Indirect Tax Laws · Refund

Unjust Enrichment and Refund to Consumer Welfare Fund (Customs) for CA Final

Updated 5 October 2026

Unjust enrichment means a claimant should not get back duty that he has already recovered from the buyer. If you passed the duty on in the price, the sanctioned refund is credited to the Consumer Welfare Fund. If you bore the duty yourself, or fall under a listed exception, the refund is paid to you. Prove non-passing-on with documents.

Understand Unjust Enrichment and Refund to Consumer Welfare Fund

Suppose an importer pays ₹1,00,000 of duty that was not legally payable. He then adds that duty to his selling price and recovers it from his customers. If the department now refunds ₹1,00,000 to him, he gains twice: once from the customer and once from the Government. This double gain is unjust enrichment.

The law stops it with a simple test: who bore the incidence of the duty? Incidence means the real economic burden. If the claimant bore it, he is the one who lost, so he gets the refund. If he passed it on to the buyer, he lost nothing, so he gets nothing.

But the money is still not kept by the Government. When the claimant has passed on the burden, the refund that is otherwise due is credited to the Consumer Welfare Fund. The Fund is used for the welfare of consumers, because consumers are the ones who ultimately bore the duty.

So every refund claim under the customs refund provision (Section 27) has two gates. Gate one: is the refund legally due, and is the claim made within the time limit? Gate two: has the incidence been passed on? Only if gate two is cleared, or an exception applies, does the cash reach the claimant. In Mafatlal Industries Ltd v Union of India (1997), the Supreme Court upheld the constitutional validity of the unjust enrichment provisions in Section 11B of the Central Excise Act and Section 27 of the Customs Act.

The burden of proof lies on the claimant. He must show with records that he did not pass the duty on. A chartered accountant's certificate helps but is only supporting evidence. The officer looks at invoices, price lists, books of account and the pricing pattern.

The same idea runs through GST refunds. There, too, a refund is paid to the applicant only if he has not passed on the tax, and otherwise it goes to the Consumer Welfare Fund, with specific exceptions such as exports.

Key rules to remember

Core test: Incidence NOT passed on → refund paid to claimant; Incidence passed on → refund credited to Consumer Welfare Fund; Applies after the refund is found due and the claim is within the time limit.
Burden of proof: Claimant must prove that the incidence of duty was not passed on to any other person; Use invoices, price lists, accounts and the pricing pattern. A CA certificate is supporting evidence, not conclusive proof.
Refunds paid to the claimant instead of the Fund: Applicant who bore the duty and did not pass it on | Individual importing for personal use | Government | Institution or organisation notified by the Central Government | Class of applicants notified by the Central Government; The second proviso to Section 27(2) provides that the refund is paid to the applicant instead of the Fund where the applicant falls in one of these categories. The first is the core rule itself (duty borne, not passed on), not an exception to it. The others are true exceptions. In an answer, name the category that matches the facts. Export duty refund under Section 26 and drawback are governed by their own provisions. They are not cases under the second proviso to Section 27(2) and are not tested under the Section 27 unjust enrichment rule.
Who may claim in the 'borne by buyer' case: A buyer who bore the duty and did not pass it on further may receive the refund; The refund follows the person who truly bore the burden.
Order of operations: Refund due? → Within time? → Incidence passed on? → Exception? → Pay claimant or credit Fund; Use this as the skeleton of every answer.

How to solve Unjust Enrichment and Refund to Consumer Welfare Fund questions

Use the same sequence for any question, whether it is a case scenario MCQ or a written answer. Write it in provision, facts, conclusion form.

