The whole cost, in plain sight.

The price on the tag is never the whole price. Before you can spend $40,000 on a car, you had to earn more than that — income tax, Social Security, and Medicare all take a cut before the money is even yours to spend. Then sales tax, fees, insurance, and financing interest add more on top. And whatever you didn't spend could have grown if you'd invested it instead.

This site puts all of that in one place, for one purchase at a time, using real published tax rates and cited data rather than rules of thumb — see how it works.

It's free, has no login, and runs its calculations in your browser. Your saved profile stays in this browser. Links can include your chosen numbers — see privacy for how that works, and limitations for what the tools cover.

Written and maintained by the team at How Much It Really Costs, whose core expertise is in finance and accounting. Every figure on the site is computed from a published rate and carries the date it was checked — see sources for where each one comes from.