Zero-Rated Supplies, Imports, Exports and Refunds

Introduction and Context

Goods and Services Tax (GST) attempts to tax consumption rather than production. Accordingly, exports and supplies connected with international trade are generally relieved from domestic GST, while imports are taxed so that imported goods and services do not receive an unintended advantage over domestic supplies. The legal design must therefore balance three objectives: preserving destination-based taxation, preventing revenue leakage, and ensuring that genuine exporters receive timely refunds.

Under the Indian GST framework, the central concepts in this chapter are zero-rated supply, export of goods and services, supplies to Special Economic Zones (SEZs), Letter of Undertaking (LUT), deemed exports, import taxation, and refund administration. The statutory position may change through amendments, notifications, circulars and judicial decisions. A tax professional must therefore verify the law applicable to the relevant tax period rather than relying only on general principles.

Learning Objectives

After studying this chapter, the learner should be able to:

1. Distinguish zero-rated supplies from exempt, nil-rated and non-GST supplies.
2. Advise exporters and SEZ suppliers on tax-payment options and documentation.
3. Explain LUT requirements and the consequences of non-compliance.
4. Analyse deemed exports and distinguish them from exports outside India.
5. Explain the GST treatment of imports of goods and services.
6. Determine broad refund eligibility, including inverted duty situations.
7. Apply the doctrine of unjust enrichment and identify documentary risks.
8. Design a practical refund-control and compliance system.

1. The Concept of Zero-Rated Supply

A zero-rated supply is a taxable supply on which the effective output tax burden is zero, while the law generally preserves credit for eligible input tax. This is different from an exempt supply, for which input tax credit is ordinarily restricted or unavailable to the extent prescribed by law.

Under the Integrated Goods and Services Tax Act, zero-rated supply principally includes:

• export of goods or services; and
• supply of goods or services, or both, to a Special Economic Zone developer or an SEZ unit for authorised operations.

The commercial significance is that an exporter may normally choose between:

1. supplying under a valid LUT or bond without payment of integrated tax and claiming refund of accumulated eligible input tax credit; or
2. supplying on payment of integrated tax and claiming refund of the integrated tax paid.

The availability of a route depends on statutory conditions, notifications, procedural rules and the taxpayer’s facts. A professional adviser should not treat the choice as merely a cash-flow preference. It affects working capital, documentation, reconciliation and litigation exposure.

Zero-rated, exempt and non-GST supplies

Zero-rating does not mean that every transaction involving a foreign party qualifies as an export. Place-of-supply rules, supplier location, recipient location, movement of goods, payment conditions and other statutory requirements must be examined.

2. Exports of Goods and Services

2.1 Export of goods

Export of goods generally requires that:

• the supplier is located in India;
• the recipient is located outside India;
• the goods move from India to a place outside India; and
• the payment and documentation requirements prescribed under law are satisfied.

The physical movement of goods is central. A sale to a foreign customer does not automatically become an export if the goods remain in India or are delivered to an unrelated domestic location, unless a specific statutory provision applies.

Important evidence commonly includes the tax invoice, shipping bill or bill of export, export general manifest or equivalent customs evidence, transport documents, foreign remittance evidence and GST return reporting. The invoice should contain the appropriate endorsement, such as supply for export under LUT without payment of integrated tax or supply for export on payment of integrated tax.

2.2 Export of services

An export of service generally requires satisfaction of all statutory conditions, including:

• the supplier is located in India;
• the recipient is located outside India;
• the place of supply is outside India;
• payment is received by the supplier in convertible foreign exchange or in another permitted manner; and
• the supplier and recipient are not merely establishments of the same person, subject to the law applicable to the relevant period.

The place-of-supply analysis is often decisive. Services connected with immovable property, performance-based services, intermediary services and services supplied to establishments may have special rules. A contract describing a transaction as an “export service” is not conclusive.

For example, an Indian marketing company may provide services to an overseas client. If it acts as an intermediary arranging supplies between the foreign client and another supplier, the statutory place-of-supply rule may prevent the transaction from qualifying as an export. The agreement, actual functions, risk allocation, invoicing and flow of consideration must be analysed together.