1Identify the claimant and what he claims. Is he the importer, a buyer, an individual, or the Government or a notified institution or organisation? If the claim is export duty refund under Section 26 or drawback, note that these have their own provisions and are outside the Section 27 unjust enrichment test.
2Confirm that duty was actually paid and that a refund is otherwise due, for example excess assessment or a duty found not leviable. Check that the application was made within the time limit.
3Find out who bore the incidence. Read the facts for clues: duty shown separately in invoices, price revised upward after duty rose, sales to dealers, or goods used by the importer himself.
4Check whether the claimant has produced evidence. Note that the burden is on him, and that a certificate alone is not conclusive.
5Test the other cases in the second proviso to Section 27(2): personal use by an individual, import by the Government, import by a notified institution or organisation, or a notified class of applicants. If none applies, rely on the core rule: the importer or buyer who bore the duty and did not pass it on gets the refund.
6State the conclusion: refund to the claimant, or credit to the Consumer Welfare Fund. If only part was passed on, split the answer if the facts allow.
7Close with the reason in one line: the claimant either bore the duty or fits an exception, or he already recovered it from the buyer.

Quickest way: Three-question shortcut

When to use it: Use it for case scenario MCQs where you have about a minute per question.

Ask: is this an exception person? Individual importing for personal use, Government importing, a notified institution or organisation importing, or a notified class of applicants. If yes, the refund goes to the claimant. Export duty refund under Section 26 and drawback follow their own provisions, not the Section 27 unjust enrichment test.
If not, ask: did the claimant recover the duty from customers, for example by showing it in the invoice or raising the price? If yes, the refund goes to the Consumer Welfare Fund.
If the facts show the claimant absorbed the duty and has proof, the refund goes to him. If proof is missing, the safe answer is that he has not discharged the burden, so the Fund is the likely result.

Common mistakes in Unjust Enrichment and Refund to Consumer Welfare Fund

Writing that unjust enrichment means the refund is rejected altogether.
Students confuse it with a time-barred or inadmissible claim.
Fix: Say that the refund is sanctioned but credited to the Consumer Welfare Fund instead of being paid to the claimant.
Applying unjust enrichment to every Section 27 refund, including imports by the Government or notified institutions or organisations.
The rule is learnt as universal and the exceptions are skipped.
Fix: Always run the exception list in the second proviso to Section 27(2) before concluding. Imports by the Government, imports by notified institutions or organisations, personal-use imports by individuals and notified classes of applicants are paid to the claimant. Also remember that export duty refund under Section 26 and drawback are governed by their own provisions, not by the Section 27 test.
Assuming a CA certificate alone proves the duty was not passed on.
Certificates are common in practice and appear in answers.
Fix: Write that the burden is on the claimant and the certificate is only supporting evidence. Add invoices, price records and accounts.
Treating an individual's personal-use import like a trader's import.
Students overlook the personal-use exception.
Fix: If an individual imported for his own use, no one else bore the duty. The refund goes to him.
Concluding that the buyer can never get a refund.
Students think only the importer claims.
Fix: Remember that a buyer who bore the duty and did not pass it on further can receive the refund. The test is who bore the burden.
Ignoring the time limit and the two-gate structure.
Students jump straight to the incidence question.
Fix: First confirm that the refund is due and the claim is in time. Only then examine unjust enrichment.

Worked examples

Example 1

Delta Traders imported a consignment of goods and paid customs duty of ₹5,00,000. The duty was later found to be excess by ₹1,00,000 because of a wrong tariff classification, and Delta applied for a refund within the time limit. Delta's sales invoices to its dealers show customs duty as a separate line, and Delta has no evidence that it absorbed any part of the duty. Who gets the ₹1,00,000?

Show the solution

Provision: a refund of customs duty that is otherwise due is paid to the claimant only if he has not passed on the incidence of the duty to any other person. If he has, the amount is credited to the Consumer Welfare Fund. The burden of proof is on the claimant.
Facts: the refund is legally due because of the wrong classification, and the application is within time. So the first gate is cleared.
Facts on incidence: the duty is shown separately in the dealers' invoices. That means Delta recovered it from them. Delta has produced no evidence of absorbing it.
Exceptions: Delta is a trader, not an individual importing for personal use, not the Government, not a notified institution or organisation, and not a notified class of applicants. No exception applies.
Conclusion: the incidence was passed on, so unjust enrichment applies.

