund claims under the refund Rules.

Can I claim refund of unutilised ITC?

Yes, but only in the categories permitted by Section 54(3), principally zero-rated supplies without payment of tax and qualifying inverted-duty accumulation, subject to restrictions.

Can export under LUT get GST refund?

Yes. Eligible unutilised ITC can be claimed under the zero-rated supply refund framework, subject to the statutory formula and conditions.

Can I claim refund of ITC for domestic taxable sales?

Normally not merely because ITC is accumulating. Section 54(3) restricts ITC refund to specified categories.

What is inverted duty structure?

It generally means input tax rates are higher than output tax rates, causing eligible ITC to accumulate. Refund is available only subject to Section 54(3), notifications and Rule 89.

What is unjust enrichment?

It is the principle that a person should not receive a refund if the tax burden has already been passed on to another person, subject to the statutory exceptions.

What happens if GST refund is less than ₹1,000?

The statutory minimum threshold generally prevents payment of such a refund where applicable.

Can GST refund be withheld?

Yes, Section 54(10) and 54(11) provide for withholding/adjustment in specified circumstances.

Do I get interest on delayed GST refund?

Potentially yes under Section 56, subject to the statutory conditions and period for which interest is payable.

Is provisional refund final?

No. Provisional sanction is subject to the final refund process and applicable scrutiny.

Can an unregistered person claim GST refund?

Yes in specified circumstances, subject to the applicable statutory and procedural framework.

Can I claim refund and credit-note adjustment for the same tax?

Care is required. The correct correction/refund route depends on the nature of the error and the applicable provisions. Double recovery is not permitted.

Is every export eligible for refund?

Exports are zero-rated, but the particular refund route, documentation, export realisation and statutory restrictions must still be satisfied.

38. Key takeaways

  • Section 54 is the main GST refund provision.
  • The general refund application period is two years from the legally defined relevant date.
  • Different refund categories have different relevant-date rules.
  • Unutilised ITC is refundable only in specifically permitted situations.
  • Zero-rated exports and qualifying inverted-duty accumulation are the major ITC-refund categories.
  • Rule 89 is essential for calculating and documenting many refund claims.
  • Unjust enrichment must be considered where the law requires it.
  • Refunds can be withheld or adjusted where the statutory conditions are satisfied.
  • Delayed refunds can attract interest under Section 56.
  • Provisional refund is not the same as final refund sanction.
  • Always distinguish current operative law from Council recommendations or amendments awaiting commencement.

Reference policy: This article intentionally does not embed external reference hyperlinks. Legal authorities are identified by Act section, Rule, notification, circular and GST Council material.

Disclaimer: This guide is written in simple language for practical educational use. Refund eligibility is highly fact-specific. Before filing an actual claim, verify the law, Rules, relevant notifications/circulars and the procedure applicable to the exact tax period and refund category.