Amazon’s Washington State Ad Tax: What Sellers Need to Know
Reading Time: 3 minutesAmazon recently announced a significant change for sellers advertising in Washington state:…
Amazon is rolling out a major transformation in how third-party developers, agencies, and service providers access Seller Central. Effective August 31, 2025, all third-party SP-API developers must migrate to the Amazon Solution Provider Portal (SPP) to retain access to Selling Partner API (SP-API). Additionally, starting April 10, 2025, all agencies, consultants, and software providers must register on the Solution Provider Portal (SPP) to maintain access to Amazon Seller Central accounts.
This move fundamentally changes how Amazon manages external tools and service providers, enforcing tighter security, compliance, and access control.
The Amazon Solution Provider Portal (SPP) is a centralized gateway for third-party developers and service providers to register, manage integrations, and access Amazon’s marketplace tools. SPP replaces Service Provider Central (SP Central) and brings enhanced compliance, better data access, and API monitoring to streamline Amazon seller and vendor solutions.
(Video Credits: Amazon SP-API Developer University)
Amazon’s shift to SPP is driven by security, compliance, and efficiency concerns. By centralizing all third-party integrations, Amazon aims to:
This move reinforces Amazon’s long-term trend of limiting third-party access to its ecosystem while ensuring compliance with its policies.
For SP-API Developers:
For Service Providers (Agencies, Consultants, and SaaS Providers):
If third-party developers and service providers fail to complete the transition before August 31, 2025, they risk:
For detailed migration steps, visit: Amazon Solution Provider Portal (SPP)
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