Answer: The ₹1,00,000 is sanctioned but credited to the Consumer Welfare Fund. It is not paid to Delta Traders.

Example 2

Ravi, an individual, imported a camera for his personal use and paid duty of ₹40,000. The value declared was later found to be overstated, so ₹6,000 of the duty was excess. Separately, Seva Foundation, an organisation notified by the Central Government for the purpose of the second proviso to Section 27(2), imported medical equipment and paid duty of ₹2,00,000. Due to a wrong tariff classification, ₹25,000 of that duty was excess. Both claims are made under Section 27 and are in time. Decide who receives the refunds.

Show the solution

Provision: a refund under Section 27 is credited to the Consumer Welfare Fund when the incidence has been passed on. But the refund is paid to the claimant in the cases listed in the second proviso to Section 27(2), including imports by an individual for personal use and imports by an institution or organisation notified by the Central Government.
Ravi, first gate: the ₹6,000 was paid because of an overstated value, so it is excess duty and the refund is due under Section 27. The claim is in time.
Ravi, second gate: he imported for his own use. He did not resell, so he did not pass the duty to anyone. The personal-use exception applies and the ₹6,000 is refundable to him.
Seva Foundation, first gate: the ₹25,000 is excess duty because of the wrong classification, so the refund is due. The claim is in time.
Seva Foundation, second gate: it is an organisation notified by the Central Government, so the notified institution or organisation exception applies. The unjust enrichment test does not stop payment to it.
Conclusion: both claims clear the first gate, and neither is diverted to the Fund.

Answer: Ravi gets ₹6,000 and Seva Foundation gets ₹25,000. Neither amount goes to the Consumer Welfare Fund.

Exam tips

Write the principle in one line, then apply it. Examiners reward the link between the facts and the conclusion.
Always say the refund is credited to the Consumer Welfare Fund, not rejected. This one phrase separates full-mark answers from partial ones.
In case scenarios, hunt for clues about passing on: duty shown in invoices, price increases after duty rises, sales to dealers. Also look for the exceptions in the second proviso to Section 27(2): personal use, Government import, import by a notified institution or organisation. If the claim is export duty refund under Section 26 or drawback, say it is governed by its own provisions and not by the Section 27 unjust enrichment test.
Mention the burden of proof on the claimant and the need for documents. It costs one line and often earns a mark.
For a mixed question, you can add a one-line GST parallel: a refund to the applicant only if the tax was not passed on, otherwise to the Fund, with exceptions such as exports.

Practice questions from Refund

Unjust Enrichment and Refund to Consumer Welfare Fund: frequently asked questions

What is unjust enrichment in a customs refund?

It means the claimant would gain twice if he got a refund of duty that he already recovered from his buyers. The law therefore pays the refund to the claimant only if he bore the duty. If he passed it on, the amount is credited to the Consumer Welfare Fund.

When is unjust enrichment not applicable to a customs refund?

The second proviso to Section 27(2) provides that the refund is paid to the applicant instead of the Fund where the applicant bore the duty and did not pass it on, is an individual importing for personal use, is the Government, is an institution or organisation notified by the Central Government, or belongs to a class of applicants notified by the Central Government. The first of these is the core rule restated, not a separate exception. Export duty refund under Section 26 and drawback are governed by their own provisions and are not tested under the Section 27 unjust enrichment rule.

Who has to prove that the duty was not passed on?

The claimant has to prove it. He should produce invoices, price lists, books of account and any other records that show he absorbed the duty. A chartered accountant's certificate supports the claim but does not settle it by itself.

Where does the refund go if unjust enrichment applies?

The refund is sanctioned and then credited to the Consumer Welfare Fund. The claimant does not receive it. The Fund is applied for the welfare of consumers who bore the burden of the duty.