TDS on mobilization advance to EPC subcontractors is deducted at the time of payment under Section 194C (2% for companies, 1% for individuals/HUF) or Section 194J, even before any invoice is raised. Since billing often happens in later financial years, the TDS deducted on advance gets carried forward and claimed in the year the income is actually billed. This carry-forward treatment is high-risk: the Income Tax Department frequently issues scrutiny notices. If you are an EPC contractor or subcontractor, you need a precise, year-wise TDS reconciliation working to close those notices and stay compliant.

What Is Mobilization Advance in EPC Contracts?

In Engineering, Procurement, and Construction (EPC) contracts, the project owner (or main contractor) typically pays a mobilization advance to the subcontractor before any work begins. This upfront payment enables the subcontractor to mobilize resources, procure material, deploy equipment, and set up the site.

The advance can range from 5% to 20% of the total contract value and is recovered progressively through deductions from running account bills (RA bills) raised during execution. Because billing starts only after physical work begins, there is always a time gap between the advance received and the income actually recognized.

Is TDS Deducted on Mobilization Advance?

Yes. Under the Income Tax Act (and the Direct Tax Code 2025 for AY 2026-27 onwards), TDS is triggered at the earliest of: (a) credit of the amount to the payee's account, or (b) actual payment. Since mobilization advance is paid in cash or bank transfer, TDS must be deducted at the time of payment itself, regardless of whether a bill has been raised.

Applicable TDS Sections

Nature of Work	Section	Rate (Company/Firm)	Rate (Individual/HUF)
Sub-contract for works (civil, mechanical, electrical)	194C	2%	1%
Professional/technical services (design, consultancy)	194J	10%	10%
Technical services (non-professional)	194J (FTS)	2%	2%

Most EPC subcontracts fall under Section 194C because they involve execution of works. However, if the subcontractor provides only design or supervisory services, Section 194J applies at 10%.

GST on Mobilization Advance for EPC Subcontractors

If the EPC subcontractor is a service provider (which most are, since the contract is predominantly for services or composite supply), GST liability arises on the advance received under Section 12(2) read with Section 13 of the CGST Act, 2017. GST must be paid in the tax period in which the advance is received, even before the invoice is issued.

Key GST Points on Advance

• GST rate on works contract services for commercial construction: 18%
• For affordable housing / government projects: 12%
• A Receipt Voucher must be issued when advance is received
• When the final invoice (RA Bill) is raised, adjust the GST already paid on advance to avoid double payment
• TDS deducted by the contractor is on the gross advance (including GST component in many cases), which creates a mismatch that must be reconciled

This dual compliance obligation (TDS at receipt + GST at receipt) makes mobilization advance one of the most complex areas for EPC businesses. Taxocity's team handles both the GST and income tax side end-to-end. Learn more about GST Filing services.

The Core Problem: TDS Deducted Before Billing

Here is the typical scenario that creates complexity:

• April 2025: Subcontractor receives mobilization advance of ₹1 crore. Contractor deducts TDS of ₹2 lakh (2% under Section 194C) and deposits it against the subcontractor's PAN.
• FY 2025-26: No RA bills are raised. No income is recognized by the subcontractor for this project.
• ITR Filing (July 2026): The subcontractor's Form 26AS / AIS shows ₹2 lakh TDS for FY 2025-26. But there is no corresponding income declared in the return for that year.
• Result: If the subcontractor claims this TDS in AY 2026-27, the Department notices that TDS was deducted in an earlier year but claimed now, and issues a scrutiny notice.

This mismatch between the year of TDS deduction and the year of income recognition is the root cause of most EPC-related income tax scrutiny notices.

How to Carry Forward TDS on Mobilization Advance

The correct approach, aligned with the matching principle and tax department guidance, is to carry forward the TDS credit to the year in which the corresponding income is offered to tax. Here is the step-by-step process:

Step 1: Maintain a TDS Carry-Forward Register

For each project, maintain a register tracking: advance received date, TDS deducted amount, financial year of deduction, RA bills raised year-wise, and the income recognized year-wise.

Step 2: Match TDS to Income Year-Wise

In the year of billing (say FY 2026-27), identify how much of the billed amount relates to the advance already received. The TDS attributable to that portion of advance should be claimed in AY 2027-28 (the assessment year corresponding to FY 2026-27).

