Indirect Tax Laws and Practice · Zero Rated Supplies and Deemed Exports
Refund Formula for Zero Rated Supplies without Payment of Tax
Updated 11 October 2026 · Fact-checked
When you export under a bond or LUT, you pay no IGST, so input tax credit can pile up. Rule 89(4) caps the refund: (zero-rated goods turnover + zero-rated services turnover) × Net ITC ÷ Adjusted Total Turnover. Work out each of the three terms by its defined meaning, then substitute.
Understand Refund Formula for Zero Rated Supplies without Payment of Tax
When you export goods or services under a bond or Letter of Undertaking (LUT), you do not pay IGST on the export. But you still paid GST on your inputs and input services. That credit can sit unused in your electronic credit ledger. The law lets you claim a refund of this unutilised credit.
The refund is not the whole credit balance. Rule 89(4) gives a formula for the maximum refund admissible. The idea is simple: your credit is shared across all your turnover. Only the share that relates to zero-rated turnover is refundable. That share is zero-rated turnover divided by adjusted total turnover.
The formula has three moving parts: turnover of zero-rated supply (goods and services, each with its own definition), Net ITC, and Adjusted Total Turnover. Most exam marks are won or lost on valuing these three parts correctly, not on the multiplication.
Goods turnover is the lower of two values: the value of zero-rated goods supplied without tax under bond or LUT, or 1.5 times the value of like goods supplied domestically by the same or a similarly placed supplier, as declared by the supplier. For exported goods, the value is the lower of the FOB value in the shipping bill or bill of export and the value in the tax invoice or bill of supply.
This formula is for refund of ITC on exports without payment of tax. Refund of IGST actually paid on exports is a different route. Refund for inverted duty structure uses a separate formula in Rule 89(5).
Key rules to remember
- Refund under Rule 89(4)
- Refund = (Turnover of zero-rated goods + Turnover of zero-rated services) × Net ITC ÷ Adjusted Total Turnover
- This gives the maximum refund admissible. It applies to zero-rated supply without payment of tax under bond or LUT.
- Net ITC
- Net ITC = ITC availed on inputs and input services during the relevant period
- Both inputs and input services count here. The relevant period is the period for which the claim is filed.
- Turnover of zero-rated goods
- Lower of (value of zero-rated goods supplied without tax under bond or LUT) and (1.5 × value of like goods supplied domestically by the same or a similarly placed supplier, as declared)
- For exported goods, the value is the lower of the FOB value in the shipping bill or bill of export and the value in the invoice or bill of supply.
- Turnover of zero-rated services
- Payments received in the relevant period for zero-rated services + zero-rated services completed in the period for which payment was received in advance in an earlier period − advances received for zero-rated services not completed in the relevant period
- This is a receipts-based measure, not an invoice-based one.
- Adjusted Total Turnover
- (a) Turnover in the State or UT, excluding turnover of services + (b) turnover of zero-rated services (as above) and non-zero-rated services; excluding exempt supplies other than zero-rated supplies during the relevant period
- Goods turnover comes in as the State/UT turnover. Services come in only through part (b). Exempt supplies are left out, but zero-rated supplies stay in.
- Refund of inverted duty (for comparison)
- Maximum refund = {Turnover of inverted rated supply of goods and services × Net ITC ÷ Adjusted Total Turnover} − {tax payable on such supply × (Net ITC ÷ ITC availed on inputs and input services)}
- This is Rule 89(5). Here Net ITC means ITC on inputs only. Do not mix it up with the export formula.
- Ledger debit
- Electronic credit ledger is debited by the amount of refund claimed
- Rule 89(3). The applicant debits the ledger when the refund relates to input tax credit.
How to solve Refund Formula for Zero Rated Supplies without Payment of Tax questions
Use this order for any numerical on refund of ITC for exports under LUT. Write each component separately so that you earn marks even if one value goes wrong.
- 1Confirm the facts: the supply is zero-rated and made without payment of tax under bond or LUT. If IGST was paid on the export, this formula does not apply.
- 2Identify the relevant period, which is the period for which the claim is filed. Take all figures only for that period.
