GainHelm
Real FBA Profit Calculator

Calculate Your FBA Profit Automatically

Stop using spreadsheets and estimates. GainHelm calculates your real FBA profit from actual Amazon orders with exact fees, COGS, and ad spend.

Free plan available with limited features • No credit card required

Why Estimates Aren't Enough

Traditional FBA calculators estimate fees. GainHelm shows you what Amazon actually charged.

Traditional Calculators

Estimate fees based on product dimensions
Don't account for fee changes
Miss storage fee variations
Can't track actual order profit
No ad spend attribution

GainHelm

Shows actual fees from Amazon SP-API
Updates automatically with fee changes
Exact storage fees per order
Real profit per order and product
Full ad spend tracking (PPC, Facebook, etc.)

All FBA Fees, Tracked Automatically

GainHelm tracks every Amazon FBA fee so you see real profit margins.

Referral Fee

8-15% of sale price depending on category

Fulfillment Fee

Based on product size and weight tier

Storage Fee

Monthly fee based on cubic feet in FBA warehouse

Long-Term Storage

Additional fee for inventory over 365 days

Removal Fee

Fee to remove or dispose of inventory

Prep Service Fee

Optional labeling and prep services

The Complete FBA Profit Formula

Real Profit =

Sale Price

- Referral Fee

- FBA Fulfillment Fee

- FBA Storage Fee

- COGS (Cost of Goods Sold)

- Ad Spend (PPC, FB, etc.)

- Refunds & Returns

GainHelm calculates this automatically for every order.

See Your Real FBA Profit

Connect Amazon Seller Central and see actual profit margins in minutes. Free plan available - upgrade for full features.

Or use our free FBA fee calculator for quick estimates.