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How to Switch From FBA to FBM [Step By Step]

Last Updated on November 8, 2026 by Tanner Rankin

Expert Perspective: Written by Tanner Rankin — eCommerce Fractional CMO, founder of The Source Approach, CEO of Referazon, and creator of Brand Source OS. Contributor to Entrepreneur and The Business Journals, and author of SEO For Everyone.

Table of Contents

KEY TAKEAWAYS
  • Switching from FBA to FBM is accomplished by navigating to Manage All Inventory, selecting the dropdown menu next to Edit, and choosing “Change To Fulfilled By Merchant”.
  • Transitioning fulfillment models offers gross margin relief for specific catalog types, but can introduce operational friction if fulfillment metrics degrade.
  • Evaluating logistics readiness and Buy Box impact is critical before executing an operational migration.

Switching from FBA to FBM is a straightforward technical process within Seller Central.

How To Switch From FBA to FBM:

  1. Step 1: From the main navigation menu, select Manage All Inventory.
  2. Step 2: Once you’ve located your target product, select the dropdown button next to Edit on the right side and choose “Change To Fulfilled By Merchant”.

While the technical change requires only two steps, executing this shift without strategic evaluation can compromise channel momentum. As an eCommerce Fractional CMO, I audit fulfillment architecture to ensure operational transitions align with total net profitability and Buy Box preservation.

Who SHOULD Switch From FBA to FBM

Migrating to FBM makes strategic sense under specific operational parameters:

  • Brands with internal logistics or 3PL infrastructure capable of hitting Seller Fulfilled Prime SLA requirements.
  • Sellers establishing an FBM backup SKU to maintain channel active status when FBA inventory experiences stockouts.
  • Organizations seeking to eliminate excessive FBA storage surcharges on oversized, low-margin, or slow-moving catalog items.
  • Brands operating in proprietary sub-categories with minimal direct Buy Box competition.

Who SHOULDN’T Switch From FBA to FBM

Transitioning away from FBA can introduce immediate channel headwinds for specific brand profiles:

  • Resellers or brand owners actively competing in multi-seller Buy Box auctions.
  • Brands in highly saturated categories where Prime badge search filtering dominates customer buying habits.
  • Sellers lacking automated 3PL systems to maintain precise On-Time Delivery (OTD) and Valid Tracking Rates (VTR).
  • Catalog items where FBA fulfillment fees remain lower than direct-to-consumer parcel shipping rates.

Pros & Cons of Switching From FBA to FBM

Evaluating fulfillment shifts requires auditing unit economics alongside platform algorithm constraints:

Pros (Strategic Advantages)

  • Eliminate FBA Surcharges: Reduces reliance on rising Amazon fulfillment and storage fee structures.
  • Inventory Control: Retain central stock control across direct-to-consumer and wholesale channels.
  • Custom Packaging: Ability to insert custom collateral and branded unboxing materials.
  • Bypass Storage Limits: Protects catalog availability from restrictive FBA capacity caps.

Cons (Operational Risks)

  • Buy Box Suppression: Algorithm naturally favors FBA listings in competitive Buy Box rotations.
  • Operational Overhead: Internal team or 3PL must handle picking, packing, and shipping SLAs.
  • Customer Service Burden: Brand assumes complete responsibility for order inquiries and transit delays.
  • Damage Liability: Full financial liability for transit damage, carrier claims, and lost packages.

Frequently Asked Questions

Should I Switch From FBA To FBM When My FBA Goes Out of Stock?

Rather than constantly switching a single SKU, establish two separate SKUs for the same ASIN—one configured for FBA and one for FBM. This allows your merchant-fulfilled SKU to auto-capture Buy Box eligibility the moment FBA inventory exhausts, avoiding technical indexing breaks.

Is It Better To Sell FBA or FBM?

FBA remains superior for velocity due to automatic Prime badge placement and Buy Box priority. However, FBM offers better margin protection for oversized goods or brands with highly optimized 3PL partner rates.

Can I Do FBM and FBA at The Same Time?

Yes. By creating two distinct merchant SKUs under the same ASIN (e.g., SKU-FBA and SKU-FBM), the FBA inventory maintains primary Buy Box preference while the FBM SKU serves as a fail-safe backup.

What is the Main Difference Between FBA and FBM?

Under FBA, Amazon stores, packs, ships, and handles customer support for your products. Under FBM, the seller or a designated 3PL manages storage, fulfillment, tracking metrics, and customer service.

Can You Switch From FBM Back To FBA?

Yes. Fulfillment settings can be updated at the SKU level at any time through the Manage All Inventory dashboard.

As yout Fractional CMO for eCommerce, I end marketing waste, make your brand systematically irresisitble, and sync teams, agencies, and AI to a single source of truth.

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TANNER RANKIN

Tanner Rankin is an eCommerce Fractional CMO with 15+ years of experience, CEO of The Source Approach, CEO of Referazon (Amazon Influencer Search & CRM), and creator of Brand Source OS. Featured in Forbes, a regular contributor to Entrepreneur and The Business Journals, and a published Amazon author, Tanner specializes in eliminating marketing waste, aligning teams and AI to a single source of truth, and engineering systematically irresistible consumer brands.

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