TDS on the GST component of an invoice

According to CBDT Circular No. 23/2017, Tax Deducted at Source (TDS) under Chapter XVII-B of the Income-tax Act is to be deducted only on the basic value of services or goods, excluding the Goods and Services Tax (GST) component, provided the GST component is indicated separately in the invoice. If the GST is consolidated into a lump sum amount without distinct bifurcation, TDS must be deducted on the gross invoice amount.

Statutory Background (CBDT Circular 23/2017)

Historically, under the service tax regime, there was significant confusion regarding whether income-tax withholding should apply to the tax component of bills. The Central Board of Direct Taxes (CBDT) resolved this by issuing Circular No. 23/2017. The circular clarified that to prevent double taxation (deducting tax on tax), the component of GST (CGST, SGST, IGST, UTGST) should be excluded from the base value for calculating TDS. This exclusion applies to all TDS sections under Chapter XVII-B of the Act where payments are made for services, rent, or contracts, provided the invoicing conforms to the separation rules.

Key Rules and Invoicing Requirements

For a business to legally exclude GST from its TDS calculations, the invoice must satisfy specific structural conditions:

• Separate Indication: The GST components must be clearly split out and listed as separate line items on the invoice face.
• Lump Sum Invoices: If a vendor issues an invoice for 'Rs. 1,18,000 inclusive of GST' without providing a line-by-line breakup of the base value and the tax component, the deductor **must deduct TDS on the full Rs. 1,18,000**.
• Reimbursements: Out-of-pocket expenses reimbursed to a service provider on an actual basis do not attract TDS, provided they are billed separately and do not include markup. If they are consolidated into the main service invoice, they are subject to TDS.

Comparison: Separate GST vs. Consolidated Invoicing

The table below highlights the difference in tax withholding and net payouts depending on how the invoice is drafted:

TDS under GST Law (Section 51) and Comparison

It is crucial to distinguish Income-tax TDS from GST TDS. Under Section 51 of the CGST Act 2017, government entities, public sector undertakings, and specific notified bodies must deduct **GST TDS** at 2% (1% CGST + 1% SGST, or 2% IGST) on payments to suppliers where the contract value exceeds Rs. 2.5 Lakh. For GST TDS, similar to income tax, the value of supply is calculated **excluding GST** listed on the invoice. CAs must help clients separate these two calculations, as they belong to entirely different statutory systems and require filing different returns (Form GSTR-7 on the GST portal vs. Form 26Q/27Q on the income tax portal).

Audit Considerations for Corporate Deductors

During the annual statutory and tax audit processes, external auditors will verify that the corporate accounts department has consistently followed Circular 23/2017. Auditors spot-check supplier ledgers and invoice vouchers. If they find instances where TDS was incorrectly deducted on the GST component, it does not trigger income tax penalties (as excess deduction is not a default), but it creates cash flow reconciliation disputes with vendors. Conversely, if TDS was under-deducted because GST was excluded without separate invoicing split, the auditor will report it as a default, triggering interest under Section 201(1A).

Worked Example: Invoicing Analysis and Multi-Regime Compliance

Let us consider a corporate scenario where **Join Flora Private Limited** receives an invoice from a consulting agency for professional research services. The agency bills the service as follows:

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Professional Fees:              Rs. 5,00,000
IGST @ 18%:                     Rs.   90,000
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Total Invoice Amount:           Rs. 5,90,000
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Compliance Processing:
- The accounts department reviews the invoice and verifies that the GST component of Rs. 90,000 is separately indicated.
- Under Section 194J, the TDS rate for professional fees is 10%.
- Applying Circular 23/2017, the TDS is calculated on the base professional fee of Rs. 5,00,000.
- TDS amount = Rs. 5,00,000 * 10% = **Rs. 50,000**.
- Net amount paid to the consulting agency = Rs. 5,90,000 (Gross Invoice) - Rs. 50,000 (TDS) = **Rs. 5,40,000**.
If the agency had billed a flat amount of Rs. 5,90,000 without showing the IGST line, Join Flora would have been legally required to deduct TDS at 10% on Rs. 5,90,000, resulting in TDS of **Rs. 59,000** and a reduced net payout of **Rs. 5,31,000**. This demonstrates why proper invoice formatting is critical for cash flow optimization across all supplier agreements.