Amazon Seller vs Vendor: 1P vs 3P Compared for 2026

The difference between an Amazon seller and an Amazon vendor is who owns the inventory when the shopper clicks Buy.

A seller (third party, or 3P) lists products on Amazon's marketplace and sells to the shopper directly. A vendor (first party, or 1P) sells to Amazon at a wholesale price, and Amazon resells the product as "Ships from and sold by Amazon".

We run advertising for both kinds of account. This guide compares them on the things that decide the choice in 2026: control, margins, cash, logistics, brand protection, advertising and the vendor chargebacks nobody mentions up front.

Amazon Seller vs Vendor: The Short Answer

Amazon Seller Central is the portal third-party sellers use to list products, set prices, manage inventory and get paid by Amazon on behalf of the shopper. Anyone can open an account.

Amazon Vendor Central is the portal suppliers use to receive and confirm Amazon's purchase orders, ship stock to Amazon's warehouses and invoice Amazon. Access is by invitation from Amazon's retail team.

Everything else follows from that ownership split. If you own the inventory, you own the price, the listing decisions and the customer service. If Amazon owns it, Amazon does.

Seller Central vs Vendor Central: Side-by-Side Comparison

This is the table we walk brands through when they ask which model fits. Fees and dates are checked against Amazon's own pages as of October 2026.

Two of these rows decide most cases: price control and how your margin is calculated. The rest are operational trade-offs you can staff around.

What Changed for Vendors and Sellers in 2025 and 2026

Most comparison posts still describe the 2020 version of this choice. A lot has moved, and some of what is repeated online has never been confirmed by Amazon.

What Amazon Has Confirmed

• AMC for every sponsored ads advertiser. On September 18, 2025, Amazon opened Amazon Marketing Cloud to all advertisers running sponsored ads, inside the ads console. Sellers and vendors get it alike.

• No more FBA prep in the US. Since January 1, 2026, Amazon no longer offers prep and item labeling for FBA shipments in the US store.

• 2026 seller fees. Amazon's 2026 fee update, published October 15, 2025, raised FBA fees by $0.08 per unit on average from January 15, 2026.

• Slower seller payouts. Amazon told sellers that on March 12, 2026 it would move them to "the standard reserve period of seven days after delivery date (DD+7)", as quoted in Seller Central's forums.

• New ad measurement. A new view attribution model applied to vCPM ads from January 1, 2026, and unified reporting went GA on June 8, 2026. Legacy report pages retire December 31, 2026.

• A renamed console. On September 29, 2026, Amazon renamed its unified ads platform Amazon Ads Agent. Vendor and seller advertisers both work in it.

What Was Reported but Not Announced

In autumn 2024, Amazon's Vendor Central team sent some vendors termination notices. One, shared publicly and reported by Retail Brew, ended the relationship on November 9, 2024 "as part of our regular review of product offerings".

Amazon's only public comment was a spokesperson's line that it regularly reviews its product offerings. Affected vendors were invited to sell as third-party sellers instead.

Through 2025, agencies reported further cuts, a revenue threshold for who stays, and higher co-op demands. None of that has been published by Amazon. The thresholds quoted online disagree with each other, so treat any number you read as one adviser's estimate.

In May 2025, Amazon also began moving Amazon Advantage accounts into Vendor Central, according to publishing-industry reporting. Advantage was the consignment program for books and media.

One more signal runs the other way. Marketplace Pulse found third-party sellers' share of paid units fell to 60% in Q1 2026, with 1P units growing faster, mostly because of grocery. Amazon is buying more, just from fewer, larger suppliers.

Control: Price, Listings and the Buy Box

As a seller, you set the price, run your own coupons and deals, and decide when to raise prices or go out of stock. That control is the main reason brands move from 1P to 3P.

As a vendor, you set a list price and a cost price. Amazon sets the retail price and will lower it to match the market, including other retailers.

When Amazon cuts the price, your invoice price does not change. The pressure comes later, in the next terms negotiation or as requests for margin support.

Listing control follows the same pattern. Sellers with Brand Registry own their titles, images and A+ Content. Vendors can submit edits too, but as the retailer, Amazon has the final say on what the detail page shows.

The Buy Box is where this hurts advertisers. If Amazon retail is out of stock, or a reseller undercuts it, the vendor's offer loses the Featured Offer and its Sponsored Products ads stop serving.

Margins and Fees: 1P vs 3P Unit Economics

Sellers pay to use the marketplace. On Amazon's pricing page, the Professional plan costs $39.99 a month, and most categories charge a 15% referral fee with a $0.30 minimum. FBA adds per-unit fulfillment and storage fees.

Vendors pay no referral or FBA fees. They give up the retail margin instead, and then pay negotiated allowances (co-op, damage, freight) and chargebacks on top.

The trap is how ad performance is measured. A vendor's ad sales are reported at Amazon's retail price, not the vendor's invoice price, so vendor ACOS looks healthier than the margin underneath it.