- 3Value zero-rated goods. Take the lower of FOB value and invoice value for exported goods, then compare with 1.5 times the declared value of like goods sold domestically. Take the lower figure.
- 4Value zero-rated services using receipts: payments received in the period, plus completed services paid for in advance earlier, minus advances for services still incomplete.
- 5Find Net ITC: credit availed on inputs and input services in the period. Leave out ITC that is ineligible or blocked, and any credit not availed.
- 6Build Adjusted Total Turnover: goods turnover of the State/UT, plus zero-rated services turnover, plus non-zero-rated services turnover, excluding exempt supplies other than zero-rated supplies.
- 7Substitute in the formula: (goods + services zero-rated turnover) × Net ITC ÷ Adjusted Total Turnover.
- 8State the answer as the maximum refund admissible. Add that the electronic credit ledger is debited by the refund claimed and that the actual refund cannot exceed the balance of credit available.
Quickest way: Ratio-first method
When to use it: Use this in Section A MCQs and when the question gives clean figures and asks only for the refund amount.
- Compute the ratio first: zero-rated turnover ÷ Adjusted Total Turnover.
- Multiply the ratio by Net ITC.
- Before computing, scan the data for traps: a lower FOB value, the 1.5 times cap, exempt supplies, advances for incomplete services, and ITC that is not on inputs or input services.
- Check that exempt supplies are out of the denominator and that services appear only once, through their special definition.
Common mistakes in Refund Formula for Zero Rated Supplies without Payment of Tax
Using the invoice value of exports when the FOB value in the shipping bill is lower.
Students take the first value given in the question.
Fix: For goods, always take the lower of the FOB value and the invoice value, then compare with the 1.5 times cap.
Ignoring the 1.5 times domestic value cap on zero-rated goods.
The cap is a short clause and is easy to skip when figures look straightforward.
Fix: Whenever the question gives a domestic price for like goods, test the cap and use the lower value in the numerator.
Taking services turnover as invoices raised instead of payments received.
Students apply the normal supply-based idea of turnover.
Fix: Use the receipts method: payments in the period, plus completed services paid in advance earlier, minus advances for incomplete services.
Including exempt supplies in Adjusted Total Turnover.
Students treat adjusted total turnover as simply total turnover.
Fix: Exclude exempt supplies other than zero-rated supplies. Zero-rated supplies stay in the denominator.
Counting only inputs in Net ITC, or applying the inverted duty definition by mistake.
The two formulas look similar and students blend them.
Fix: For Rule 89(4), Net ITC covers inputs and input services. In Rule 89(5), it covers inputs only.
Adding services turnover into the goods part of Adjusted Total Turnover and then adding it again.
The first limb says 'turnover in the State excluding services' and students overlook the exclusion.
Fix: Take goods turnover from limb (a), and services only from limb (b), once.
Worked examples
Example 1
Bharat Auto Components Ltd., Pune, exports goods under LUT during a month. FOB value in shipping bills is ₹80,00,000. Invoice value is ₹82,00,000. The 1.5 times value of like goods sold domestically is more than the export value. Domestic taxable supplies of goods are ₹1,20,00,000 and exempt supplies are ₹20,00,000. ITC availed on inputs and input services is ₹18,00,000. Compute the maximum refund under Rule 89(4).
Show the solution
- Turnover of zero-rated goods: lower of FOB ₹80,00,000 and invoice ₹82,00,000 is ₹80,00,000. The 1.5 times cap does not bind, so the value stays ₹80,00,000.
- Services turnover: none.
- Adjusted Total Turnover = export goods ₹80,00,000 + domestic taxable goods ₹1,20,00,000 = ₹2,00,00,000. Exempt supplies of ₹20,00,000 are excluded.
- Net ITC = ₹18,00,000.
- Refund = ₹80,00,000 × ₹18,00,000 ÷ ₹2,00,00,000 = ₹7,20,000.
Answer: Maximum refund admissible is ₹7,20,000, subject to sufficient balance in the electronic credit ledger, which is debited by the amount claimed.
