Terms · Margin calculator
The rules for the free version, the monthly subscription and the one-time purchase of Navega’s calculator.
Version 1 · October 27, 2026.
The calculator is provided by Navega Inovação em Tecnologia Ltda, a Brazilian company (CNPJ 69.607.719/0001-91) based in São José do Rio Preto, Brazil. Contact: contato@navega.tec.br.
The calculator is a decision aid. Fees come from each marketplace’s official pages when published, and from market sources when not; in those cases you see an “estimate” notice and can type your own rate. Marketplaces change fees without notice, so always double-check on a real order. It is not accounting, tax or legal advice, it never accesses your seller account, and it does not guarantee any profit or result.
To subscribe you create an account with your email and a password. Keep your password private; one subscription is for one person. Forgot it? Use “Forgot my password” on the account page.
Your card is charged every month on the same date by our payment provider until you cancel. No contract and no cancellation fee: cancel anytime from your account and keep access until the end of the period you paid for. If the price changes, we email you at least 30 days in advance. Prices are in US dollars; your bank may add foreign transaction fees.
Changed your mind? Email contato@navega.tec.br within 7 days of your first payment and we refund it in full. After that, cancelling stops future charges and the current month is not refunded. Nothing here limits rights you have under the consumer laws of your country.
You receive a receipt by email for every payment. Need the receipt in a company’s name? Add it at checkout or write to financeiro@navega.tec.br.
We use your email to give you access, run your account and, if you opt in, send pricing tips. Card details stay with the payment provider; Navega never sees or stores your card number. See our privacy policy.
Don’t resell access, copy the calculator or its fee tables, or use bots to extract data in bulk. We may suspend accounts that do. The brand, code and organized fee tables belong to Navega.
If these terms change, we email you and post the new version here with its date. These terms are governed by the laws of Brazil, with venue in São José do Rio Preto (SP), without prejudice to mandatory consumer protections in your country.