Best ONDC Seller Platform for Amazon Sellers: A 2026 Buyer's Guide

QuickAnswer

The best ONDC seller platform for an Amazon seller is one that canbulk-import and map your existing catalog, sync inventory across Amazon andONDC (and across warehouses) so you don't oversell, handle ONDC orders,returns, and payouts in one dashboard, and give you a choice of deliveryoptions. The margin case is real: Amazon sellers often lose roughly 20-30% oforder value to commission, fixed fees, shipping, and GST on those fees, whileONDC seller apps are reported to charge roughly 3-12% depending on category andapp. But price shouldn't be the only filter, and "best" depends onwhether you fulfill yourself, use FBA, or run several warehouses. Shortlist twoplatforms, test each with a sample of your own catalog, and compare themagainst the checklist below.

If you sell on Amazon, you already know thesqueeze: commission, fixed fees, shipping charges, advertising, and GST on topof most of it. Adding ONDC is an obvious question, and the follow-up is alwaysthe same: which seller platform should I use? This guide is published byCOSTBO, so we've kept the criteria platform-neutral and flagged where youshould verify claims, including ours. If you're still getting oriented, startwith how seller apps and buyer apps divide the work on ONDC.

The Numbers: Why Amazon Sellers Are Looking at ONDC

A few data points that frame the decision:

•     Once commission,fixed fees, shipping, collection charges, and GST on those fees are added up,Amazon and Flipkart sellers commonly see roughly 20-35% of order value absorbedin total, according to marketplace fee comparisons

•     ONDC seller appsare reported to charge commissions in roughly the 3-12% range depending oncategory and app, with food delivery reported as low as 3-5%, though logisticsand any app subscription come on top

•     The network isnow large enough to take seriously: as of late 2025, India's governmentreported more than 7.7 lakh sellers and service providers, around 1,100 citiesand towns served, and 344.5 million recorded orders

•     Amazon India hasits own bridge for multichannel sellers: its Multi-Channel Fulfillment (MCF)program lets sellers use Amazon's fulfillment centres and delivery network,which covers all serviceable pin codes, for orders that come from otherchannels, at an introductory price of Rs 59 per order when it launched

One honest caveat: ONDC is still much smallerthan Amazon's marketplace, so plan for it as an additional channel, not areplacement. The goal is margin and reduced dependence on paid acquisition, notabandoning the platform that already sends you orders.

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Amazon-Specific Things to Check Before You Commit

•     Don't assume aone-click import from Seller Central. We didn't find public documentation of adirect Amazon-to-ONDC catalog import in the seller apps we looked at, so askevery platform how it moves your catalog over. Most rely on bulk spreadsheetupload or a connector for your own website, as covered in our guide to sellingon your own website and ONDC with one integration.

•     FBA stock is notautomatically available to ONDC. Inventory in Amazon's fulfillment centres canserve other channels only through MCF, which pulls from the same stock pool asFBA. Third-party guides also note that Amazon prioritises its own FBA orders overMCF orders, which can delay non-Amazon deliveries, so test before promisingfast delivery on ONDC.

•     Your Amazonlisting is not an ONDC listing. ONDC categories expect their own attributes,and regulated categories need licences such as FSSAI for food. Budget time forclean-up, not just upload.

•     Set ONDC pricesfrom your own cost structure rather than copying Amazon prices, and checkAmazon's current seller policies on pricing and on holding the same stockacross channels before you decide.

•     Plan for adifferent returns flow. On ONDC, returns and refunds move betweenthe buyer app, the seller, and the logistics provider rather than through one company's customerservice, so your platform's return tracking matters more than it did on Amazon.

•     Multichannelinventory tools built for Amazon exist, but we couldn't confirm ONDC supportfor the ones we reviewed. If you already use one, ask both vendors before youadd a channel.

Which Platform Fits Which Amazon Seller

•     Merchant-fulfilledseller with one warehouse: a full ONDC seller app with bulk upload is usuallyenough. Start with a small range of your best-margin SKUs and expand onceorders flow cleanly.

•     FBA-heavy brand:keep FBA for Amazon, hold separate merchant stock for ONDC at first, and onlyconsider MCF once a platform confirms it can route orders there.

•     Seller ordistributor with several warehouses: prioritise per-warehouse stock sync andorder routing, the same issues covered in our guide to multi-warehousemanagement.

•     Brand with itsown Shopify or WooCommerce store: a connector, or a seller app that syncs yoursite, avoids maintaining a third catalog.