Example 2
Kaveri Tech Pvt. Ltd., Bengaluru, exports goods and services under LUT for a quarter. Zero-rated goods turnover (after applying the lower-of rules) is ₹50,00,000. Payments received for zero-rated services in the quarter are ₹38,00,000, of which ₹8,00,000 is an advance for services not completed in the quarter. Services completed in the quarter for which advance of ₹5,00,000 was received in an earlier quarter are also to be counted. Domestic taxable goods turnover is ₹40,00,000, non-zero-rated services turnover is ₹25,00,000 and exempt supplies are ₹10,00,000. Net ITC on inputs and input services is ₹12,00,000. Compute the maximum refund.
Show the solution
- Turnover of zero-rated services = ₹38,00,000 + ₹5,00,000 − ₹8,00,000 = ₹35,00,000.
- Numerator turnover = zero-rated goods ₹50,00,000 + zero-rated services ₹35,00,000 = ₹85,00,000.
- Adjusted Total Turnover, limb (a): goods turnover = export goods ₹50,00,000 + domestic goods ₹40,00,000 = ₹90,00,000.
- Limb (b): zero-rated services ₹35,00,000 + non-zero-rated services ₹25,00,000 = ₹60,00,000. Exempt supplies of ₹10,00,000 are excluded.
- Adjusted Total Turnover = ₹90,00,000 + ₹60,00,000 = ₹1,50,00,000.
- Refund = ₹85,00,000 × ₹12,00,000 ÷ ₹1,50,00,000 = ₹6,80,000.
Answer: Maximum refund admissible is ₹6,80,000.
Exam tips
- Read the data line by line and tag each figure: numerator, denominator, Net ITC, or ignore. Many questions include distractors like exempt supplies and ITC that is not on inputs or input services.
- Show the valuation of goods (lower of FOB and invoice, then the 1.5 times test) as a separate line. Examiners award marks for method.
- In case-based MCQs, the trap is usually one of three: services valued on receipts, exempt supplies in the denominator, or the lower FOB value. Check these first.
- If asked to distinguish this refund from the inverted duty refund, say that Net ITC in Rule 89(5) covers inputs only and a tax-payable deduction applies, while Rule 89(4) has no such deduction.
- Close with a line that this is the maximum refund and that the ledger is debited, so your answer reads as a legal conclusion and not just a number.
Practice questions from Zero Rated Supplies and Deemed Exports
- Anand Exports Ltd (Pune) made zero-rated supplies of goods without payment of tax under LUT during a quarter. Value declared in tax invoices…
- Tanvi Software Ltd had the following for a refund period under rule 89(4): payments received in the period for zero-rated services Rs 40,00,…
- Under the sub-rule (4) formula, how is the turnover of zero-rated supply of services determined for a service exporter?
- Under Rule 89 of the CGST Rules, 2017, who may file the refund application for supplies regarded as deemed exports?
- Kaveri Textiles exported goods under LUT. During the relevant period the turnover of zero-rated supply of goods was Rs 40,00,000 (after the …
Refund Formula for Zero Rated Supplies without Payment of Tax in other exams
The same ground in other exams, if you are preparing for more than one or want another angle on it.
Refund Formula for Zero Rated Supplies without Payment of Tax: frequently asked questions
What is the refund formula under Rule 89(4)?
Refund = (Turnover of zero-rated goods + Turnover of zero-rated services) × Net ITC ÷ Adjusted Total Turnover. It applies to zero-rated supply made without payment of tax under bond or LUT. The result is the maximum refund that is admissible.
What does Adjusted Total Turnover mean for GST refund?
It is the sum of the State or UT turnover excluding services, plus turnover of zero-rated services and of non-zero-rated services. Exempt supplies other than zero-rated supplies are excluded. Zero-rated supplies stay in the figure.
How is turnover of zero-rated services calculated?
Take payments received in the relevant period for zero-rated services, add completed services for which payment came in advance in an earlier period, and subtract advances received for services not completed in the relevant period.
How is this different from the inverted duty structure refund?
Inverted duty refund under Rule 89(5) applies when input rate is higher than output rate. It uses inputs-only Net ITC and subtracts tax payable on the inverted rated supply, adjusted by the ratio of Net ITC to ITC availed on inputs and input services. The export formula under Rule 89(4) has no such deduction and covers inputs and input services.