2.3 Foreign exchange and payment evidence

Receipt of foreign currency is important but not sufficient by itself. The adviser should reconcile:

• invoice value;
• contract and purchase order;
• bank realisation or permitted settlement evidence;
• foreign exchange conversion rate;
• GST return reporting; and
• credit claimed or refund requested.

Differences may arise from bank charges, credit notes, advance payments, exchange fluctuations or settlement through permitted mechanisms. These differences should be documented rather than ignored.

3. Supplies to Special Economic Zones

A supply to an SEZ unit or developer is zero-rated when the statutory conditions are met and the supply is for authorised operations. Two concepts must be separated:

• the recipient’s status as an SEZ unit or developer; and
• the use of the goods or services for authorised operations.

An SEZ endorsement, specified officer’s endorsement or other prescribed evidence is therefore highly significant. A supplier should obtain and retain proof that the recipient is an eligible SEZ entity and that the goods or services were received for authorised operations.

Practical control checklist for SEZ supplies

1. Verify the recipient’s GSTIN and SEZ status.
2. Confirm the exact authorised operation.
3. Issue an invoice containing the correct zero-rated endorsement.
4. Report the invoice consistently in GST returns.
5. Obtain proof of receipt and SEZ endorsement.
6. Reconcile the supply with the refund claim.
7. Track rejected, cancelled or partially endorsed invoices.

A supplier should be cautious where an SEZ customer requests zero-rating for general corporate, personal or non-authorised expenditure. The tax treatment should follow the statutory requirement, not merely the customer’s commercial request.

4. Letter of Undertaking

An LUT is a prescribed undertaking enabling an eligible registered person to supply goods or services for export, or to an SEZ, without payment of integrated tax, subject to the conditions of the GST law. It is generally preferred by exporters because it avoids blocking funds in output tax and waiting for a payment-based refund.

Main operational features

• The LUT must be furnished in the prescribed form and manner before using the facility for the relevant period.
• It is normally valid for the financial year, subject to the applicable rules.
• The exporter must fulfil the prescribed export conditions within the stipulated period.
• Failure to export or otherwise comply can create tax, interest and recovery exposure.
• A person who is ineligible for LUT may need to use a bond or another permitted mechanism.

The LUT is not a substitute for export evidence. A valid LUT does not cure failure to satisfy the definition of export, incorrect place-of-supply treatment, absence of required payment evidence or inaccurate return reporting.

A professional adviser should maintain a compliance calendar for LUT renewal, export-realisation monitoring, ageing of open export invoices and escalation of exceptions.

5. Deemed Exports

Deemed exports are domestic supplies notified by the Government as deemed exports. They are not exports in the ordinary sense because the goods do not necessarily leave India. This distinction is fundamental.

Deemed exports may receive specified benefits, including refund mechanisms, subject to prescribed conditions. They do not automatically qualify for every benefit available to physical exports. The supplier must verify whether the transaction, recipient, goods, documentation and payment route fall within the relevant notification.

Typical evidence may include:

• tax invoice;
• proof of receipt by the notified recipient;
• recipient’s declaration or undertaking, where required;
• evidence that the recipient has not claimed a conflicting benefit;
• bank payment evidence; and
• prescribed statements or certificates.

A deemed export claim should therefore begin with the notification identifying the category, not with a general assumption that a government-related or export-oriented transaction is a deemed export.

6. Importation under GST

6.1 Import of goods

Import of goods into India is subject to customs law and integrated tax under the applicable customs framework. Customs duty, social welfare surcharge, integrated tax and other applicable levies may arise. The taxable value for customs purposes is determined under customs valuation rules, and the integrated tax is calculated in accordance with the applicable legal provisions.

A simplified representation for an import transaction is:

Here, “taxable import value” is the value determined under customs law, including legally includible additions; it is not necessarily identical to the supplier’s invoice value. The formula applies only after the correct customs value and rate have been determined.

Eligible integrated tax paid on import of goods may generally be available as input tax credit, subject to credit conditions, business use, documentation and restrictions. The bill of entry is a critical document. Importers should reconcile bill-of-entry data with the GST electronic credit ledger and purchase records.

