About Our Calculators

Methodology

Site-wide content and fee records were reviewed . The Amazon seller toolkit and its guide were updated , with the published FBA rate card checked . Review dates record an editorial or fee check, not a guarantee of account-specific pricing. Guides preserve their original publication dates. Calculator notes identify assumptions, unavailable quotes and excluded charges. Regional views use US fees without currency conversion.

For Amazon, use the size tier checker to check a package, the FBA calculator to model one product, and the Fee Preview audit to review existing listings. The fee guide explains the assumptions and sources.

Our calculators use the published fee structures from each platform's official documentation. We compute listing fees, transaction fees, payment processing charges, and any additional platform-specific costs based on your inputs. Each fee in the result panel links directly to the source we used and shows the date it was last verified.

Fee Sources & Verification

Every fee in our calculators is traceable. The table below lists every fee we apply, the source or modeling assumption, and when we last reviewed the record. If you spot a rate that has changed, please let us know.

Etsy

Last verified: 2026-09-11
  • Listing Fee — $0.20 per listing, charged when a listing is created or renewed. Modelled once per order (one item per order).
    Source ↗ (2026-09-11)
  • Transaction Fee — 6.5% of the total order amount — Etsy applies it to shipping and gift wrap you charge the buyer, not just the item price.
    Source ↗ (2026-09-11)
  • Payment Processing — US Etsy Payments: 3% + $0.25, including shipping and applicable sales tax. The calculator excludes sales tax, so tax-related processing costs must be added separately. Other bank-account countries have different rates.
    Source ↗ (2026-09-11)
  • Offsite Ads — 15% of an attributed order for shops under $10,000 in any 365-day period (who may opt out), 12% for shops at or above it (who cannot). Capped at $100 per order. Modelled as an expected cost across the share of orders you attribute to Offsite Ads. Calculator estimates the tier from annualized scenario revenue, not your shop history; a shop that ever qualified for permanent 12% participation may differ.
    Source ↗ (2026-09-11)
  • Refunds — On a seller-issued refund Etsy credits the transaction and payment processing fees proportionally; the listing fee is only refunded if you also cancel. Fees are not credited when Etsy covers the refund.
    Source ↗ (2026-09-11)

Shopify

Last verified: 2026-09-11
  • Payment Processing — US Basic standard online card rate: 2.9% + $0.30. Premium and international cards may cost more. The gateway toggle adds the selected plan surcharge; leave it off for PayPal when Shopify Payments is active.
    Source ↗ (2026-09-11)
  • Shopify Plan — US monthly billing: Basic $39, Grow $105, Advanced $399. Standard online cards: 2.9%, 2.7%, 2.5%, each plus $0.30. Annual billing is $29/$79/$299 per month. Plus starts at $2,300 on a qualifying term; its 2.25% calculator rate is an illustrative assumption, not a published quote.
    Source ↗ (2026-09-11)
  • Third-party gateway fee — Basic 2%, Grow 1%, Advanced 0.6%; Plus terms vary. PayPal and manual payments are exempt when Shopify Payments is active. The toggle assumes all orders use a chargeable gateway; its own processing rate may differ from the estimate.
    Source ↗ (2026-09-11)
  • Chargebacks — US Shopify Payments chargeback fee is $15, returned if you win. The calculator models lost disputes, including lost revenue. Other processors differ.
    Source ↗ (2026-09-11)
  • Refunds — Shopify does not return card processing fees when you refund an order, so a refund costs you the order value and the processing fee you already paid.
    Source ↗ (2026-09-11)

Dropshipping

Last verified: 2026-09-11
  • Platform Fee — User-supplied — depends on the marketplace or storefront you sell through. Applied to the order total including shipping charged.
    Source ↗ (2026-09-11)
  • Payment gateway — Standard US Stripe online domestic cards: 2.9% + $0.30; $15 per dispute received. Premium/international, conversion and manual dispute-countering charges are outside this estimate.
    Source ↗ (2026-09-11)
  • Disputes — US Stripe: $15 per dispute received. An additional $15 may apply when manually countering, refunded if won. Calculator models lost revenue plus the received fee only; add other dispute costs separately.
    Source ↗ (2026-09-11)
  • Import duties — User-supplied — duty rates depend on the destination country and product classification.
    Source ↗ (2026-09-11)