Step 3: Disclose Carry-Forward in ITR

When filing ITR for the year of advance receipt, do not claim the TDS in Schedule TDS. Instead, include a note (in the computations filed with the return or maintained as working) that this TDS is being carried forward. In the subsequent year of billing, claim it under the appropriate schedule with a clear cross-reference to the year of deduction.

Step 4: Prepare a Year-End TDS Reconciliation

Each year-end requires a three-column reconciliation:

Category	Action in Current Year's ITR
TDS from previous years being claimed now (income recognized this year)	Claim in Schedule TDS; disclose deducted year
TDS deducted this year on advances (no billing yet)	Carry forward; do NOT claim yet
TDS deducted this year matching this year's billing	Claim directly in Schedule TDS

This working must be preserved carefully as documentary evidence. When the income tax department sends a scrutiny notice on TDS mismatch, this reconciliation is the primary document used to close the case. See also: TDS on Running Account Bills in EPC Contracts and Government Contractor TDS Mismatch Resolution.

Scrutiny Notices on TDS Carry-Forward: What to Expect

The Centralized Processing Centre (CPC) and field assessing officers frequently issue notices under Section 143(1) or Section 143(2) when:

• TDS credit claimed in the return does not match the year reflected in Form 26AS
• TDS is claimed in a year where no corresponding income is shown
• TDS from multiple prior years is claimed in a single year without explanation

In all such cases, the response must include: the project-wise TDS carry-forward register, copies of the advance agreements, RA bill copies showing the billing period, and a computation sheet linking each TDS amount to the year of income recognition.

Without this documentation, the assessing officer may disallow the TDS credit and raise a demand. With proper working prepared at the time of ITR filing, these notices can typically be closed quickly at the response stage itself without going to appeal.

Vendor Accounting for Mobilization Advance

Proper accounting is the foundation of good TDS compliance. The advance received should be credited to a liability account (e.g., "Mobilization Advance Received") and not recognized as revenue until the corresponding work is completed and billed. As each RA bill is raised, a portion of the advance is "adjusted" or "recovered" and the liability reduces proportionately.

This accounting treatment directly supports the tax position of income recognition on billing, not on advance receipt. It makes the TDS carry-forward claim defensible. For more detailed guidance on this, refer to: Vendor Advance Accounting in EPC Projects.

Common Mistakes EPC Subcontractors Make

• Claiming all 26AS TDS in the year of deduction without matching to income, creating a mismatch that triggers notices
• Recognizing advance as income in the year of receipt for accounting purposes but not offering GST, leading to dual non-compliance
• Not maintaining project-wise TDS registers, making it impossible to respond to scrutiny notices
• Ignoring GST on advance and paying GST only when RA bills are raised, which is non-compliant and attracts interest under Section 50 of CGST Act
• Using incorrect TDS section: applying 194J (10%) when 194C (2%) was applicable, or vice versa

How Taxocity Helps EPC Contractors and Subcontractors

Taxocity, with more than three decades of experience in Indian taxation, specializes in complex EPC and infrastructure project compliance. Our team of real human experts (not automated tools) handles:

• Project-wise TDS carry-forward register preparation at year-end
• ITR filing with proper TDS disclosure and carry-forward notes
• GST compliance on mobilization advances (receipt voucher, adjustment in subsequent RA bills)
• Drafting responses to scrutiny notices with complete documentation
• Reconciliation of Form 26AS / AIS with books for all prior years
• End-to-end support from the year of advance receipt through the final billing year

With our 100% compliance guarantee and 4.8/5 rating from 5,000+ clients, we ensure your EPC business stays clean on both the GST and direct tax fronts.

Talk to a Compliance Expert for Your EPC TDS Issues

Key Takeaways

1. TDS on mobilization advance is deducted at payment under Section 194C (2%/1%) or 194J (10%/2%), before any invoice is raised.
2. GST is also payable on advance receipt if the subcontractor is a service provider.
3. TDS must be carried forward to the year in which the corresponding income is billed and recognized, not claimed in the year of deduction.
4. A project-wise TDS carry-forward register is mandatory for each financial year-end.
5. The Income Tax Department routinely scrutinizes TDS carry-forward claims. Proper documentation closes these notices at the response stage itself.
6. Correct accounting treatment (advance as liability, not income) is the foundation of a defensible tax position.

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Disclaimer: This article is for general informational purposes only and does not constitute tax advice. Tax laws and their interpretation are subject to change. EPC contract structures vary significantly, and the tax treatment depends on the specific facts of each case. Please consult a qualified tax advisor or Taxocity's expert team before making any tax or compliance decisions.