Which Debt to Pay Off First: Five Rules That Beat the Rate

The default answer is the highest interest rate, and it is right most of the time. On a realistic four-debt portfolio, paying by rate rather than by balance saves $998 and one month.

But five situations override the rate, and they are where people actually go wrong.

The default, and what it is worth

Pay minimums on everything, send every spare dollar to the highest-APR debt, and roll that payment into the next highest when it clears.

The alternative — smallest balance first — costs about $998 on a $22,000 portfolio and delivers a completed debt sooner, which matters if you have abandoned a payoff plan before. Full comparison: the snowball and avalanche comparison.

Either way, the ordering is worth around a thousand dollars while the payment amount is worth around fourteen thousand. Decide in five minutes and move on.

Override 1: A deadline beats a rate

A 0% promotional balance expiring in four months goes first, regardless of its position by rate. When the promo ends, the go-to rate applies to whatever is left — so the effective cost of not clearing it before the deadline is much higher than its current 0%.

Same logic for any arrangement that lapses: a hardship program with an end date, a payment plan with a deadline, a settlement offer with an expiry.

Override 2: A secured debt you need beats a rate

A car loan at 7% goes last by rate. If you are behind on it, it goes first — losing the car that gets you to work to save interest on a credit card is not optimization.

Rule: any debt where non-payment costs you an asset you need moves to the front of the queue, whatever its rate. See when the car loan comes first.

Override 3: A payday or title loan beats everything

Payday and title loans operate at effective rates that are not comparable to anything else on your list, and title loans are secured by your vehicle. The cycle also renews, so the balance does not simply sit there.

These come first, full stop, and getting out of the cycle takes priority over the rest of the plan. See why payday loans jump the queue.

Override 4: A debt with a co-signer

Almost nobody mentions this and it causes real damage.

If someone co-signed for you — a parent on a private student loan, a relative on a car — their credit is being affected by your payment history, and they can be pursued for the balance. That is a cost the interest rate does not capture.

Where a co-signed debt is at risk of delinquency, it deserves priority above its rate. Not because the arithmetic says so, but because the consequence lands on someone who trusted you.

Override 5: A debt already in litigation

A debt that has been sued on outranks a higher-rate debt that has not, because the outcome is not interest — it is a judgment, wage garnishment and a bank levy.

The first move there is not payment, it is filing an answer before the deadline on the summons. See a debt that is already in litigation.

Common pairings, answered

Credit card or car loan? The card, in nearly every case — cards typically run 20%+ and car loans far less. Unless you are behind on the car.

Student loans or credit cards? Credit cards. Federal student loans carry lower rates plus income-driven repayment, forbearance and forgiveness options that credit cards do not. Paying them ahead of a 25% card is a costly mistake, and it is a common one because student loans feel more serious.

Collections or current accounts? Current accounts, generally. Paying an old collection does not necessarily improve your score, may restart the statute of limitations in some states, and does nothing about the interest accruing on a live card. The exception is a mortgage application requiring collections resolved.

Medical bills or credit cards? Credit cards. Medical debt usually carries no interest, has specific credit reporting protections, and hospitals have financial assistance programs. Never move a medical bill onto a credit card — that converts a 0% obligation with consumer protections into 25% revolving debt without them.

Small balances or high rates? High rates, unless you have quit a payoff plan before.

If the goal is the credit score rather than interest

Different answer entirely: pay down the card closest to its limit. Per-card utilization matters, so bringing one maxed card down often helps more than spreading the same money across three. See if the goal is the score instead.

These two goals genuinely conflict. Pick one before you start.

And if you cannot cover all the minimums

Then this is not the right question — the priority is essentials, not optimization. See if you cannot cover all the minimums.

How much the ordering is worth at every payment level, not just one

This page says the ordering is worth around a thousand dollars and the payment amount around fourteen thousand. Both claims came from a single run. We re-ran the same four-debt portfolio at 29 different monthly outlays, from the bare minimums up to seven hundred dollars a month extra, and measured both quantities at every one of them. The claim survives, with a sharper shape than a single figure can carry.

The ordering is bounded. Across all 29 levels the avalanche never beats the snowball by less than $134.28 or by more than $1,019.79. That is the whole range: there is no budget on this portfolio at which the choice of order is worth two thousand dollars, and none at which it is worth nothing. The published $998 sits near the top of that range, not in the middle of it, because it assumes an extra payment of $275 a month.

The payment amount is not bounded in the same way. Moving from the minimums to the top of the band cuts the interest bill from $22,191.59 to $5,067.13—a difference of $17,124.46, close to seventeen times the largest amount the ordering was ever worth. It also cuts the payoff from 85 months to 22. So the ranking this page gives is right, and now it has a measured margin rather than a rounded one.

Extra per month	Snowball	Avalanche	Worth of the ordering	Worth of the last 25 a month
$0	85 months, $22,191.59	84 months, $22,057.31	$134.28	—
$25	76 months, $19,385.59	75 months, $18,837.07	$548.52	$2,806.00
$50	68 months, $16,994.84	67 months, $16,508.00	$486.84	$2,390.75
$100	58 months, $14,102.03	57 months, $13,284.17	$817.86	$1,282.96
$150	51 months, $12,149.57	50 months, $11,171.50	$978.07	$893.88
$225	43 months, $10,120.48	42 months, $9,100.69	$1,019.79	$589.46
$275	39 months, $9,125.69	38 months, $8,127.34	$998.35	$470.13
$400	32 months, $7,355.62	31 months, $6,451.17	$904.45	$292.44
$700	23 months, $5,067.13	22 months, $4,378.72	$688.41	$134.22

Where one more twenty-five dollars a month stops beating the ordering

There is a crossover, and it is the practical part. At the bottom of the band the payment amount wins by a mile: the first twenty-five dollars a month takes $2,806.00 off the interest bill, while switching order at that point is worth $548.52. Five times as much for the same decision, and the decision is easier.

