Margin Ruler

FBA Profit Calculator for Break Even Roas Calculator (United States)

FBA Profit Calculator for Break Even Roas Calculator in United States. Start with a national planning baseline, then choose a city to open the regional planning page.

Amazon FBA is active. Other marketplace modules stay marked as planned until audited.

Published fee inputs, dated assumptionsNo account or emailPrivate unless you save
Methodology

FBA Profit Calculator. Estimates per-unit FBA profit after unit cost, referral fee, closing fee where applicable, simplified fulfillment fee, and blended storage multiplied by per-product months on hand.

Fee basis: 2024 published FBA rate-card midpoints; 2026 fee-change scope reviewed 2026-05-08. Known 2026 surcharges and program-specific fees are excluded unless explicitly modeled.

Read the formula, inclusions, exclusions, and fee-category audit →

Calculator
Inputs
Enter your operating figures for a planning estimate based on published rate cards and industry midpoints.
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Result
Fill in your operating figures above to get a planning estimate.
Review vendors before committing — no obligation.

This page is the city-agnostic starting point used for planning and AI-agent handoff. Pick a city below to open the regional planning page. The calculator uses the same source-dated fee logic unless local calibration is shown.

Choose your city