HBTax: Platform Fee Calculator

Enter your sale price, shipping charged, and item cost. See net proceeds and profit across eBay, Etsy, Poshmark, Depop, Facebook Marketplace, and Mercari — ranked by payout with the winner highlighted.

Where this fits

📦 Business & Seller Ops Seller OS Sellers Founders

This tool lives inside Seller OS and is most useful for sellers and founders.

401(k) Limit 2024$23,000(+$7,500 catch-up 50+)

Roth IRA Limit$7,000(MAGI phase-out applies)

S&P 500 Avg Return~10%/yr(nominal, historical)

HBTax: Platform Fee Calculator — What do you actually pocket after selling on each platform? Enter your sale price, shipping, and item cost to see the real breakdown — and compare all 6 platforms side by side.

Sale details

Sale price

Shipping charged to buyerWhat the buyer paid (not your cost)

Item cost (COGS)What you paid for the item

Platform

All platforms — ranked by profit

Platform	Fees	Fee %	Net proceeds	Profit
Facebook Marketplace	$2.90	5.0%	$55.10	$45.10
Etsy	$5.96	10.3%	$52.04	$42.04
Depop	$6.74	11.6%	$51.26	$41.26
Mercari	$7.03	12.1%	$50.97	$40.97
eBay	$7.99	13.8%	$50.02	$40.02
Poshmark	$10.00	17.2%	$48.00	$38.00

Facebook Marketplace gives you the most for this sale: $55.10 net proceeds vs $48.00 on the lowest-payout platform.

You might also need

HBTax: eBay Seller Fees Calculator

Calculate your exact eBay Final Value Fees by category, Top Rated Seller discount (10%), promoted listings cost, and true net profit. See the full fee stack before you list.

Try it

HBTax: eBay Reseller P&L Calculator

Your 1099-K isn't your taxable income. Enter eBay gross sales, COGS, platform fees, and expenses — get your actual taxable profit, SE tax estimate, and the difference between what eBay reported and what you actually owe tax on.

Try it

Amazon Seller Fee Calculator

Calculate your true Amazon profit before listing. Enter product category, sale price, weight, dimensions, and COGS to get a full FBA or FBM fee breakdown — referral fee, fulfillment fee, storage fee — plus net profit per unit, monthly profit, annual profit, margin %, and breakeven price.

Try it