Changes to the Amazon Participation Agreement (Now the Business Solutions Agreement): A Seller’s 2026 Guide

Most sellers still call it the “Participation Agreement.” Amazon stopped using that name years ago. The contract you actually signed when you opened your seller account is the Amazon Services Business Solutions Agreement (BSA) - a 40-plus-page document that quietly gets updated several times a year and governs everything from how Amazon holds your payouts to what happens when a customer files an A-to-z claim.

You don’t need to read the BSA cover to cover. You do need a system for catching the changes that matter. The current one is a big one: March 4, 2026, when Amazon’s new Agent Policy takes effect and every automated tool touching your account - repricers, PPC software, listing tools, feed managers - becomes a compliance question.

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Table of Contents

1. Participation Agreement vs. Business Solutions Agreement
2. The March 4, 2026 BSA Update - What’s Actually Changing
3. Key BSA Sections Every Seller Should Know
4. Agent Policy 2026: A Seven-Step Compliance Audit
5. How to Monitor Future BSA Changes Without Losing Sleep
6. FAQ

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Participation Agreement vs. Business Solutions Agreement

Before 2011, Amazon’s third-party seller relationship was governed primarily by the Participation Agreement. That language still hangs around in older articles, forum posts, and - yes - case law. Starting in 2011, Amazon rolled out the Business Solutions Agreement and funneled new sign-ups through it. The BSA is longer, more detailed, and carries the controlling terms. When the General Terms of the BSA conflict with other policies, the General Terms win.

Practical takeaway: when someone emails you about a “Participation Agreement change,” they almost certainly mean a BSA change. The official reference is Seller Central help article G1791.

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The March 4, 2026 BSA Update - What’s Actually Changing

This is the update sellers should be paying attention to right now. Continued use of your Seller Account after March 4, 2026 constitutes acceptance - there is no opt-out. Five substantive changes:

1. A new Agent Policy for automated tools and AI. Any software that accesses Amazon Services on your behalf must clearly identify itself as automated, comply with the new policy continuously, and cease access immediately if Amazon asks. This is the single biggest operational change since 2019. It affects virtually every seller running a modern tech stack.

2. AI and machine-learning restrictions. You can no longer use Amazon materials or services to train AI models or develop machine-learning systems on Amazon data. Enhanced anti-reverse-engineering language was added. If you’ve been scraping product pages or review data to feed a model, stop.

3. Section 20 - Dispute resolution, reorganized. Binding arbitration and class-action waivers remain intact. What changed is the detailed articulation of arbitrator powers. For sellers, the practical implication is that documentation matters more than ever when you dispute an account action.

4. Mexico store separation. Amazon is publishing a separate BSA for the Mexico store. All Mexico references are being removed from the US/Canada agreement, with minor Canada-specific clarifications added. If you sell in Mexico, you’ll be agreeing to a distinct contract.

5. Terminology and definitions. New formal definitions for “Agent,” “Applicable Government Authority,” and “Our Materials.” Updated “Insurance Limits” definition. Privacy references consolidated under “Amazon’s Privacy Notice.” “Developer Site” renamed to “Solution Provider Portal.”

The change most likely to trip you up is #1. The others are policy housekeeping. The Agent Policy rewrites the rules for how your tools interact with Amazon.

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Key BSA Sections Every Seller Should Know

You don’t need to memorize the BSA - but you should know which sections get referenced when things go wrong. Here’s the cheat sheet:

Section	Topic	Why It Matters
Section 2	Fees and fund withholding	Amazon can hold payouts when it anticipates chargebacks or A-to-z claims. Arbitrators in Washington and Virginia have struck down parts of the permanent-withholding language as unconscionable - the provision is not bulletproof.
Section 3	Term and termination	The basis for account suspensions. Since 2019, sellers receive a 30-day appeal window.
Section 4	License rights	Amazon gets broad rights to reuse your listing images and content. If you sell across multiple platforms, plan accordingly.
Section 8	Liability limitations	Amazon’s liability is capped at fees you paid in the preceding six months. Courts have sometimes refused to enforce this when the inequity is extreme - but don’t count on it.
Section 9	Insurance	If your monthly gross proceeds exceed $10,000 (USD in US, CAD in Canada), you must carry $1M in commercial general liability naming Amazon as an additional insured.
Section 15	BSA modifications	Amazon committed in August 2019 to at least 15 days’ advance notice before BSA changes take effect.
Section 18 / 20	Dispute resolution / arbitration	Binding arbitration with the AAA, class-action waivers, one-year filing window. Section 20 is being reorganized March 4, 2026.

