The numbers
behind every
auto & EV decision.
32 free calculators for loans, leases, EV costs, and 2026 tax incentives — accurate, brand-neutral, and built for the moment before you sign a contract.
Auto loans & finance.
Monthly payment, affordability, lease vs buy, refinance, and total cost of ownership.
See your monthly payment, total interest, and full amortization schedule in seconds.
Compare the total cost of leasing versus financing the same car.
See the maximum car price you can comfortably afford based on your income.
Electric vehicles.
Charging cost, range, EV vs gas TCO, and 2026 tax incentives including OBBBA and §30C.
Compare the true 5-year cost of owning an EV vs a comparable gas car.
Calculate your annual and total tax deduction under the new federal EV loan interest deduction that replaced the old $7,500 credit.
See if your home EV charger qualifies for the Section 30C credit before it expires June 30, 2026.
Comparisons.
EV break-even mileage, new vs used, sedan vs SUV, and payment-to-income ratio.
Find the annual mileage at which an EV becomes cheaper than a gas car.
Compare the 5-year cost of buying new versus a 2-year-old used car.
See what percent of your income is going to your car — the 10% rule in action.
Rebates, tax credits, HOV access — by state.
Federal EV credits largely expired in 2025. State programs are now the primary purchase-time savings. We track all 50, verified against DOE AFDC.
Built for the decision — not the click.
Most auto calculators online are a lead-gen form dressed up as a tool. We took the opposite approach: deterministic math, cited sources, zero tracking of your inputs.
Deterministic formulas — no proprietary models, no opaque estimates. Same inputs, same output, every time.
OBBBA math, §30C rules, and state incentives reviewed against IRS, DOE, and AFDC primary sources.
Loan amounts, income, MAGI — your numbers never leave your device. No account, no email, no server logs.
Every calculator shows its methodology with the exact formula. If you don't trust the number, verify it in 30 seconds.
Before you dig in.
Ready to run your numbers?
Start with the tool buyers reach for most — the auto loan calculator — or jump straight to the tax incentive that fits.