In this example, the same product breaks even at 41.7% ACOS as a seller and 17.3% as a vendor. A vendor bidding to a "normal" 30% target loses money on every ad-driven sale.

Run your own numbers through our break-even ACOS guide, and use the invoice margin, not the retail margin, if you are 1P. For sellers, our FBA fees guide covers the fee side.

Vendor margin is not always worse. In heavy, low-price categories, FBA fees can exceed what Amazon takes in wholesale discount, which is why many household staples stay 1P.

Payment Terms and Cash Flow

Sellers get paid as shoppers buy, with a delay. Since March 2026, North American sellers wait for delivery plus seven days before funds become available, then for the next disbursement.

Vendors get paid when Amazon pays the invoice. Terms are set in each vendor agreement and are not public; in the accounts we see, 60 days or longer is common.

Vendor remittances also arrive net of deductions. Co-op, allowances and chargebacks are taken out of the payment, so reconcile every remittance against your invoices.

Logistics: Purchase Orders vs FBA and FBM

A vendor ships what Amazon orders, when Amazon orders it. Amazon's forecasting decides the purchase order, and you confirm, ship and send an advance shipment notice (ASN).

That makes 1P inventory lumpy. Amazon may order heavily before Prime Day and nothing for weeks after, and you cannot send stock it did not order.

A seller chooses. Fulfillment by Amazon (FBA) stores and ships for you, fulfillment by merchant (FBM) keeps stock in your own warehouse, and many brands mix both. Our FBA vs FBM comparison covers the trade-offs.

Sellers carry the planning risk instead: storage fees, aged inventory surcharges and stockouts are yours. Our inventory management tips cover the restock math.

Brand Registry and Brand Protection

Amazon Brand Registry is free and open to brands with a registered or pending trademark. You can sign in with either a Seller Central or a Vendor Central login.

For sellers, Brand Registry is close to mandatory. It gives you Sponsored Brands, Sponsored Display, Brand Analytics, Stores and A+ Content, plus tools like Transparency, Project Zero and Report a Violation.

Vendors get most brand content through Vendor Central anyway, but they still need Brand Registry for protection. Unauthorized resellers hurt 1P brands twice: they take sales and push Amazon retail off the Buy Box. Our guide to removing unauthorized sellers covers the playbook.

Advertising Differences: Attribution, Reporting and AMC

Vendors and sellers buy the same ad products: Sponsored Products, Sponsored Brands, Sponsored Display and Amazon DSP. The differences are in eligibility, measurement and the data you can join.

1. Eligibility

Sponsored Products is open to professional sellers and vendors, with no Brand Registry needed. Sponsored Brands and display ads need Brand Registry for sellers, while vendors are eligible directly.

Either way, Sponsored Products only serve on products that are in stock and hold the Featured Offer. Sponsored Brands keep serving, so their clicks can land on someone else's offer.

2. Attribution Windows

Sponsored Products credits a sale for 7 days after a click for sellers and 14 days for vendors. Sponsored Brands and display ads use 14 days for both.

So a vendor and a seller running identical campaigns will report different ROAS. Never benchmark a 1P account against a 3P account without lining the windows up first, and exclude the most recent 14 days from vendor bid decisions.

3. Reporting and Retail Data

Sellers join ad data with Business Reports and Brand Analytics. Vendors use Retail Analytics in Vendor Central, which reports shipped and ordered revenue, inventory and Amazon's own margin view.

The ad reports themselves are the same for both. Unified reporting replaced the old report pages this year, and view-through numbers follow the 2026 view attribution model.

4. Amazon Marketing Cloud

AMC no longer depends on 1P or 3P status. Any sponsored ads advertiser can open it, and both can build custom audiences from ad exposure and purchase signals.

What matters more is reading results on the right basis. Judge vendor accounts on TACOS against shipped revenue, and seller accounts against total store sales.

The Hidden Vendor Cost: Amazon Vendor Chargebacks

An Amazon vendor chargeback is a fee Amazon deducts from a vendor's payment when a shipment breaks its supply chain rules. It covers the extra handling Amazon had to do, even when the goods were accepted and sold.

Chargebacks are the 1P cost most brands underestimate. They show up weeks after the shipment, they repeat on every PO until the root cause is fixed, and they come straight out of the remittance.

Common Chargeback Types

These are the categories in Vendor Central's Operational Performance report, as documented in SPS Commerce's dispute guide:

1. PO on-time accuracy. The shipment arrived outside the PO window, was not filled, or was confirmed down.

2. ASN accuracy. The advance shipment notice was late, missing, or its unit counts, ARN or bill of lading did not match.

3. Carton content accuracy. Cartons held shortages, unexpected items, extra units or the wrong case pack.

4. No carton content label. Cartons had no valid license plate label, or the label was missing from the ASN.

5. Non-compliant barcode. Product barcodes could not be scanned or did not match the catalog.

6. Prep and packaging. Items needed bagging, bubble wrap or repacking, or shipped in the wrong container type.

Amazon does not publish chargeback rates outside Vendor Central. Check your own terms in the Operational Performance report rather than trusting a figure from a blog.