6.2 Import of services

Import of services may be taxed under the reverse charge mechanism where the statutory conditions are met. Broadly, the recipient in India may be required to self-assess and pay integrated tax on the imported service.

The analysis requires examination of:

• supplier location;
• recipient location;
• place of supply;
• whether consideration exists;
• whether the parties are related or distinct persons; and
• whether an exemption or special rule applies.

The recipient should generate appropriate accounting and tax records, discharge tax within the prescribed period, and evaluate eligibility for input tax credit. A foreign currency invoice alone does not establish an import of service; the statutory place-of-supply and recipient tests remain essential.

7. Refund Framework

Refunds may arise in several situations, including:

• tax paid on zero-rated supplies;
• unutilised input tax credit on zero-rated supplies under LUT or bond;
• unutilised credit caused by an inverted duty structure;
• tax paid on supplies subsequently found not to have been made; and
• other specified categories under the GST law.

The applicant must identify the correct statutory category. A refund application may fail if the claimant uses the wrong category, claims an amount outside the relevant period or includes ineligible credit.

7.1 Refund of tax paid on zero-rated supplies

Where integrated tax is paid on eligible zero-rated supplies, the refund normally relates to the tax actually paid, subject to statutory conditions and documentary verification.

7.2 Refund of accumulated input tax credit

For supplies made under LUT or bond, the refund is generally based on the proportion of zero-rated turnover to adjusted total turnover and the relevant eligible input tax credit. A commonly used statutory formula is:

The terms must be interpreted according to the applicable GST rules:

• Turnover of zero-rated supply means the qualifying export or SEZ turnover computed under the prescribed rule.
• Net ITC means eligible input tax credit for the relevant period, excluding categories specifically excluded by law, such as capital goods credit where the rule so provides.
• Adjusted total turnover means the prescribed total turnover for the relevant period, excluding specified items such as exempt turnover or non-GST turnover where required by the rule.

The formula is not a general accounting identity. It applies only to the statutory refund category and must be read with the definitions, exclusions, period rules and caps prescribed for the relevant tax period.

#### Illustrative calculation

Assume, purely for illustration, that during a refund period:

• zero-rated turnover = ₹60 lakh;
• adjusted total turnover = ₹100 lakh; and
• eligible Net ITC = ₹12 lakh.

Then:

The calculation assumes that all three figures have been computed under the applicable statutory definitions and that no other restriction, deficiency or sanction applies.

7.3 Inverted duty structure

An inverted duty structure arises when the tax rate on inputs is higher than the tax rate on the output supply, causing accumulation of input tax credit. Refund may be available for eligible unutilised credit, subject to statutory exclusions and restrictions.

The adviser should test:

• whether the output is taxable and eligible;
• whether the accumulation results from the rate structure rather than factors such as exports, exempt supplies or deliberate stock accumulation;
• whether the relevant goods or services are excluded by notification;
• whether input and output classifications are correct; and
• whether the refund formula and period conditions are satisfied.

Classification errors are a major risk. A taxpayer cannot create an inverted structure by incorrectly applying a lower rate to output or a higher rate to input.

8. Unjust Enrichment

The doctrine of unjust enrichment prevents a person from receiving a refund where the tax burden has already been passed on to another person. In practical terms, the applicant must demonstrate that the refund amount has not been recovered from the customer through the price or otherwise.

Evidence may include:

• tax invoices and pricing records;
• contracts and price lists;
• ledger extracts;
• credit notes;
• cost-accounting analysis;
• declarations and certificates where appropriate; and
• evidence of treatment in the financial statements.

In some categories, such as certain accumulated-credit refunds, the law may provide different treatment from ordinary tax-paid refunds. The applicable statutory presumption and treatment must be checked carefully.

Unjust enrichment is not defeated merely by showing that the taxpayer has suffered an accounting loss. The question is whether the relevant tax burden was transferred. A strong refund file connects the tax amount to the commercial price and explains why the customer did or did not bear it.

9. Documentation and Evidence Architecture

Refund disputes are frequently evidence disputes. The underlying transaction may be genuine, but inconsistent records can prevent sanction.

