In large infrastructure and service contracts, advances are often paid long before the first unit of service is delivered. Under the GST framework, however, tax liability may arise at the very moment such advances are received. The situation becomes more complex when the contract itself changes hands before any services are actually performed. When a mobilisation advance has already been taxed but the contractor is subsequently replaced through contract novation, an important GST question arises: how should the tax treatment be corrected when the entity that received the advance no longer performs the supply?
When GST Arrives Before the Service Begins
Mobilisation advances are a common commercial feature of large infrastructure and service contracts. In many large projects- such as construction, consultancy, engineering, or turnkey contracts- the contractor is often required to mobilise manpower, machinery, and operational resources well before the work is actually executed. To facilitate this initial mobilisation, the contractee typically releases a mobilisation advance to the contractor at the commencement of the contract.
Under the GST framework, however, receipt of such an advance has distinct tax implications. Section 13 of the CGST Act, 2017, which governs the time of supply of services, provides that GST liability may arise even before the service is actually performed. In particular, Section 13(2)(a) provides that the time of supply shall be the earlier of the date of issue of invoice or the date of receipt of payment, where the invoice is issued within the prescribed period of thirty days.
In practical terms, this means that when a contractor receives a mobilisation advance, the date of receipt of that advance can trigger the time of supply, even though the actual services may commence only later. Consequently, the contractor is required to discharge GST on the advance received, treating it as consideration for the proposed supply of services.
While the taxation of advances under GST is now a well-understood principle, complexities arise when the original contract is not ultimately executed by the same contractor. In large projects, contracts are sometimes reassigned, novated, or transferred to another entity before any services are actually rendered. When this happens, the GST that was earlier paid on the mobilisation advance raises an important practical question:
How should the tax position be corrected when the entity that originally received the advance no longer performs the supply?
This situation highlights the intersection between contract restructuring and the GST time-of-supply provisions., requiring careful examination of the legal and procedural treatment of the advance that has already been taxed.
A Contract, an Advance, and a Change in Strategy
Consider a situation where Aarya Ltd. is awarded a contract for operation and maintenance services by Harpreet Ltd. In accordance with the contractual terms, Harpreet Ltd. releases a mobilisation advance of ₹10 lakh to Aarya Ltd. at the beginning of the project to enable the contractor to mobilise resources.
Upon receipt of this advance, Aarya Ltd. follows the applicable GST requirements by issuing the prescribed receipt voucher and discharging the GST liability on the advance received. At this stage, the tax has been duly paid even though the services under the contract have not yet commenced.
Before the project execution begins, however, a strategic decision is taken within the corporate group. It is decided that the entire contract will instead be executed by the wholly owned subsidiary Anish Ltd. Accordingly, a tripartite novation arrangement is proposed between Harpreet Ltd., Aarya Ltd., and Anish Ltd., under which the contractual rights and obligations of Aarya Ltd. are transferred to Anish Ltd., which will thereafter undertake the execution of the project.
The Turning Point - When the Contract Itself Changes Hands
Under the law of contracts, novation substitutes one contracting party for another. Once the novation agreement takes effect, the earlier contractual relationship between Harpreet Ltd. and Aarya Ltd. is replaced by a new contractual relationship between Harpreet Ltd. and Anish Ltd.
In the present situation, an important fact must be noted: Aarya Ltd. has not rendered any services prior to the novation of the contract. Consequently, the earlier mobilisation advance received by Aarya Ltd. no longer constitutes consideration for any supply to be made by it.
Since the entity that received the advance will not ultimately provide the services, the advance effectively loses its character as consideration for supply. The GST earlier paid on the advance therefore becomes tax deposited without a corresponding taxable supply, thereby requiring corrective treatment under the GST framework.
The GST Puzzle - Tax Paid but No Supply Made
GST law recognises situations where advances are received, but the underlying supply does not ultimately take place. In such circumstances, the law provides a specific mechanism to reverse the earlier transaction and neutralise the tax already paid.
Where a supplier receives an advance, issues a receipt voucher, and pays GST on that advance, but the supply subsequently does not materialise, the earlier documentation must be reversed by issuing a refund voucher. This document effectively cancels the earlier receipt voucher and records the fact that the advance is being returned.
The principle behind this mechanism is straightforward. GST is intended to apply only to supplies of goods or services. If no supply ultimately occurs, the tax previously paid on the advance cannot remain with the Government and must be corrected through the refund mechanism.
Resetting the Transaction - The Role of the Refund Voucher
Applying the above principles to the present situation, the appropriate course of action would be for Aarya Ltd. to issue a refund voucher to Harpreet Ltd. for the entire advance of ₹10 lakh and to return the advance amount previously received.
Once this is done, Aarya Ltd. may apply for refund of the GST already paid on the advance, since the tax was deposited on a transaction that did not result in any supply. Such a refund may ordinarily be claimed under the category of "excess payment of tax" under the GST refund framework.
Until the tax authorities process and sanction the refund, the GST amount already paid remains temporarily blocked in the system. In practical terms, this means that the entity that originally discharged the tax liability- Aayra Ltd. in the present context- may experience a short-term cash flow impact, since the tax paid on the mobilisation advance remains with the Government until the refund is granted.
