Chapter 7: Cars, BNPL, and the everything-else debt
Gloria and Hank pay $72 a month for a truck they no longer own. Nobody tricked them with fine print. A dealer simply asked one question, "what monthly payment works for you?", and the answer cost them $5,184 over six years. This chapter covers the debt that lives outside cards and student loans: auto loans, buy now pay later, payday and title loans, medical bills, and personal loans. The products differ, but the pattern repeats: the seller frames the price as a payment, and the payment hides the cost.
The dealership sells payments, not prices
Walk into a dealership and you will likely meet the four-square, a worksheet with four boxes: the price of the car, your trade-in value, your down payment, and the monthly payment. The salesperson steers every conversation to the fourth box. That is by design. Any price on earth can be made to "fit your budget" if the loan gets long enough. A $36,000 loan at 9% is $1,145 a month over 3 years and $649 over 6 years. The car and the rate are identical, the total cost is wildly different, and only one of those numbers gets written on the worksheet.
The second quiet profit center is rate markup. When the dealer arranges your financing, the lender quotes the dealer a rate, and the dealer is often allowed to add a point or two on top and keep the difference. You qualify at 7.5%; the contract says 9%; the spread is commission.
The defense takes one afternoon. Get pre-approved at a credit union or bank before you shop, so you walk in knowing the rate your credit actually earns. Then negotiate the out-the-door price, the full cost including taxes and fees, as its own conversation. Let the dealer try to beat your pre-approval afterward. If they can, take it. If they can only beat your payment by adding a year of term, decline.
Negative equity: the debt that outlives the car
Negative equity means you owe more on the car than the car is worth. It is also called being upside down, and with 72 and 84 month loans now common, it is the default condition for the first half of most auto loans. Cars lose value fastest in the early years, while long loans pay down principal slowest in the early years. The two curves spend years apart.
Here is where it compounds. Gloria and Hank owed $18,000 on Hank's truck when the transmission started slipping. The dealer offered $14,000 for the trade. That left $4,000 of loan and no truck, and the dealer had a ready answer: roll it into the next loan. The replacement SUV cost $32,000, so the new loan was written for $36,000 over 72 months at 9%.
| 72-month loan at 9% | Without rolled debt | With $4,000 rolled in |
|---|---|---|
| Amount financed | $32,000 | $36,000 |
| Monthly payment | $577 | $649 |
| Total of payments | $41,544 | $46,728 |
| Total interest | $9,544 | $10,728 |
The rolled $4,000 costs $72 a month for 72 months: $5,184 in total, of which $1,184 is fresh interest charged on a truck that is gone. And the snowball keeps rolling. At month 36 they will owe about $20,400 on an SUV worth roughly $18,500, upside down again by about $1,900 at exactly the moment most people start itching to trade. Each cycle starts deeper than the last. The escape is unglamorous: keep the car, keep paying, and let the loan cross under the car's value around month 44 before you even consider a trade.
Covers the hole if the car is totaled
GAP insurance pays the difference between what your insurer says the car is worth and what you still owe on the loan. If you rolled in negative equity, put little money down, or signed a 72-month or longer term, the hole is real and GAP is rational. Buy it from your auto insurer for roughly $20–60 a year, not from the dealer, where it often costs $500–900 and gets financed at 9% with everything else.
One more auto move that almost nobody uses: refinancing. If you took dealer financing at a marked-up rate, or your credit has improved since you signed, a credit union will often rewrite the loan in under an hour. On a $20,000 balance with 48 months remaining, dropping from 11% to 7% cuts the payment from $517 to $479, about $38 a month and $1,824 over the remaining term, with no change to the car and usually no fee beyond a small title transfer.
BNPL: four small plans, one real debt
Tasha can tell you her three card balances from memory. She could not tell you her BNPL total until she sat down and added it up: $820 across four pay-in-four plans, which means up to eight autopay withdrawals a month landing on staggered dates. Two hit the same Tuesday in March and triggered a $35 overdraft, which cost more than the interest a card would have charged on the entire $820.
Buy now, pay later splits a purchase into four payments over six weeks, usually interest free. The product is not the problem. The stacking is. Each plan looks tiny, no statement ties them together, and the approval check is soft or nonexistent, so nothing stops plan five. For years these plans were invisible to your credit file. That ended in June 2025, when FICO announced scores that incorporate BNPL accounts. The plans now show up, and late BNPL payments can now damage a score the same way a late card payment can.
