Five free calculators built around the one thing every freelancer and creator actually cares about: payment fees, late fees, and quarterly tax — all the math that decides your real take-home pay.
See All Tools ↓Click any tool to use it instantly — no account required.
These tools come from a fintech background working in card-processing and payment economics — the same domain these calculators live in. Every formula was written from primary sources (IRS publications, processor fee pages) and verified by hand.
The calculations are transparent. Each tool shows you the exact math, not just the answer. If a rate changes, there's a "last updated" date so you know to check.
About & methodology →Every calculation runs 100% client-side in JavaScript. Nothing is sent to a server, logged, or stored. Refresh the page and it's gone.
Every fee rate includes its source and a "last verified" date. Payment processors change their rates — we tell you when to double-check.
No sign-up. No email. Just open the tool and get your answer.