Launching today
OTDMath
See what a car really costs out the door, by US state
2 followers
See what a car really costs out the door, by US state
2 followers
A car's sticker price is never what you pay. This calculator itemizes the out-the-door price in all 50 US states: sales or use tax by county, trade-in rules, title, registration and doc fees, each line linked to its official source. Free, no sign-up, runs in your browser.
Free
Launch Team
Render Sandboxes: a computer for every agentIsolated compute, persistent state and a real filesystem
Promoted
Hi Product Hunt! I'm Adrián, a student from Spain.
I built OTDMath after noticing that the price on a US car listing is never what you actually pay. Tax, title, registration and dealer fees get added at the end, and every state does it differently. A few that surprised me:
• California taxes the full price even if you trade in a car
• Florida's county surtax only applies to the first $5,000
• North Carolina doesn't use sales tax on cars: it charges a 3% highway use tax
So I made a calculator that follows each state's real rules and shows the out-the-door price line by line, with a link to the official source for every rate. It covers all 50 states, it's free and there's no sign-up.
I built it with a lot of help from AI tools and spent most of my time checking the numbers against the official sources. If something looks off for your state, please tell me and I'll fix it the same day.