Amazon FBA

Last verified: 2026-09-11
  • Referral Fee — US category rates apply to item price plus shipping and gift wrap. Clothing, baby, beauty and grocery select one rate for the whole price; jewelry and electronics accessories use marginal bands. Media closing fees and veterinary diet exceptions are not included.
    Source ↗ (2026-09-11)
  • FBA Fulfillment — Choose a manual ASIN quote or the 2026 U.S. standard/bulky estimate for supported packages up to 50 lb. The 3.5% fuel surcharge toggle adds to a base fee; turn it off for an all-in manual quote. Peak fees apply October 15, 2026–January 14, 2027.
    Source ↗ (2026-09-26)
  • Storage Fee — Choose a manual monthly quote or estimate base storage from packaged volume and average units held. The estimate applies January–September or October–December rates and excludes utilization and aged-inventory surcharges.
    Source ↗ (2026-09-26)
  • Fuel surcharge — 3.5% fuel and logistics surcharge applied to US and Canada FBA fulfilment fees since 17 April 2026 — calculated on the fulfilment fee, not the sale price.
    Source ↗ (2026-09-11)
  • Refunds — Amazon returns the referral fee minus a refund administration fee of the lesser of $5.00 or 20% of that referral fee. The fulfilment fee already spent on the order is not returned. Detailed Seller Central policy requires account access; confirm current account treatment. This review retains the existing model.
    Source ↗ (2026-09-11)
  • Professional selling plan — $39.99 per month for the Professional selling plan. The Individual plan charges $0.99 per item sold instead — set this to 0 and add $0.99 to your per-unit costs to model it.
    Source ↗ (2026-09-11)

eBay

Last verified: 2026-09-11
  • Final Value Fee — US non-Store standard rates: most categories 13.6% to $7,500 then 2.35%. Jewelry uses 15% for the whole price up to $5,000, 9% above; watches have separate marginal bands. Fees also apply to sales tax, which this calculator excludes. Seller-performance surcharges (including July 2026 changes), international fees and Store discounts are not modeled.
    Source ↗ (2026-09-11)
  • Per-order fee — $0.30 per order on orders of $10 or less, $0.40 on orders above $10. Athletic shoes priced $150 and over carry no per-order fee.
    Source ↗ (2026-09-11)
  • Insertion fees — 250 zero-insertion-fee listings a month, then $0.35 per listing. An eBay Store subscription raises the free allowance.
    Source ↗ (2026-09-11)
  • Store subscription — Subscription is an overhead input only. This calculator retains the non-Store fee schedule and 250 free listings; it does not apply Store discounts or expanded allowances.
    Source ↗ (2026-09-11)
  • Refunds — Fee credits depend on refund reason and eligibility. Model conservatively retains the per-order fee; eligible full refunds or buyer-requested cancellations can also recover it. Variable final value fees are credited in the modeled case.
    Source ↗ (2026-09-11)
  • Buyer sales tax basis — Entered buyer sales tax affects final value and per-order fee bases, not seller revenue.
    Source ↗ (2026-10-18)
  • General ad tax basis — General ad fees use the total sale including tax. No fee rate is newly assumed.
    Source ↗ (2026-10-18)

Walmart Marketplace

Last verified: 2026-09-11
  • Referral Fee — US standard category schedule; includes rates below 6% and price-dependent bands. Category promotions and seller-specific incentives are excluded.
    Source ↗ (2026-09-11)
  • WFS fulfilment — Walmart Fulfillment Services charges a per-unit fee set by weight and size, plus monthly storage. Take your per-unit figure from Walmart’s WFS estimator — this calculator does not derive it.
    Source ↗ (2026-09-11)
  • Refunds — Model assumes a seller-funded return: revenue reversed, referral fee credited, fulfillment retained. Walmart-funded reimbursements and additional return-processing charges differ and are not modeled.
    Source ↗ (2026-09-11)

