This article, "FBA vs FBM: How Your Fulfillment Choice Sets Your Amazon Capital Requirement," was originally published at https://www.blogthetech.com/fba-vs-fbm-amazon-capital-requirement/. If you are reading it anywhere else, it was copied without permission.
Fulfillment method is a capital-structure decision. FBA prepays per-unit fees and locks inventory in Amazon’s network; FBM carries fixed overhead and keeps inventory in-house. Compare both on shared cost lines, then assign a method SKU by SKU.