However, such temporary blockage is largely procedural in nature. The refund mechanism under the GST framework is designed to restore the correct tax position when the underlying supply does not ultimately take place. By following the prescribed refund route, the earlier tax payment made on the advance can be formally reversed within the GST system.
Thus, although the process may involve some interim cash flow inconvenience, it ensures that the transaction is properly neutralised and aligned with the principles of GST law, so that tax ultimately remains payable only on supplies that are actually carried out.
A Fresh Beginning - Advance to the New Contractor
After the advance has been returned and the earlier transaction has been reversed by issuing the refund voucher, the revised contractual arrangement can proceed independently.
Since Anish Ltd. has now become the contractor under the novated agreement, Harpreet Ltd. may release a fresh mobilisation advance to Anish Ltd. On receipt of this advance, Anish Ltd. will issue the appropriate receipt voucher and discharge GST liability in the normal course.
The services will thereafter be provided by Anish Ltd. in accordance with the contractual obligations assumed under the novation agreement. In this manner, the GST liability becomes correctly aligned with the entity that actually undertakes the supply of services.
The Tempting Shortcut - Why Direct Transfer of Advance Can Be Risky
From a purely commercial perspective, another approach may appear more convenient. Instead of refunding the advance to Harpreet Ltd. first, it may be suggested that Aarya Ltd. directly transfer the advance amount to Anish Ltd. on behalf of Harpreet Ltd. This would avoid an additional fund transfer and may seem administratively simpler for all parties involved.
However, while this route may look convenient from an accounting or operational standpoint, it can create interpretational concerns under GST law. When funds move directly between group entities without first being returned to the original payer, the transaction may no longer appear as a simple refund of advance. Instead, the tax authorities may interpret the transfer as a separate transaction between related persons carried out in the course or furtherance of business.
In such a situation, the movement of funds from Aarya Ltd. to Anish Ltd. could be examined as a taxable supply, a facilitation arrangement, or a financial accommodation between related parties. Once the transaction is viewed through this lens, questions may arise regarding whether GST should apply on the transfer itself.
It is important to note that the ultimate economic outcome for the group may remain exactly the same- the advance simply reaches the entity that will actually perform the contract. However, the documentation trail created by a direct transfer between group entities may create ambiguity about the transaction's nature. This, in turn, may invite unnecessary scrutiny from tax authorities and potential disputes, which could otherwise be avoided through a clearer, more transparent refund-and-repayment route.
The Safest Route Under GST
For this reason, the approach of refunding the advance followed by a fresh advance under the novated contract is generally regarded as the most compliant and transparent method under the GST law.
By reversing the original advance through issuance of a refund voucher and returning the funds to the project owner, the earlier transaction is cleanly neutralised. Thereafter, the project owner may independently release a fresh advance to the substituted contractor, who will discharge GST in the normal course.
This approach aligns the taxable event with the entity that actually performs the service and ensures that GST documentation accurately reflects the underlying commercial reality.
The Larger Lesson for Businesses
Contract novation is fairly common in large infrastructure and service projects. During the life cycle of a project, it is not unusual for the execution responsibility to shift from one entity to another, particularly within a corporate group where work may ultimately be performed by a specialised subsidiary. Such changes are often driven by commercial considerations such as operational expertise, project restructuring, or internal business decisions.
However, when such a change takes place after mobilisation advances have already been received and GST has been discharged, the tax treatment requires careful attention. The GST framework is built on a simple but important principle: the tax liability must ultimately arise in the hands of the entity that actually undertakes the taxable supply.
If the original contractor ultimately does not execute the contract, the advance earlier received by it can no longer retain the character of consideration for supply. In substance, the amount ceases to represent payment for any taxable service by that entity. Therefore, the earlier tax treatment needs to be corrected in a legally proper manner.
The most legally sound and procedurally transparent approach is to reverse the earlier transaction. This is ordinarily achieved by issuing a refund voucher, returning the advance to the project owner, and claiming refund of the GST that was earlier paid on the advance. Through this process, the original transaction is formally neutralised within the GST framework.
Once this correction is completed, the project owner may release a fresh advance to the substituted contractor, who will then discharge GST in the normal course in accordance with the time-of-supply provisions. In this manner, the tax liability ultimately rests with the entity that actually undertakes the project execution.
In contract-novation matters, procedural clarity is the most effective safeguard against future litigation. When the earlier advance is properly reversed through issuance of a refund voucher and the tax position is corrected through the refund mechanism, the GST system is restored to its intended balance. The substituted contractor can then receive a fresh advance and discharge GST in the normal course, ensuring that the tax ultimately rests with the entity that actually performs the supply.
In the evolving landscape of GST compliance, the most reliable approach is often the one that faithfully reflects the transaction's underlying commercial reality. Where contractual arrangements change, the tax documentation must change with them. A transparent and legally consistent approach at the outset not only preserves a clean audit trail but also protects businesses from avoidable interpretational disputes in the future.
In GST compliance, the safest path is often the one that most faithfully mirrors the underlying commercial reality.
By CA Raj Jaggi & Adv Kirti Jaggi
CAclubindia