TikTok Shop

Last verified: 2026-09-11
  • Referral Fee — Public US category schedule lists 6% for most categories, with exceptions. Replaces our unsupported 8% default. Editable for category and account offers; enter revenue net of seller discounts and excluding tax, including any platform-funded reimbursement.
    Source ↗ (2026-09-11)
  • Creator commission — Seller-set affiliate rate applies to product price after seller discounts, excluding tax and shipping. The refund model conservatively assumes returns after creator payout; earlier returns can recover commission.
    Source ↗ (2026-09-11)
  • Refunds — Referral fees credited minus 20% administration fee, capped at $5 per SKU. Model assumes one SKU per order and post-shipment refunds; qualifying pre-shipment cancellations and creator samples have exemptions. Creator commission is recoverable before payout, not afterward; the calculator assumes the latter.
    Source ↗ (2026-09-11)

Print on Demand

Last verified: 2026-09-11
  • Print provider cost — Your print provider’s base cost per item plus its shipping — the figures Printful, Printify, Gelato or your own supplier quote you. Entered as cost of goods and shipping because they are your costs, not a platform fee.
    Source ↗ (2026-09-11)
  • Subscription — Optional print-provider subscription that buys lower base costs. Charged monthly, so it is kept out of per-order margin.
    Source ↗ (2026-09-11)

Frequently Asked Questions

How accurate are these calculators?+
Published rates come from official documentation; seller-specific costs are marked as assumptions, and the result panel on every calculator links back to that source with the date we last verified the rate. The math is pure functions covered by unit tests. Real-world accuracy depends on edge cases we don't model — region-specific surcharges, promotional discounts, account-tier differences. Use our numbers as a strong baseline, then verify your own account against your platform's fee schedule before pricing decisions.
How often do you update the fee data?+
Every fee record carries the date we last checked it against the platform's own schedule plus a review interval — 60–90 days for marketplace schedules. Our test suite fails when a record goes past that interval, and the calculator shows an "outdated" flag instead of a green badge, so a missed re-check is visible to you rather than hidden. Every change we apply is dated and sourced on the fee changelog.
Is CommerceProfitLab free? How do you make money?+
All calculators and guides are 100% free with no signup, no email gate, and no upsell. We don't sell user data and we don't require accounts. Eventually we may add unobtrusive sponsorships from ecommerce tools we genuinely vouch for, but the calculator results themselves will never be paywalled or affiliate-influenced.
Why don't you have an account system?+
Because the tool doesn't need one. Your inputs save to your browser's localStorage so you can come back and find the last numbers you ran. We don't want to be in the business of storing your business data on our servers, and you shouldn't have to trust us to keep it secure. If you want to share or archive results, every calculator has an "Export CSV" button.
Can I use these calculators for my client work or as part of my service?+
Yes — the tools are free to use for any purpose, including commercial. If you're building a course, consulting practice, or freelance bookkeeping service for ecommerce sellers, feel free to link to specific calculators or embed screenshots in your work. We just ask that you don't scrape and rehost the calculators as your own.

Disclaimer

This tool provides estimates only and does not constitute financial advice. Actual fees may vary based on your location, account type, currency conversion rates, and promotional programs. Always verify with your platform's official fee schedule before making business decisions.

Fee data last changed 2026-09-27 · oldest record verified 2026-09-11 · see the changelog

How we keep these numbers honest

Our calculators are only as trustworthy as the data behind them. Every fee in every result links to its source — and here's the process behind that.

  1. Step 1

    Pull from the source

    Each fee starts from the platform's official pricing or fee page — never a blog post, never a screenshot.

  2. Step 2

    Encode the formula

    The rate goes into platforms.json with a verified date. Calculations are pure functions, unit-tested.

  3. Step 3

    Link the proof

    Every fee row exposes the source URL and the date we last verified it — so you can audit the number yourself.

  4. Step 4

    Re-verify on cadence

    Every record carries a review interval, and our test suite fails once one is overdue — so a missed re-check surfaces instead of ageing quietly. Rates past review are flagged on the calculator itself.