Most sellers will only ever interact with Sections 2, 3, and 9 directly. Know where they are.

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Agent Policy 2026: A Seven-Step Compliance Audit

If you run any combination of a Professional Seller account plus external tools - which is to say, most active sellers - you need to do this. Not in April. Before March 4.

Amazon has made clear that non-compliance is enforceable at the account level, not just the tool level. If your repricer violates the Agent Policy, Amazon can act against your Seller Central account, not your vendor’s servers.

The audit:

1. Inventory every tool that touches your Amazon account. Repricers, PPC managers, listing tools, inventory sync, A+ content tools, review monitors, feedback automators, custom scripts, scraping utilities, browser extensions. If it has API credentials or a login, list it.

2. Contact each vendor. Ask directly: “Are you compliant with the Amazon Agent Policy 2026 effective March 4?” Get the answer in writing. Reputable vendors will have a public compliance statement.

3. Verify self-identification. The policy requires agents to identify themselves as automated systems. Your vendor’s API integration should be doing this - not a stealth scraper pretending to be a browser.

4. Establish a kill switch. You must be able to immediately revoke a tool’s access if Amazon requests. In practice: know how to rotate MWS/SP-API tokens, revoke OAuth grants from the Solution Provider Portal (formerly Developer Site), and disable browser sessions.

5. Eliminate shared credentials. Contractors using your Seller Central login is a common Agent Policy violation waiting to happen. Give contractors their own limited-permission users.

6. Stop AI-training use of Amazon data. If you have internal projects scraping product pages, reviews, BSR, or category data to train models, shut them down. The prohibition is explicit.

7. Document what you’re running. Maintain an internal log of every tool, its permissions, and its compliance status. If a dispute reaches arbitration, this documentation is the evidence you’ll wish you had.

A safer default going forward: if you can’t answer “why does this tool need API access and what exactly does it do with it” in one sentence, cut the tool.

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How to Monitor Future BSA Changes Without Losing Sleep

BSA changes don’t happen on a schedule. April 2025 brought Canada-specific insurance and A-to-z updates. March 2026 brings the Agent Policy. The next round could land any quarter. You need a system that doesn’t depend on your remembering to check.

Build it in four layers:

• Seller Central notifications. Turn on email alerts for policy and account updates. This is where Amazon sends the 15-day heads-up.
• Seller Central Forums. Amazon posts BSA update threads there before the effective date. Bookmark the current thread for any pending change.
• Third-party plain-English summaries. Follow two or three reliable sources - EcommerceBytes, MyAmazonGuy, AMZ Sellers Attorney, SellerEngine - for translations of Amazon’s legal language into operational implications.
• A quarterly calendar hit. Fifteen minutes, once a quarter, to skim the BSA help page (G1791) and confirm nothing has shifted that affects your tools, insurance, or payout assumptions.

Most sellers try to do this reactively and miss things. The cost of missing an update is rarely theoretical - it’s a suspended tool or a frozen payout.

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FAQ

What is the Amazon Business Solutions Agreement?

The BSA is the master contract between Amazon and third-party sellers. It governs fees, fulfillment, intellectual property, termination, dispute resolution, and - starting March 4, 2026 - the use of AI and automated tools. It replaced the older Participation Agreement as the primary governing document starting in 2011.

Is the Participation Agreement still in effect?

Sort of. Both documents technically exist, but the BSA is the controlling contract. When sellers or competitors reference the “Participation Agreement,” they almost always mean the BSA.

How much notice does Amazon give before BSA changes?

At least 15 days. Amazon committed to this in August 2019 as part of a broader seller-protection update, which also gave sellers a 30-day appeal window on suspensions. Major updates like the March 4, 2026 changes typically get several weeks of lead time.

What happens if I use a non-compliant automation tool after March 4, 2026?

Amazon can restrict or suspend your Seller Central account - not just the tool. Enforcement is at the seller level. Audit every tool that touches your account before the deadline.

Do I need to re-accept the BSA when it changes?

No. Continued use of Selling Services after the effective date constitutes acceptance. That’s why monitoring matters: silence equals agreement.

Where is the current BSA?

Seller Central help article G1791. Log in to Seller Central and search “Business Solutions Agreement” - the help link will take you to the current master version for your marketplace.

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