TallyCrunch
42 free calculators, updated for 2026

Know your real numbers before they cost you.

Fees, rates and margins turned into one number you can act on. Built for e-commerce sellers, advertisers, finance shoppers and freelancers.

  • Free, no signup
  • 2026 rates
  • Results as you type

Same $58 order. What you actually keep:

  • Your own store$35.02
  • PayPal invoice$34.78
  • TikTok Shop$33.52
  • Etsy$31.04
  • Amazon$29.50
  • eBay$28.91
  • Poshmark$25.40

At ten orders a month that gap is $1,154 a year.

Run your numbers

Instant, as you type

No calculate button, no waiting. Every keystroke updates the result and the full breakdown in real time.

Private by design

No sign-up, no email gate. Your numbers never leave your browser, because calculations run entirely on your device.

Built for decisions

Not just an answer. A line-by-line breakdown plus a plain-English guide on how the number is built and how to improve it.

Everything on TallyCrunch

42 calculators across six areas, each with a full breakdown and a written guide.

What each marketplace and payment processor really takes from a sale.

See all 10

Margin, landed cost, discounts and the numbers behind a pricing decision.

See all 6

The advertising funnel end to end, impressions through to lifetime value.

See all 9

Monthly payments, total interest and how much faster you could be debt-free.

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How money grows over time, and what it takes to hit a target.

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Take-home pay, freelance rates, and the tax that comes off the top.

See all 8

Platform fees change. We update the calculators.

When eBay, Etsy, Amazon or PayPal move their rates, the numbers here move with them. Get a short note when something changes, plus new calculators as they land.

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