Eva Answers / Working with an agency
How Do I Switch Amazon Agencies Without Losing Performance?
Answered by Hai Mag, Founder & CEO, Eva Commerce, with 20+ years in eCommerce transformation, marketplace optimization, and AI-driven automation.
Last reviewed: October 21, 2026
Short answer: Make sure your Seller Central and Amazon Ads accounts are in your name, then list every account, access right, campaign, asset and open task before you give notice. Give the new agency access through Amazon’s partner and user tools, never a shared password, keep one team making changes during the handover, and only then remove the old agency’s access. Campaigns and history live in your account, so nothing should need rebuilding.
Step by step
- Confirm you own the accounts. You should be the primary user of Seller Central and an admin on your Amazon Ads account. Amazon’s manager account guide says the advertiser fully owns its own account. If an agency created anything under its own login, fix that first.
- Build a handover inventory. List accounts and access, active campaigns, budgets and bid rules, negative keyword lists, creative and A+ source files, Brand Store files, keyword research, reports, connected apps, and open cases. Eva starts every transition with an agreed inventory of accounts, access, campaigns, assets, and ongoing work.
- Agree scope, owners and handoffs before changing anything. Decide who owns each item on day one, who approves changes, and when the old agency stops. Discuss these dependencies before ending the current arrangement.
- Grant the new agency access the right way. In Seller Central, add an outside company as an Authorized Partner with the minimum permissions it needs. In Amazon Ads, invite users with a standard role (admin, editor, viewer) or custom permissions, or approve the agency’s manager account request from Access and settings, then Manager account.
- Save a baseline and keep one team in control. Download campaign and search term reports before the switch so you can compare results later. During any overlap, let only one team edit campaigns so changes are not doubled or undone.
- Remove the old agency’s access. In Amazon Ads, Amazon’s guide says Account access, then Manager accounts, then Remove access removes all users inherited from that manager account. Then review Seller Central user permissions and Authorized Partners, and disconnect apps the old agency added.
Handover checklist
| Item | Where it lives | Who should own it |
|---|---|---|
| Seller Central login and users | Seller Central user permissions and Authorized Partners | You (primary user) |
| Amazon Ads account and users | Amazon Ads account access, manager account links | You (admin) |
| Campaigns, budgets, negatives | Your Amazon Ads account | You, managed by the active agency |
| Bid rules in third-party tools | The tool’s account | Check the contract. Export rules before the switch |
| Creative, A+ and Store source files | Agency drives or design tools | You. Ask for the source files |
| Reports and dashboards | Exports and shared folders | You. Download a baseline |
Exceptions
- Agency-owned software. If bids ran through the agency’s own tool, the rules may not transfer. Export or document them first.
- Creative licensing. Check whether your contract gives you the source files, not just the finished images.
- Notice periods. Your contract decides the end date. Plan the overlap around it.
Eva’s process has three steps: talk about the real problem, see a more connected approach, and make a considered transition that agrees scope, access, handoffs and ownership before anything changes. Eva can take on one channel or work alongside your internal team. See Outgrow your agency. Before you choose, use the guide to choosing an Amazon advertising agency.
Follow-up questions
Should I give my agency my Seller Central password?
No. Amazon tells sellers not to share passwords. External companies should be added as Authorized Partners with only the data access they need, not as secondary users.
Will my campaigns disappear when I remove the old agency?
Amazon’s manager account guide says removing an agency’s manager account removes the users it brought in, and that the advertiser fully owns its own account. Before you remove access, confirm the campaigns sit in your own advertising account and note any bid rules run by a third-party tool, since those rules may leave with the tool.
Do I need to end my current agency contract before talking to a new one?
No. Eva’s first conversation needs no store connection, no account passwords, and no commitment to change providers. Scope and handoffs are agreed before anything changes.