Core document set

The same invoice number, taxable value, tax amount and date should appear consistently across the invoice, books, GST returns, shipping bill or SEZ records, and refund statement. Differences should be explained through a reconciliation rather than left for the tax authority to discover.

10. Refund Risk Management

A mature refund process is a controlled cycle rather than a one-time application.

Stage 1: Transaction design

Before supply, classify the transaction, determine the place of supply, confirm eligibility for zero-rating and identify the required endorsement or payment evidence.

Stage 2: Invoice and return controls

Use invoice templates containing correct legal endorsements. Lock key fields where possible and reconcile outward-supply data with GST returns before filing.

Stage 3: Evidence capture

Collect shipping documents, foreign remittance evidence, SEZ endorsements, contracts and recipient declarations as transactions occur. Retrospective collection is slower and less reliable.

Stage 4: Credit validation

Separate eligible input tax credit from blocked credit, capital-goods credit, exempt-use credit and credits belonging to another period. Reconcile purchase registers with GSTR data and the electronic credit ledger.

Stage 5: Refund computation

Document the statutory category, formula, period, turnover figures, Net ITC and exclusions. Have an independent reviewer reproduce the calculation.

Stage 6: Submission and response

Monitor acknowledgement, deficiency memo, notice and sanction. Respond within the prescribed time and preserve proof of submission.

Stage 7: Post-refund review

Record sanctioned, rejected and provisional amounts. Analyse rejection reasons, amend procedures and assess whether any subsequent adjustment or recovery risk exists.

Technology can support this process through invoice-level data matching, optical character recognition for bills of entry, exception dashboards and rule-based validation. Artificial intelligence may identify unusual mismatches, but it should not replace legal analysis or human review. Confidential tax and customer data must be protected through access controls, retention policies and audit trails.

11. Applied Case: Exporter Using LUT and Claiming ITC Refund

This is an illustrative case.

Background

Aster Components Pvt. Ltd., registered in India, manufactures electrical assemblies. It exports goods to customers in Europe and also supplies components to an SEZ unit. It uses an LUT and does not pay integrated tax on these supplies. During one quarter, the company claims refund of accumulated input tax credit.

Problem

The refund application is partly questioned because:

• two shipping bills contain invoice-number differences;
• one SEZ invoice lacks an authorised-operations endorsement;
• the purchase register includes blocked credit relating to employee welfare expenses; and
• the bank realisation amount is lower than the invoice value because of documented bank charges.

Analysis

The shipping-bill mismatch is potentially curable if the customs and GST records can be linked through a documented amendment or explanatory reconciliation. The SEZ invoice requires stronger evidence that the supply was for authorised operations; an SEZ customer’s status alone is insufficient. Blocked credit must be removed from Net ITC. Bank charges should be analysed to determine whether the reduced realisation is commercially and legally explainable rather than treated automatically as short payment.

Assume the corrected figures are:

• eligible zero-rated turnover: ₹80 lakh;
• adjusted total turnover: ₹100 lakh; and
• eligible Net ITC after removing blocked credit: ₹10 lakh.

The provisional formula amount is:

Approach and outcome

Aster prepares an invoice-level reconciliation, obtains corrected SEZ endorsement, removes ineligible credit, attaches the LUT and export evidence, and explains the bank-charge difference. The application is resubmitted with a clear computation sheet and document index. The case demonstrates that refund success depends not only on the arithmetic but also on legal classification, evidence quality and consistency across systems.

Learning points

1. Zero-rated status must be established transaction by transaction.
2. An LUT does not eliminate the need for export proof.
3. Net ITC must be legally filtered, not copied from the ledger without review.
4. Data mismatches should be identified before filing.
5. A reconciliation note can convert an apparent inconsistency into an explainable variance, but it cannot cure an ineligible transaction.

12. Professional, Ethical and Governance Considerations

Tax professionals should distinguish legitimate tax planning from artificial documentation. A supplier should not issue a zero-rated invoice merely because a customer demands it, backdate an LUT, split invoices to manipulate turnover, or include ineligible credits to increase a refund.

Advice should be supported by written assumptions, source documents and a record of the law applicable to the period. Where the law is uncertain, the adviser should communicate the risk, possible interpretations and recommended evidence. Confidentiality, data security and independence are especially important when handling export contracts, bank records and customer information.

