Finance · vehicles

Car Finance Calculator

UK hire purchase & PCP, US auto loans — payment, interest, balloon, and the full schedule.
United States · $
60-month loan
Region United States and United Kingdom. US auto loan, or UK hire purchase and PCP with a balloon / guaranteed future value — choose the region in the tool.

Set-up

auto loan

› Fees & extras
Negative equity: if you still owe more than the trade-in is worth, the gap is rolled into the new loan.

Payment

this deal

Balance over time

amortisation
Principal paid Interest paid Remaining balance hover the chart
Important Not financial advice. Every figure here is an illustrative estimate for general information and education. It is not financial, investment, tax, mortgage or legal advice, not a personal recommendation, and not a quote or an offer. Rules of Thumb is not authorised or regulated by the Financial Conduct Authority and does not carry out regulated activities. Rates, fees and thresholds change and may be out of date. Before acting on anything here, speak to a qualified financial adviser, mortgage broker, accountant or your lender, who can take your own circumstances into account. See the Terms of Use.
Compare

Same deal, different terms

tap a card to apply that term
Detail

Payment schedule

by year
Period Payment Principal Interest Balance
How it works

How to read a car finance estimate

The payment

The same fixed-rate amortisation as a mortgage. P is the amount financed after deposit, tax, fees and trade-in; on PCP the balloon is left off that slice.

US loan or UK HP/PCP

Pick a region first, then set price, deposit, APR and term. Open Fees & extras for trade-in payoff and arrangement fees.

The PCP balloon

A UK PCP looks cheap because a large optional final payment sits at the end. You still pay interest on the amortising slice, and the balloon is due if you want to keep the car. Treat it as money you owe, not a discount.

20 / 4 / 10

A common US rule: 20% down, no more than 4 years, and total car costs under about 10% of gross income. Strict, but it keeps you out of long underwater loans.

Worked example. US: a $32,000 car with 10% down and 7% sales tax finances about $31,040; at 6.5% APR over 60 months the payment is about $607 a month. UK PCP: a £22,000 car with a 10% deposit and a 40% balloon amortises roughly £11,000, so the monthly looks far lower than hire purchase, but the optional final payment is still due if you keep the car. Blue is the deposit, amber the balloon, green the part you pay off monthly.
Field notes

Car finance heuristics

72–84months

Never finance longer than you keep it

If you swap cars every three years, a long loan almost guarantees negative equity at trade-in. Match the term to how long you will actually drive it.

Cheap monthly is not cheap

A longer term or a bigger balloon lowers the payment, and raises the interest. Compare the term cards for the trade-off, and expand the schedule for year-by-year totals before you choose on the monthly figure alone.

Questions

What people ask

How is the monthly payment calculated?

Standard fixed-rate amortisation on the amount financed: monthly rate r = APR/12, term n months. Interest is charged on the remaining balance, so early payments are mostly interest.

What is the difference between UK HP and PCP?

Hire purchase finances the whole amount after deposit — you own the car when the term ends. PCP leaves a balloon (GFV) unpaid during the term so monthly payments are lower; at the end you pay it, refinance, or return the car under the contract.

Does sales tax get financed in the US?

Often yes — many dealers roll state/local sales tax into the amount financed. This tool adds tax on the vehicle price by default for the US region; set the tax % to zero if you pay it up front.

What about leases?

Leases use residual value and money-factor pricing, not the same amortisation as a loan. This page covers purchase finance (loan / HP / PCP), not closed-end leases.

What's not included?

Credit-score pricing, dealer mark-ups, insurance, fuel, maintenance, early settlement fees, PCP mileage excess, GAP insurance, and tax treatment. Your lender's illustration is the figure that matters.

Is this financial advice?

No. It is a reference calculator. Real offers depend on credit, dealer, fees, insurance, and (for PCP) contract mileage. Verify with your lender before you sign.

Results are for reference only. This is not financial advice — verify any numbers you rely on with a lender, advisor, or independent calculator before acting on them.
Version history · 1 release
  1. v0.992026-07-28Car Finance early settlement; Debt Payoff lump sums. Completes the three requested

Releases in which this page changed, newest last. Derived from the archived copy of every release, not from notes written afterwards — so it reflects what actually shipped. Site-wide passes are left out; they are in the full changelog.

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