GST for marketplace sellers, without the jargon.
Registration, GSTIN, the returns you file, TCS, input credit — the GST fundamentals every Amazon, Flipkart, AJIO and Meesho seller needs, in plain language, and the reconciliation that keeps them all straight across platforms.
- Selling through a marketplace generally needs GST registration and a GSTIN — confirm your case with a CA.
- You typically file GSTR-1 and GSTR-3B; the marketplace files GSTR-8 for the TCS it collects on your sales.
- TCS (~1%) is a credit you claim, not a cost — reconcile it against your GSTR-2A.
- Registered sellers can usually claim input tax credit on eligible business purchases, within the law's limits.
- The law is uniform across platforms; the report formats are not — Robnu consolidates the numbers for you and your CA. Rules change; confirm on the GST portal.
GST is where a lot of new marketplace sellers freeze — it feels like a wall of forms and acronyms. It is more approachable than it looks once you see the shape of it: register, file a couple of returns, reconcile what the marketplace reports against what you owe and are owed. This guide draws that shape. It is general information, not tax advice; your specifics belong with a chartered accountant and the GST portal.
You do not need to become a tax expert to sell on marketplaces — you need to understand the handful of moving parts well enough to keep them straight and to know when to lean on your accountant. This is that handful: registration, returns, TCS, input credit, and the reconciliation that ties them together.
Registration and your GSTIN
Selling taxable goods through an e-commerce operator generally requires GST registration, and every marketplace asks for a GSTIN at onboarding. The turnover thresholds that let some small offline businesses stay unregistered do not always apply the same way to e-commerce supplies, so do not assume you are exempt because you are small. Your GSTIN is a state-wise, PAN-linked, 15-character number, and it must be correct and consistent across every marketplace account — a mismatch is a classic reason a credit later goes astray. For the registration mechanics, see our guide on GST registration for online sellers.
The returns you file
Most marketplace sellers work with a small set of returns. GSTR-1 reports your outward supplies — your sales. GSTR-3B is your summary return where you pay tax. GSTR-2A/2B are auto-populated views of inward and TCS data you use for reconciliation. Separately, the marketplace files GSTR-8 for the TCS it collected on your behalf. The frequency depends on your registration. If you build your outward return from platform data, our guide on building GSTR-1 from marketplace reports walks the practical steps.
TCS: a credit, not a cost
The single most misunderstood piece of marketplace GST is TCS. The operator collects roughly 1% on your net taxable supplies and deposits it against your GSTIN — and that is your money, held as a credit you can use against your GST liability. Sellers who read it as a fee simply lose it. The full treatment lives in two companion guides: TCS reconciliation (matching collected to credited) and claiming your TCS credit (turning the credit into money used). The wider marketplace TCS picture is in our marketplace TCS in India guide.
Input tax credit
As a registered seller you can generally claim input tax credit on the GST you paid on eligible business purchases — packaging, certain services, business inputs used for your taxable supplies — subject to the conditions and restrictions in the law and provided it reflects in your GSTR-2B. This is genuinely useful, and genuinely bounded: there are categories where credit is blocked and conditions that must be met. Because eligibility is case-specific, this is exactly the kind of thing to work through with your accountant rather than assume.
How returns, RTO and GST connect
GST does not sit apart from your operations — it moves with them. A return or an RTO reduces your net taxable supplies, which changes the GST and TCS calculated on them. So a return recorded in your operations but not reflected in your GST data (or vice versa) desynchronises your numbers. That is why the money side and the tax side share a backbone: the same settlements you check in payout reconciliation and payment reconciliation feed your GST position.
One law, several report formats
The GST law is identical whether you sell on AJIO, Meesho, Amazon or Flipkart. What differs is how each platform reports: different settlement layouts, different report names, different timing. So meeting one uniform obligation means wrangling several report formats every period — which is precisely the friction a single consolidation layer removes. See the broader GSTIN for sellers guide for how identity ties the platforms together.
A monthly rhythm that keeps GST boring
The goal with marketplace GST is not to be clever — it is to make it boring, a predictable monthly routine that never surprises you at filing time. In practice that means a short, repeatable loop each period. Pull your outward-supply data from every marketplace you sell on and reconcile it against your own records, so your GSTR-1 reflects what you actually sold. Match the TCS in each settlement against what shows in your GSTR-2A, so your credit is confirmed and current. Confirm your eligible input credit reflects in your GSTR-2B. Then file your GSTR-3B and pay, having set off the credits available to you. Done monthly, none of these steps is heavy; deferred, they pile into a quarter-end scramble.
The reason a small seller feels GST as a burden is almost never the law itself — it is the data-gathering underneath it: four platforms, four report formats, four places a number can be missed. When that gathering is consolidated and consistent, the tax work shrinks to the genuine judgement calls that belong with your accountant, and stops being a monthly hunt through dashboards. That is the whole argument for treating your operations data and your tax data as one connected system rather than two disconnected chores — the same settlements that drive your payout reconciliation are the ones your GST position is built from.
Sources & further reading
GST rules, rates, forms and thresholds change, and your obligations depend on your registration and supplies. Everything here is general information — confirm the current position on the official portals and with a chartered accountant before you act:
Five pieces to keep straight
GST for a marketplace seller is not one big thing — it is five smaller things that interlock.
- Registration. Your GSTIN, correct and consistent on every account.
- Outward returns. GSTR-1 for what you sold, on your required frequency.
- Summary and payment. GSTR-3B, where the tax actually gets paid.
- TCS credit. Reconcile and claim the ~1% collected against your GSTIN.