Management should assign responsibility for GST classification, export documentation, customs reconciliation, credit validation and refund filing. Internal audit or periodic independent review is valuable for high-volume exporters and businesses with multiple GST registrations.

13. Contemporary Developments and Limitations

GST administration is increasingly data-driven. Customs systems, GST returns, e-invoicing, e-way bills, bank evidence and SEZ records may be compared electronically. This improves detection of duplicate invoices, circular transactions and inflated refund claims, but it also means that small data errors can trigger notices.

Businesses operating across several registrations face additional complexity in allocating common input services and determining the correct turnover for each claim. Cross-border digital services raise continuing questions concerning place of supply, intermediary characterization and establishment relationships. Taxpayers should monitor legislative changes, court decisions, departmental circulars and portal instructions.

No automated checklist can replace a legal conclusion. The essential professional skill is to connect the commercial substance of the transaction with the statutory requirements and a coherent evidence trail.

Chapter Summary

Zero-rated supplies are designed to relieve domestic GST from exports and eligible supplies to SEZs while preserving access to input tax credit through prescribed refund mechanisms. Export classification requires careful analysis of supplier and recipient locations, movement of goods, place of supply, payment and statutory conditions. Supplies to SEZs additionally require proof of authorised operations. An LUT permits eligible supplies without payment of integrated tax but does not replace transaction-level evidence.

Deemed exports are notified domestic supplies and must not be confused with physical exports. Imports of goods attract customs-related integrated tax, while imports of services may be taxed under reverse charge. Refund claims may concern tax paid on zero-rated supplies, accumulated credit or inverted duty structures. The statutory formula for accumulated-credit refunds depends on zero-rated turnover, adjusted total turnover and eligible Net ITC, all of which require legally correct computation.

Unjust enrichment prevents refund of tax already passed to customers. Documentation, reconciliation, classification and timely responses are central to refund risk management. Effective advisers combine legal analysis, accounting controls, customs knowledge, technology-assisted reconciliation and ethical professional judgment.

Key Terms

Zero-rated supply: A qualifying supply receiving zero domestic tax burden with preservation of specified input-tax benefits.

Export of goods: Supply involving movement of goods from India to a place outside India, subject to statutory conditions.

Export of services: A qualifying cross-border service satisfying supplier, recipient, place-of-supply and payment conditions.

Special Economic Zone: A specially regulated area whose eligible supplies and operations receive specified fiscal treatment.

Authorised operations: Operations approved for an SEZ unit or developer under the applicable SEZ framework.

Letter of Undertaking (LUT): Prescribed undertaking enabling eligible zero-rated supplies without payment of integrated tax.

Deemed export: A notified domestic supply treated as deemed export for specified benefits, although goods may not leave India.

Import of goods: Bringing goods into India, generally attracting customs duties and integrated tax.

Import of services: Receipt of qualifying services from a supplier outside India under the statutory place-of-supply framework.

Reverse charge: Mechanism under which the recipient, rather than the supplier, pays tax.

Input tax credit: Credit of eligible GST paid on business inputs, input services or capital goods.

Net ITC: Eligible input tax credit used in the prescribed refund computation after statutory exclusions.

Inverted duty structure: Accumulation of credit because input tax rates exceed output tax rates.

Unjust enrichment: Principle preventing refund where the tax burden has been passed to another person.

Adjusted total turnover: Statutorily defined turnover used in the refund formula.

Shipping bill: Customs document associated with export of goods.

Bill of entry: Customs document used for import clearance and evidence of import tax.

Zero-rated refund: Refund relating to eligible tax paid or accumulated credit on zero-rated supplies.

Tax reconciliation: Structured comparison of invoices, books, returns, customs data and refund claims.

Refund deficiency memo: Communication identifying defects that must be corrected in a refund application.

Review Questions

Short Answer Questions

1. What is the principal difference between a zero-rated supply and an exempt supply?
2. State the main statutory elements of an export of services.
3. Why is authorised-operations evidence important for supplies to SEZs?
4. What is the purpose of an LUT?
5. Explain the doctrine of unjust enrichment in refund administration.

