Start free

Knowledge Hub · Finance & insurance · Foundations · 8 min read

How car financing actually works

Principal, interest, term, buy rate vs. sell rate: where the payment comes from and where the profit hides.

Read the full guide — $49/moAll Hub guides

Free preview · from the dealership side of the desk

The four numbers

Amount financed (price + tax + fees + products − down payment − trade equity), the rate (APR), the term (months), and the payment that falls out of those three. Any salesperson can hit a payment target by moving the term; your job is to watch the other three.

Members read the rest · 4 more sections

In the full guide

  1. Buy rate vs. sell rate
  2. Term
  3. Where profit hides
  4. Your checklist

Knowledge Hub membership · $49/mo, cancel any time

Read the full guide — join the Knowledge Hub, $49/mo, cancel any time

Every guide, checklist and script we use with clients, written from the dealership side of the desk, with new material every month. Start with a free account; you land right back on this guide.

Read the full guide — $49/moAll Hub guides

Cancel in one click; no contract. Members also get the checklists and scripts that go with each guide.

Knowledge Hub membership · $49/month · cancel any time

Get the whole playbook: the FMYCAR Knowledge Hub

Every guide, checklist and script we use with clients, written from the dealership side of the desk, with new material every month. Start with a free account; previews of every guide are free, members read the full versions.

  • The 6 things that decide your trade-in value
  • How car financing actually works
  • The truth about GAP coverage
  • Checklists and the exact words to use at the desk and in the finance office
  • Cancel in one click; no contract

Start free, then join for $49/moLog in

What happens after you join

  1. Instant accessEvery full guide, checklist and script the moment you join.
  2. A guided reading path for your situationFirst car, helping a parent, trade with a loan on it, lease, finance: start where you are.
  3. Upgrade creditHub members get $49 off a Deal Review in their first 60 days, so a month of Hub plus a review costs the same as the review alone.

Professional Deal Review · $249 · one deal

Negotiate your best deal. Then show it to us.

Upload the dealer’s worksheet or buyer’s order and a FMYCAR advisor validates every line (price, trade, fees, rate, term, add-ons) and tells you exactly what to fix before you sign. Typical clients find $800–$3,000 of markup, fees and products they didn’t need; typical, not guaranteed, and if the deal is clean we tell you to sign.

Get my deal reviewed — $249How it works

What happens after you pay

  1. Upload the paperworkPhotos or a PDF of the worksheet, buyer’s order or finance quote, from the dealership if you’re there now.
  2. Advisor review within 1 business dayA human advisor reads every line; usually much faster during business hours.
  3. Written verdict, plus a call if neededSign, fix these first, or walk, with the exact words to use. If the deal changes, re-upload on the same review.

More on finance & insurance

The truth about GAP coverage

When GAP is essential, when it’s optional, and how to avoid paying three times what the coverage is worth. 5 min · preview

What’s a good APR right now?

How banks and dealers price risk, what’s reasonable for your score, and when it’s worth pushing back or shopping around. 5 min · preview

Co-signers and first-time buyer programs: how they work and the risks

What a co-signer actually agrees to, how dealers use one to approve a bigger loan, what manufacturer first-time buyer programs really offer, and the safer sequence. 7 min · preview

All finance & insurance guides

Every Hub guide on this topic, previewed free.

Keep reading

Car loan pre-approval: why and how

Why a credit union usually beats dealer financing and how the buy-rate markup works.

Extended warranties and VSCs, explained

The difference between a manufacturer extension and a third-party service contract, and which one is worth buying. 6 min · preview

First car: what you can actually afford

The 20/4/10 rule, the insurance quote almost everyone skips, and how to turn a monthly number into an out-the-door price before a salesperson does it for you. 7 min · preview

Share this guide

Found this useful? The best thing you can do for us is tell one person who is about to buy a car. Why FMYCAR exists →

Members-only · $49/mo, cancel any timeRead the full guide