Digital marketing has an awkward tax shape because the money usually moves in two directions at once: a fee to the agency, and ad spend passing through to platforms that are frequently offshore. How that pass-through is structured determines the tax treatment, and it is usually decided by accident.
Two models, two different positions
Pass-through. The client is billed for the agency fee, and the ad platform bills the client directly. The agency's invoice covers services only. Clean, and the client carries the platform relationship and its tax consequences.
Principal. The agency buys the media and re-bills the client, fee and spend together. The whole amount is the agency's turnover, which changes registration thresholds, working capital and the size of the invoice the client must account for.
Many agencies operate the second while describing the first. Decide it in the contract, because the tax treatment, the turnover figure and the credit position all follow from it.
Foreign platforms and reverse charge
Where advertising services are procured from a supplier outside India, the recipient in India is generally liable to account for GST under reverse charge — you pay the tax rather than the supplier charging it, then claim credit if your output is taxable.
The common failure is simple omission. The platform's invoice arrives with no Indian tax on it, so nobody raises the corresponding liability, and the omission surfaces in an audit. Whether the platform bills from an Indian entity or an offshore one changes the position, so check which entity actually appears on the invoice rather than assuming from the brand.
The levies applying to digital advertising and cross-border digital supplies have been amended more than once in recent years. This is an area where an article older than a year or two is likely to be wrong, so confirm the current position rather than relying on any write-up, including this one.
TDS: which section applies
Deduction on payments to an agency depends on the nature of the work. Advertising contracts and professional or technical services attract different sections and different rates, and the distinction is not always obvious for a retainer covering strategy, creative and media buying together.
Two practical points:
- Where a single retainer covers genuinely different categories of work, splitting it in the contract makes the deduction defensible instead of a judgement call.
- Deduct on the correct base. Where the agency is a pure pass-through for ad spend and the invoice separates fee from reimbursement, this affects what the deduction applies to. Get it agreed in writing before the first invoice, not argued after the first deduction.
What the client should insist on in the invoice
- Fee and ad spend as separate line items, always.
- Platform invoices or statements attached as backup for the spend component.
- The agency's GSTIN and correct place of supply — service to a registered recipient generally follows the recipient's location.
- The period covered, stated explicitly, so it can be matched to the campaign report.
The record-keeping that actually saves you
Marketing spend is scrutinised more than most heads because it is large, recurring and often paid to related parties or offshore entities. What defends it is boring documentation: a contract describing the scope, invoices matching that scope, platform statements supporting the spend, and campaign reports showing the work happened.
Agencies that keep this tidy make their clients' audits easier, and it is a genuine differentiator worth mentioning during a pitch.
GST rates, turnover thresholds and reporting windows change. Verify the current position on the GST portal or with your tax advisor before making a decision based on this.
About the author. Kislay Chandan has worked with schools since 2014. Rather than gathering requirements from the outside, he worked inside a school to see what actually goes wrong day to day, and built what he found into the software. He still works with Shemrock Glitters in Patna — most changes to the product start with something that came up there.
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