- Input credit. Claim eligible GST on business purchases, within the limits.
Which form does what
A quick map of the returns a marketplace seller touches — and who files them.
GSTR-1
Your outward supplies — the sales you made. Often built from your marketplace settlement and order data.
GSTR-3B
Your summary return and the point at which tax is paid, after setting off the credits available to you.
GSTR-2A / 2B
Inward and TCS data pulled together for you to reconcile — the basis for confirming your input and TCS credits.
GSTR-8
The operator’s TCS return — how the 1% it collected on your sales reaches your GSTIN as a credit.
How Robnu consolidates the numbers
Robnu does not file your GST and it does not replace your chartered accountant. The law and the return stay with you and your CA. What Robnu removes is the part that makes GST painful for a small seller: gathering consistent numbers out of four platforms that all report differently.
As an agentic OMS, it reads your AJIO, Meesho and Amazon settlements, reconciles the deductions and the TCS, and hands you and your accountant clean, consolidated figures to file from — sales, TCS collected, TCS credited, deductions checked. One source of truth instead of four report formats. Flipkart and Myntra are coming.
You sell, Robnu runs the rest and makes sure the numbers your CA files from are correct.
GST for marketplace sellers, answered
In most cases, yes. Selling through an e-commerce operator generally requires GST registration to supply taxable goods, and marketplaces ask for a GSTIN during onboarding. The turnover thresholds that let some offline businesses stay unregistered often do not apply the same way to sellers supplying through an e-commerce operator. Because the rules have exceptions and change over time, confirm your specific position with a chartered accountant and the GST portal before you assume either way.
A GSTIN is your GST Identification Number — a state-wise, 15-character registration number tied to your PAN. It is the identity under which you collect and remit GST, file returns, and receive credits such as TCS. Every marketplace account and listing should carry the correct GSTIN, because a mismatch is a common reason credits go astray.
Typically GSTR-1 (your outward supplies) and GSTR-3B (your summary return and tax payment), on the frequency your registration requires. You also work with GSTR-2A/2B (auto-populated inward and TCS data) for reconciliation. The marketplace separately files GSTR-8 for the TCS it collects on your sales. The exact set and frequency depend on your registration type, so follow the current portal requirements.
TCS — Tax Collected at Source — is the roughly 1% that e-commerce operators must collect on the net taxable value of supplies made through them and deposit against your GSTIN. It is not an extra cost; it is a credit you claim. Reconciling and claiming it is a distinct discipline covered in our TCS reconciliation and claim-your-TCS-credit guides.
Generally, registered sellers can claim input tax credit on eligible business purchases — the GST you paid on inputs and services used for your taxable supplies — subject to the conditions and restrictions in the law, and provided your suppliers have filed correctly so it reflects in your GSTR-2B. Eligibility has real limits and exceptions, so treat it case by case with your accountant.
Returns and RTOs reduce your net taxable supplies, which in turn affects the GST and the TCS calculated on them. That is one reason your settlement, your returns data and your GST filings all have to agree — a return processed in one system but not reflected in another throws the numbers off. Reconciliation across all three is what keeps them consistent.
The GST law is the same regardless of platform, but each marketplace reports and presents the data differently — different settlement formats, different report names, different timing. So while your obligations are uniform, gathering the numbers to meet them means dealing with several report formats. Consolidating them is exactly where a single reconciliation layer helps.
No — Robnu is an agentic OMS, not a tax filer, and it does not replace your chartered accountant. What it does is assemble the numbers: it reads your AJIO, Meesho and Amazon settlements, reconciles deductions and TCS, and gives you and your CA clean, consolidated figures to file from. The return stays with you and your accountant.
Related seller guides
More on the operations, money and claims that decide whether a marketplace catalogue actually makes money.
GSTIN for marketplace sellers: what it is and why you need one
Your 15-character tax registration, decoded — its structure, why marketplaces require it, and how it connects to the TCS credit most sellers never claim back.
Claim Your TCS Credit: The 1% Marketplaces Deduct That Most Sellers Never Recover
Marketplaces deduct 1% TCS on your sales and deposit it against your GSTIN. It sits waiting as a credit in your GST cash ledger — and most sellers never claim it. Here is how the credit works and how to claim it.
TCS Reconciliation: From Marketplace Reports to Your GSTR
The TCS a marketplace deducts should equal the TCS it deposits against your GSTIN — but only reconciliation proves it. Here is how to match TCS collected to TCS credited, from settlement report to GST return.
GST for Meesho sellers: the full loop from GSTIN to filing
Why GST registration is mandatory, the GST inside your price, the 18% on Meesho's commission you claim back, 0.5% TCS, and the GSTR-1/3B monthly rhythm.
The 1% TCS every marketplace deducts — and how to claim it back
TCS is not a fee — it is your money, deposited against your GSTIN and reclaimable at filing. How it works, why most sellers forfeit it, and how to reconcile it across marketplaces.
Building GSTR-1 from AJIO and Meesho reports
A spreadsheet-first method: which panel reports to pull, mapping them to GSTR-1's B2C tables, credit notes for returns, cutoff traps, and reconciling TCS with GSTR-8.
GST registration for online sellers, approved first time
The document checklist, home-office consent-letter nuances, the application flow step by step, common rejection reasons, timelines, and what the GSTIN unlocks.
Income Tax Basics for Online Sellers: Presumptive Taxation (44AD) Explained
How income tax works for a marketplace seller — business income versus GST, the presumptive scheme under section 44AD, books and audit, advance tax, and the TDS you reconcile against your 26AS.