How to Dispute a Vendor Chargeback

Dispute only when your records show you complied. A chargeback for a label you really forgot is cheaper to fix than to fight.

1. Pull the chargeback. Open Reports, then Operational Performance, and note the issue type, sub-type, PO and amount.

2. Check your own records. Compare ASN timestamps, carton labels, the bill of lading and proof of delivery against what Amazon says happened.

3. Gather evidence. Attach the BOL or POD, ASN records, photos of labels and open cartons, and the carrier's tracking events.

4. File within 30 days. Disputes go to the Vendor Chargeback Dispute Management team, and suppliers have 30 days from the charge date to file.

5. Escalate once if denied. A rejected dispute can usually be filed a second time with the missing evidence added. Read the rejection reason before you do.

Track outcomes by issue type. If one type keeps losing, the problem is upstream in your warehouse, not in the dispute.

How to Avoid Chargebacks

Most chargebacks we see come from three habits: building the ASN from the PO instead of the packed cartons, labeling by hand, and booking carriers late.

• Generate the ASN from what was actually packed, and send it before the truck leaves.

• Print carton labels from the same system that builds the ASN.

• Book pickups as soon as a PO is confirmed, not near the ship window.

• Review the Operational Performance report weekly, by issue type and by warehouse.

• Ask Amazon for case pack and prep requirements per ASIN before the first PO, not after the first chargeback.

The Hybrid Model: Running 1P and 3P Together

A hybrid brand runs a Vendor Central account and a Seller Central account at the same time. This is allowed and common among larger brands.

The rule that makes it work is one offer per ASIN. If Amazon retail and your 3P account both sell the same ASIN, they compete for the Featured Offer, and only the winner's Sponsored Products ads serve.

Brands we work with usually split the catalog like this:

• 1P: high-volume, heavy or low-price items where Amazon's logistics beat FBA fees.

• 3P: new launches, bundles, long-tail and margin-sensitive items where price control matters.

• 3P as a backstop: for 1P items Amazon stops ordering, so the listing does not go out of stock.

Advertising stays separate. A vendor ad account and a seller ad account each advertise their own offers, so budgets, targets and negatives need to be planned across both to avoid bidding against yourself.

Which Model Should You Choose?

For most brands in 2026 the question is not "vendor or seller" but "is 1P worth keeping for part of the catalog". New brands cannot apply to Vendor Central, and the 2024 cuts showed 1P can end with a few weeks' notice.

Choose seller (3P) if you need price control, fast data, direct promotions, or you are launching. Choose vendor (1P) for part of the catalog if Amazon invited you, you already sell wholesale to big retailers, and your operations can meet routing and labeling rules without chargebacks.

Choose hybrid when you have both: proven 1P volume on core items and products that only make money with your own pricing.

Mistakes We See in Vendor and Seller Accounts

• Using one ACOS target across 1P and 3P. Vendor ad sales are counted at retail price, so the vendor target must be much lower.

• Benchmarking 7-day seller ROAS against 14-day vendor ROAS. Line up attribution windows before comparing accounts.

• Advertising 1P ASINs Amazon has stopped ordering. No stock, no Featured Offer, and ads stop serving or send shoppers to "currently unavailable".

• Letting 1P and 3P offers collide on one ASIN. Pick one offer per ASIN and keep it.

• Ignoring chargebacks until year-end. By then the dispute window has closed on most of them.

How We Run Vendor and Seller Accounts in Adbrew

Everything above can be done in the Amazon Ads console. Running a hybrid brand there means two consoles, two attribution windows and two sets of retail data.

Adbrew is an agentic retail media management platform for Amazon and Walmart. Vendors and sellers run their sponsored ads, DSP and AMC in one place:

• Separate targets per account type. Rules you set for bids and budgets can use different ACOS or TACOS targets for 1P and 3P accounts. Sponsored Ads management applies them to the right campaigns.

• Retail-aware automation. Ads pause when an ASIN goes out of stock or loses the Buy Box, which matters most for 1P items Amazon stops ordering.

• Dashboards across both. Combine vendor and seller accounts in one dashboard, so a hybrid brand sees total ad spend against total sales.

• AMC without SQL. Build custom audiences from either account in Adbrew's AMC tool and use them in DSP or for bid boosting.

• Adbrew Intelligence. Ask for "1P vs 3P TACOS by brand for the last 90 days" and the agent builds the report from your data.

Brands on Adbrew cut ACOS by 46% on average, across more than 5,000 brands, agencies and aggregators.

Pick the Model, Then Measure It Properly

The seller vs vendor choice is mostly settled by your invitation status and your pricing needs. What is left is running each account on its own numbers.

If you advertise as a vendor, a seller or both and want one view of it, book a demo with our team and we'll walk through your accounts with you.