A Five-Step Plan to Add ONDC Without Disrupting Amazon

1.     Shortlist twoplatforms using the checklist above, and ask each to onboard a sample of yourown catalog before you commit.

2.     Get yourdocuments ready: PAN, GSTIN, bank details, and any category licences. Our guideto registering as an ONDC seller lists them.

3.     Ring-fence asmall stock allocation for ONDC, separate from your FBA stock, so a surge onone channel can't empty the other.

4.     Set ONDC pricesfrom your own margins, then decide how much of the lower commission to keep andhow much to pass on as better pricing. Our look at whyacquisition costs keep rising on marketplaces explains why the extra margin matters.

5.     Review orders,cancellations, returns, and payouts weekly for the first month, then scale therange and the stock allocation.

Where COSTBO Fits

COSTBO is an ONDC seller platform built aroundthe multi-channel, multi-location case Amazon sellers tend to have: bulkcatalog upload, multi-warehouse inventory sync, order and return management inone dashboard, and delivery options from same-day to 20-minute across 40+cities, with go-live possible in as little as 24 hours. If you're comparingplatforms, ask us, and every other vendor, the same questions in the tableabove, and run a trial with your own SKUs before deciding. We also keep abroader overview of the field in our list of top ONDC platforms in India.

Frequently Asked Questions

Can I sell on ONDC if I already sell on Amazon?

Nothing in ONDC's open-network model requiresyou to stop selling elsewhere. You register through a seller app and yourcatalog becomes discoverable across ONDC buyer apps. Check Amazon's currentseller policies on pricing and inventory before you set up.

Can I use my FBA inventory to fulfill ONDCorders?

Only through Amazon's Multi-Channel Fulfillment,which lets FBA sellers fulfill orders from other channels using the same stock,and only if your ONDC seller platform can route orders to it. Third-partyguides note Amazon prioritises FBA orders over MCF, so delivery on otherchannels can lag.

Is there a one-click import from Amazon SellerCentral to ONDC?

We didn't find one documented in the publicmaterials we reviewed. Most platforms rely on bulk spreadsheet upload orconnectors for your own website, so ask each vendor how they migrate catalogs.

How much cheaper is ONDC than Amazon forsellers?

Amazon sellers commonly lose roughly 20-30% oforder value once all fees and GST are counted, while ONDC seller apps arereported to charge roughly 3-12% in commission. Delivery and any appsubscription are extra, so compare total cost per order, not commission alone.

Should I move from Amazon to ONDC entirely?

Probably not. ONDC is still much smaller thanAmazon's marketplace, so most sellers use it as an additional, lower-commissionchannel that reduces dependence on paid acquisition.

How do I pick between ONDC seller platforms?

Shortlist two, ask each to onboard a sample ofyour own catalog, and compare them on catalog mapping, inventory sync, FBA andMCF handling, returns tracking, logistics choice, fees, and support.

The Bottom Line

There isn't one best ONDC seller platform forevery Amazon seller. There's the one that moves your catalog over with theleast rework, keeps stock accurate across channels, and makes returns andpayouts easy to reconcile. Test that with your own products, not a democatalog.

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References

• IndianMarketplace Seller Fees Comparison 2026 — GoNukkad

• AmazonIndia introduces Multi-Channel Fulfillment (MCF) for non-Amazon sellers,retailers

• AmazonMulti-Channel Fulfillment: A 2026 Guide for Sellers — Assureful

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About Costbo

Founded by Mr. Eswar and Mr. Ananth, with nearly 20 years of technology experience, Costbo is a leading ONDC seller platform and ONDC seller app powering India’s open digital commerce ecosystem. Costbo is among the first ONDC 1.2.0 certified seller platforms, enabling brands and sellers to sell on ONDC with fast onboarding, lower costs, and full operational control.

Ready to grow on ONDC? Start your journey with Costbo today.

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Read More

1. Building Blocks of ONDC: A Detailed Guide to India’s Open Digital Commerce Infrastructure
2. ONDC A Revolutionary Open eCommerce Network – in Action
3. Roles of Seller App & Buyer App on ONDC Network
4. Why Sell Online Through the ONDC Network?
5. Getting Started as a Seller on ONDC: Registration Options
6. Which Is the Best ONDC Seller App? Features, Pros & Cons (2026)
7. Best ONDC Buyer Apps in 2026: Features, Pros & Cons
8. What is ONDC Buyer App

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