Long Answer Questions

1. Explain the legal and practical framework for exports of goods and services under GST.
2. Discuss the compliance requirements and risks associated with supplies to SEZs and LUT-based supplies.
3. Explain the GST treatment of imports of goods and imports of services.
4. Describe the refund mechanisms for zero-rated supplies and inverted duty structures.
5. Develop a documentation and internal-control framework for a major exporting business.

Analytical / Application Questions

1. An Indian service provider receives payment in foreign currency from a foreign customer, but its actual role is to arrange supplies between the customer and an Indian manufacturer. Analyse whether the supply necessarily qualifies as an export of services.
2. An exporter’s refund application includes eligible credit, blocked credit and credit relating to exempt supplies. Explain how the claim should be reviewed and what evidence should be maintained.
3. An SEZ unit requests zero-rating for services used in a non-authorised administrative activity. Advise the supplier on the legal, documentary and ethical issues before issuing the invoice.

Multiple Choice Questions with Answers

Question 1

Which transaction is principally treated as a zero-rated supply under GST?

A. An export of goods from India satisfying statutory conditions

B. Every sale to a foreign-owned company located in India

C. Every exempt domestic supply

D. Every sale made to a tourist

Correct Answer: A. An export of goods from India satisfying statutory conditions

Question 2

Which additional condition is especially relevant to a supply to an SEZ unit or developer?

A. The supply must be for authorised operations

B. The supplier must always charge central tax

C. The recipient must be an unregistered person

D. The goods must be sold below cost

Correct Answer: A. The supply must be for authorised operations

Question 3

What is the principal function of an LUT in GST exports?

A. It permits eligible zero-rated supply without payment of integrated tax

B. It permanently exempts all domestic sales of the exporter

C. It replaces the need for shipping documents

D. It converts deemed exports into imports

Correct Answer: A. It permits eligible zero-rated supply without payment of integrated tax

Question 4

Which document is central evidence for an import of goods and related import tax credit?

A. Bill of entry

B. Export promotion contract only

C. SEZ identity card only

D. Domestic delivery challan only

Correct Answer: A. Bill of entry

Question 5

An export refund calculation uses zero-rated turnover of ₹40 lakh, adjusted total turnover of ₹80 lakh and eligible Net ITC of ₹6 lakh. What is the formula-based refund amount, assuming no other restriction?

A. ₹1.5 lakh

B. ₹3 lakh

C. ₹6 lakh

D. ₹12 lakh

Correct Answer: B. ₹3 lakh

Question 6

What does the doctrine of unjust enrichment seek to prevent?

A. Refund where the tax burden has already been passed to another person

B. All refunds relating to exports

C. Input tax credit on every business purchase

D. Payment of customs duty on imports

Correct Answer: A. Refund where the tax burden has already been passed to another person

Question 7

Which situation most closely represents an inverted duty structure?

A. Input tax rates exceed output tax rates and credit accumulates

B. Output tax rates exceed input tax rates and no credit is allowed

C. Both inputs and outputs are outside GST

D. A taxpayer exports goods under LUT

Correct Answer: A. Input tax rates exceed output tax rates and credit accumulates

Question 8

Why does payment in foreign currency alone not prove an export of services?

A. Place-of-supply and other statutory conditions must also be satisfied

B. Foreign currency is never accepted under GST

C. Only domestic payment can qualify as export payment

D. Services cannot be exported from India

Correct Answer: A. Place-of-supply and other statutory conditions must also be satisfied

Question 9

Which is the strongest refund-control practice?

A. Reconciling invoices, returns, customs or SEZ evidence and ledgers before filing

B. Claiming all ledger credit without classification review

C. Relying only on the customer’s verbal confirmation

D. Ignoring small data mismatches

Correct Answer: A. Reconciling invoices, returns, customs or SEZ evidence and ledgers before filing

Question 10

Deemed exports differ from ordinary exports because deemed exports are generally:

A. Notified domestic supplies that do not necessarily involve movement of goods outside India

B. Services supplied only to foreign recipients

C. Imports taxed under reverse charge

D. Supplies that are always exempt from all taxes

Correct Answer: A. Notified domestic supplies that do not necessarily involve movement of goods outside India