Should you join ONDC and what joining takes
Understand what joining ONDC actually involves for an Indian seller what it costs operationally and which businesses should stay out for now.
ONDC is a network and not an app
The common misunderstanding comes first. ONDC is not a marketplace you list on. It is an open network backed by a government-promoted initiative that lets buyer-side apps and seller-side apps transact through a common protocol. There is no ONDC storefront and no ONDC seller panel.
What that means in practice is that joining is indirect. You onboard through a seller network participant which is a seller app of your choosing. Your products then become discoverable inside buyer apps that you do not control and have no relationship with. The experience a shopper sees is built by that buyer app rather than by you.
What it costs and what it does not give you
Joining gives you no storefront, no brand page, no followers and no marketing channel. You cannot style how your product appears because the buyer app decides that. There is also no single support desk in the way a marketplace has one. Issues route through the network's grievance process and through your seller app.
The commercial terms do not come from the network either. Your seller app sets what you pay, which may be an onboarding charge, a subscription, a per-order fee or a mix, so read that contract as carefully as you would read a marketplace fee schedule. GST at 18% applies to those service fees and GST registration is generally expected of sellers on the network.
The larger cost is operational. Your catalogue has to be prepared to the network's attribute and serviceability format. Orders arrive in a second stream that someone has to watch. Fulfilment is either your own or network logistics and both need wiring up. Grievance handling is an obligation rather than an option.
Who should stay out for now
If your existing marketplace listings are not yet profitable then ONDC will not fix that. It adds an order stream with the same unit economics and a new operations overhead on top. Fix the margin where you already have volume. A second channel multiplies whatever your contribution per order currently is including a negative one.
A brand that sells on presentation should also wait. In the categories where buyer app demand is most developed the discovery tends to be led by price, proximity and availability rather than by brand storytelling. If your product only makes sense alongside your photography and your copy then you are entering a context that strips both.
The third case is a seller whose inventory and serviceability data is unreliable. A catalogue claiming stock you do not have or a pincode you cannot serve produces cancellations and those are visible across buyer apps rather than contained in one account. Sellers running stock on a spreadsheet updated twice a week should fix that first.
The sequence if you go ahead
Check demand before building anything. Find out whether your category is active on the network and which buyer apps are actually carrying it. Preparing a catalogue for a category with thin buyer-side coverage is weeks of work for no orders.
Then choose your seller app deliberately. Compare the fee structure, the order management it gives you, whether it offers an API or an integration with the systems you already run and what it does about logistics. This is the single decision that determines your day-to-day experience of the network.
Prepare the catalogue with real serviceability and real stock. Decide fulfilment. Set up how orders reach the person who packs them and how a complaint reaches the person who answers it. Then start narrow with a small SKU set in one city and widen only once the operational loop is boring.
How to tell whether it is working
The metric that matters is contribution per delivered order on this channel alone with the seller app fees, logistics and cancellations attributed to it. Keep it separate from your marketplace numbers. Blending them hides a channel that is losing money behind one that is not.
The metric that flatters is order count during a period when a buyer app is funding discounts. Those orders arrive quickly, they leave with the promotion and they tell you little about underlying demand. Network-level growth figures quoted in the press flatter in the same way because they describe the network rather than your category or your city.
The mistake that produces cancellations
The common mistake is uploading the whole catalogue on day one to see what happens. Every SKU with doubtful stock and every pincode you cannot reliably serve becomes a cancellation waiting to be triggered by a real buyer.
It is expensive for two reasons. Cancellations harm you on a network where your reliability is read by multiple buyer apps rather than by one platform you can negotiate with. And the operational cost of monitoring a wide catalogue is paid every day whether orders arrive or not. A narrow launch costs less and tells you more.
The rules here are still moving
Network policies, participation terms, category coverage and seller obligations have changed repeatedly since the network opened and will change again. Treat anything you read about ONDC including this page as a description of a shape rather than a rulebook and verify the current position with your seller app before committing. A qualified professional should confirm your registration, invoicing and consumer protection obligations for the categories you intend to sell in.
This guide explains how something works. It is not legal, tax or financial advice, and rules change. Confirm anything regulatory with a qualified professional before you act on it.