Live seller calculators

SellerMaths Calculators

Open the right calculator fast. This page groups live SellerMaths tools for marketplace fees, payment costs, break-even price, reverse pricing, payouts, and landed-cost checks.

Last updated: 2026-03-25

Jump to the right calculator group

Use these shortcuts when you already know which type of seller math you need.

Marketplace feesEtsy and eBay fee and pricing toolsPayment costsStripe, PayPal, and payout checksCross-border costsShipping, customs, and landed-cost mathCompare toolsHead-to-head platform and processor choicesNext step after the resultMove from a number to a pricing decision

All calculators

Open the calculator that matches your exact question. Start with marketplace fees, payment costs, payout math, or landed-cost checks.

Cross-border and landed-cost calculators

Compare tools

Use these when the real question is which platform or payment stack leaves more after fees for the same sale.

Source note

This hub groups the live SellerMaths calculators and points to the official source families behind them. Use it as a fast routing page first, then check the assumptions and source note on the individual calculator you open.

1. Start with the question you need answered

Use this page when you know the business problem but do not yet know which calculator solves it best.

  • I need to estimate marketplace fees.
  • I need to find a break-even price.
  • I need to work backward from target profit.
  • I need to compare payment costs.
  • I need to check payout math.

2. Marketplace fee and pricing calculators

Start here when the marketplace changes how much you keep from a sale. These tools help with Etsy and eBay fee stacks, ad-fee impact, reverse pricing, and break-even checks.

  • Use Etsy tools for reverse pricing, break-even checks, and Offsite Ads impact.
  • Use eBay UK tools for business-seller fee and pricing checks.
  • Start here when platform fees affect your margin more than payment processing does.

3. Payment and payout calculators

Use these tools when the main question is not marketplace fees, but what payment processing or platform payout logic takes from the sale.

  • Stripe tools help with international card fees and currency-conversion costs.
  • Use the PayPal calculator for merchant-fee checks.
  • Use Gumroad tools for payout math and creator-platform comparisons.

4. Cross-border and landed-cost calculators

Some pricing decisions change because shipping, customs, or regulation changes the real cost floor. Use this section when cross-border costs matter more than platform fees.

  • Use the EU low-value parcel calculator for landed-cost planning after the 2026 low-value duty change.
  • Start here when shipping and customs change small-order economics before you reprice a cross-border offer.
  • Treat this section as a margin check, not just a fee check.

5. When a compare page is faster than a calculator

Open a compare page first when your real question is which platform or payment stack leaves more after fees for the same sale.

  • Use Etsy vs eBay Fees for marketplace-fee decisions.
  • Use Stripe vs PayPal Fees for processor-fee decisions.
  • Use Gumroad vs Shopify Fees for creator-platform setup decisions.

6. What to open after the calculation

A result is useful only if you can act on it. Move to a guide or template when you need to turn one answer into a repeatable pricing process.

  • Open a guide when you need the pricing rule behind the number.
  • Open a template when you want the same fee and margin logic in a spreadsheet workflow.
  • Open Sources or Methodology when you need to verify where a rule came from before acting on it.

7. What this page does not cover

This hub lists live tools only. Each calculator still has its own country scope, fee rules, assumptions, and freshness limits.

  • A tool listed here does not automatically apply to every country, seller tier, plan, or tax setup.
  • This page improves navigation, but the individual calculator still defines the real scope and assumptions.
  • If your case needs a page that is not live yet, trust the official source first and treat SellerMaths as incomplete for that scenario today.

Use the trust layer with the live pages

Use these trust routes when you want the routing page and the trust pages to work together, not separately.

How SellerMaths builds calculator logic

Open the methodology page when you want to understand how page scope becomes visible logic.

Open methodology

See the source logic behind these tools

Open the sources page when you want to verify which source family supports this kind of page.

Open sources

Read why page-level scope still matters

Open the disclaimer when you need the boundary between a useful page and a real-world business decision.

Open disclaimer

Related pages

Assumptions

  • This hub links only to live SellerMaths pages that already exist in the current working set.
  • A calculator listed here can still be scoped to a specific country, processor, marketplace, currency, or seller setup.
  • Compare pages, guides, and templates are included only when they directly help a calculator user move from estimate to decision.
  • This directory improves navigation but does not replace the assumptions, source note, or scope limits on each underlying page.

FAQ

Does this page list every calculator SellerMaths may publish in the future?

No. It lists the live calculator-related pages available now. Planned or missing tools are deliberately excluded so this directory does not behave like a placeholder page.

Which page should I open first if I know the profit I want to keep?

Start with a reverse-price or break-even style tool. On the current live set, the Etsy Reverse Price Calculator and Etsy Break-Even Calculator are the clearest first examples of that workflow.

Which page is best for payment-processing fees rather than marketplace fees?

Open the PayPal Fee Calculator, Stripe International Card Fee Calculator, Stripe Currency Conversion Fee Calculator, or the Stripe vs PayPal compare page depending on whether you need a single-platform estimate or a direct comparison.

Why are compare pages shown inside a calculators hub?

Because many seller searches are really decision searches, not raw math searches. A compare page is often the fastest way to answer which platform leaves more after fees for the same sale shape.

Does the calculators hub replace the official fee pages or tax guidance?

No. It is a navigation layer. The official platform pages and government guidance still matter, and the individual SellerMaths page should tell you which sources and assumptions it depends on.

Related tools and guides

Related calculators

Learn more

Compare or example

Related pages

Sources

Open the Etsy Reverse Price CalculatorOpen the PayPal Fee CalculatorRead the Methodology