Glossary

If you are refinancing for the first time, these terms explain where costs can hide and what matters most when comparing scenarios.

TL;DR (if you only check three things)
  1. Your payoff amount (not just the balance).
  2. The total fees (and whether they are rolled in).
  3. The break-even (and total cost, not payment alone).
One quick example (fees and break-even)

If fees are $900 and the new payment saves you $30 per month, break-even is about 30 months. If you think you might sell the car or pay off the loan before then, refinancing may not help.

Loan basics
APR

The interest rate on your loan expressed per year. Higher APR generally means you pay more interest over time.

More

Why it matters: A lower APR can reduce interest, but it may not help if fees are high or the term extends.

Term

How long the loan lasts, usually measured in months (for example, 36 or 72).

More

Why it matters: A longer term often lowers the payment but can increase total cost because you pay interest for longer.

Principal

The amount of money you still owe before interest. Your balance is mostly principal.

Interest

The cost of borrowing money. Each month, interest is calculated using your remaining balance and APR.

Payoff amount

The amount your lender says you must pay to fully close the loan today. It can be different from your balance due to per-diem interest or fees.

More

Why it matters: Refinancing decisions are more accurate when you use payoff instead of a rough balance number.

Common fee terms
Fees

Costs charged to start a new loan (origination, processing, title, documentation). Fees can be paid upfront or added to the new loan balance.

More

Why it matters: Fees can delay or erase the benefit of a lower APR. They are a major driver of break-even.

Origination fee

A fee some lenders charge to create the new loan. It is separate from interest.

More

Why it matters: Origination fees increase the cost of refinancing and can push break-even farther out.

Processing fee

A fee charged for handling the refinance paperwork and setup. Names vary by lender.

More

Why it matters: Even small processing fees reduce the net benefit and affect break-even timing.

Documentation fee

A fee for preparing and filing documents for the new loan. Sometimes called an admin fee.

More

Why it matters: It adds to total fees. Ask whether it is paid upfront or rolled into the loan.

Title / registration fees

Fees related to updating the vehicle title or registration when a new lender is added. These can be state-dependent.

More

Why it matters: They can be real costs even if the lender’s own fees are low.

Per-diem interest

Daily interest that accrues between payments. Your payoff amount can include per-diem interest up to the payoff date.

More

Why it matters: This is one reason your payoff amount can be slightly higher than your current balance.

Eligibility and constraints
LTV

Loan-to-value. It compares what you owe to what the vehicle is worth. Example: owing $12,000 on a $10,000 car is a high LTV.

More

Why it matters: High LTV can limit refinance eligibility or increase pricing, depending on lender policies.

Break-even

The point where monthly savings have paid back the upfront costs (fees). Before break-even, you may be worse off; after break-even, savings may be real.

More

Why it matters: If break-even is far out, refinancing may not help soon. If break-even does not exist, fees may never be recovered through monthly savings.