Run one BNPL plan at a time, and only for something you could have bought outright. When a plan closes, you may open another. If you cannot name your total BNPL balance and every autopay date from memory, you have too many plans, and the fix is a freeze on new ones until the count is one.
The 391% machine
A payday loan is a small cash advance, typically $100–500, due in full on your next payday, with a fee of about $15 per $100 borrowed. On a $400 loan that fee is $60 for two weeks. Multiply that two-week cost across a year and the APR is 391%. The fee only looks small because the clock is short.
The trap is the rollover. The loan is due in full, $460 all at once, two weeks after a moment when you demonstrably did not have $400. Most borrowers cannot clear it, so they pay the $60 fee to push the due date back, and the principal never shrinks. Trace one realistic cycle: borrow $400, roll it over ten times, then finally pay it off on the eleventh due date. That is $60 paid eleven times, $660 in fees, to borrow $400 for about five months. The same $400 carried five months on a 26% credit card, the worst card in Tasha's wallet, costs about $26 of interest. The payday product costs 25 times more.
Title loans are the same machine with your car as collateral, fees around 25% per month (about 300% APR), and a repossession at the end of a bad stretch. Both products get a plain name here: they are priced so that the typical customer cannot escape on time.
Cheaper money exists at every rung
Ask the biller for a payment plan first; many utilities, landlords, and hospitals will split a bill for free. Ask your employer about a paycheck advance. If you belong to a credit union, ask for a payday alternative loan (PAL): $200–1,000, capped at 28% APR plus a fee of at most $20. Even a cash advance on a 26% card, normally a bad idea, beats 391% by a mile. The worst mainstream option is cheaper than the best payday storefront.
Medical debt plays by different rules
Medical debt comes with protections no other debt has, and every protection disappears the moment you pay the bill with a credit card. Medical collections under $500 never appear on your credit report at all. Paid medical collections are removed entirely. Unpaid ones get a long runway before they can be reported. Hospitals, especially nonprofit ones, are required to offer financial assistance programs that can cut a bill sharply at moderate incomes, and most will set up interest-free payment plans if you ask.
Put that same bill on a card and it becomes ordinary card debt at 21% or more, fully visible to your credit report, with every assistance program off the table because, as far as the hospital is concerned, the bill is paid. The order of operations is fixed: request an itemized bill and check it, apply for financial assistance, ask for a zero-interest payment plan, and only then consider any form of borrowing.
Personal loans, the plain tool
A personal loan is the simplest product in this chapter: a fixed amount, a fixed rate, a fixed term of usually 2–7 years, no collateral. Rates run from about 8% with strong credit to 36% with damaged credit. Used well, it consolidates card debt at a lower rate with a forced finish line, which is the Chapter 5 playbook. Used badly, it funds a vacation at 15% and gets sold to you the dealership way, by its comfortable monthly payment. Judge it like every debt in this guide: price, term, total dollars, and what happens to your behavior after the money lands.
Gloria printed the loan contract and highlighted one line: amount financed, $36,000, on a $32,000 SUV. Nobody had hidden it; they just had not looked past the payment box. The plan now is patience. They keep the SUV through the crossover around month 44, refinance at their credit union once their utilization work in Chapter 5 lifts their scores, and the next car gets bought with a pre-approval in hand and a firm rule: negotiate the price, never the payment, and never roll a dime of old car into a new one.
Key takeaways
- Dealers sell the monthly payment because the payment hides the price. Pre-approve first, negotiate the out-the-door price, and treat the term as a cost, not a dial.
- Rolling $4,000 of negative equity into a 72-month loan at 9% costs $72 a month, $5,184 over the term, and leaves you upside down again by month 36.
- BNPL plans are now FICO-visible. Run one plan at a time, and know your total to the dollar.
- A $400 payday loan rolled for five months costs about $660 in fees. The same money on a 26% card costs about $26. Walk the ladder: biller plan, employer advance, credit union PAL, then a card, before any payday storefront.
- Never put a medical bill on a credit card. Assistance programs, payment plans, and the under-$500 reporting rules all vanish when you do.
Sources: FICO BNPL scores announcement · CFPB, Debt Collection · Bankrate, Current Credit Card Interest Rates · Finvest Personal Finance Guide