Automotive Calculation Tools

Our flagship multi-variable calculator. Enter price, trade-in, sales tax rate, doc fees, and DMV charges to compute your total drive-away figure with every line of math shown.

Focuses purely on state and local motor vehicle sales tax liabilities, taxable versus non-taxable fees, and manufacturer rebate taxation rules.

Determines your exact sales tax savings from trading in a vehicle across the 42 credit states, comparing dealer trade-in value against private sales.

IRS Schedule C business vehicle interest deduction calculator for self-employed individuals, independent contractors, and small business owners.

Compares current auto loan terms against prospective refinancing offers to calculate monthly payment reductions and total lifetime interest savings.