Ballpark Tax: Free tax calculators for US freelancers. No signup.

Hey Product Hunt! I'm Muhammad, a software engineer. I built Ballpark Tax because working out what a US freelancer actually owes shouldn't need an email signup, hidden math or an accounting-app funnel. It should answer "how much do I set aside?" in ten seconds. What's inside: - Quarterly tax estimator: enter your profit, get what to set aside each quarter, your SE tax and your real effective rate - Freelance hourly-rate calculator that works backwards from the take-home you want - S-corp break-even, home office, mileage, 1099 vs W-2, estimated-tax penalty and more - Plain-English guides that put the short answer first - Every calculator is embeddable on your own blog, free No signup, and everything runs in your browser. It's built on 2026 IRS figures (brackets, standard deduction, the new tips deduction). I'd love feedback, especially on anything confusing or missing. State taxes are next on my list. Which calculator should I build after that?