It stops being true at $150 extra a month. There, one more twenty-five-dollar step is worth $893.88 and the ordering is worth $978.07—the ordering pulls ahead of the marginal step and stays ahead for the rest of the band. Which is the honest version of the advice on this page: if you have not yet found any spare money, find it before you sequence anything. Once your outlay is well above the minimums, the sequence is worth more than the next small increase, and it is worth getting right. Neither reading changes the five overrides above, because a deadline, a repossession or a lawsuit is not priced in interest at all.

The ordering matters less in dollars and more in percent, at the same time

One number moves the opposite way from the other, and that is why a single dollar figure was always going to mislead. Measured against the interest you actually pay, the ordering’s weight rises steadily: 0.61% of the avalanche’s interest at the minimums, 11.21% at $225 extra, 15.4% at $600 extra, 15.72% at the top of the band. Measured in dollars it peaks and declines. Nothing is inconsistent: a fast payoff has a small interest bill, so a small dollar edge is a large slice of it.

What this means for a decision. If your plan is slow, the ordering is a rounding error and the interest bill is the emergency. If your plan is fast, the ordering is a real share of what is left, but the amounts involved are small because you already did the expensive thing right. The trap is quoting one dollar figure for the ordering and treating it as a property of the method rather than of your budget. The full plan those orderings sit inside is how to get out of debt. What the minimums alone cost is set out in the minimum payment trap.

Extra per month	Months to zero, avalanche	Avalanche interest	Ordering edge	Edge as share of interest paid
$0	84	$22,057.31	$134.28	0.61%
$100	57	$13,284.17	$817.86	6.16%
$225	42	$9,100.69	$1,019.79	11.21%
$275	38	$8,127.34	$998.35	12.28%
$400	31	$6,451.17	$904.45	14.02%
$600	24	$4,893.13	$753.45	15.40%
$700	22	$4,378.72	$688.41	15.72%

How this was measured, and what one portfolio cannot settle

The engine runs both orderings on the same four debts at a constant monthly outlay: the sum of the minimums plus a fixed extra, every live minimum paid, the remainder to the target, and the whole payment cascading to the next target when a debt clears. Only the choice of target differs between the two runs. We repeated that pair at every extra payment from zero to seven hundred dollars a month in twenty-five-dollar steps, which is where the 29 levels come from.

Two caveats belong in the reading rather than in the footnotes. The crossover at $150 is a property of this portfolio’s rate spread, not a law. And the interest saved by a twenty-five-dollar step shrinks as the payoff shortens, so the last column of the table is a marginal figure, not a running total: the cumulative worth of the outlay is the $17,124.46 at the top of this section.

Source	PayoffPath’s own amortization engine, run on the four-debt portfolio published in our snowball and avalanche comparison; the engine’s default card rate is the Federal Reserve series TERMCBCCINTNS
What we asked it	Snowball and avalanche on the identical portfolio at 29 constant-outlay levels, extra payment from zero to seven hundred dollars a month in twenty-five-dollar steps, reading months to zero and total interest for every run
Data as of	Portfolio as published in August 2026; engine run 2026-09-02
Retrieved	September 2, 2026
Assumptions	Monthly compounding at APR divided by twelve, while a real issuer compounds daily on the average daily balance; no new charges after the first month; no annual, late or over-limit fee; the payment is applied on the statement date; minimum payment floor of 35 dollars; the extra payment is identical every month and never missed
How to repeat it	Set the four balances, APRs and minimums, fix a constant monthly outlay, run the sequence once by smallest balance and once by highest APR, then repeat the pair at each extra payment level and subtract the two interest totals

What this does not say.

• One portfolio, four debts. A wider rate spread makes the ordering worth more, and a portfolio whose smallest balance is also its highest rate makes the two orders agree at the start, which shrinks the gap toward zero.
• Monthly compounding is not what a card statement does. Daily interest on the average daily balance moves both totals, and it moves them the same way, so the difference between the two orders is sturdier than either total.
• The comparison prices interest and nothing else. It cannot price a promotional rate about to expire, a car you need, a co-signer’s credit file or a summons, which is exactly why the five overrides on this page sit above the arithmetic rather than inside it.
• The crossover between the ordering and one more twenty-five dollars a month is a feature of this rate spread. On your own accounts it will sit at a different payment level, and the only way to know where is to run your own balances.

Frequently asked questions

What debt should I pay off first? The highest interest rate, unless one of five overrides applies: an expiring promotional rate, a secured debt you are behind on, a payday or title loan, a co-signed debt at risk, or a debt already in litigation. On our test portfolio that ordering is worth between $134.28 and $1,019.79 depending on how much you send each month.

Does it matter which debt I pay off first? Yes, but within a narrow band. Measured at 29 monthly payment levels on the same four debts, paying by rate rather than by balance saved between $134.28 and $1,019.79. The amount you send is worth far more: $17,124.46 across that same band.

How much is the order worth compared with paying more each month? At the minimums, the first twenty-five dollars a month is worth $2,806.00 against $548.52 for switching order. That flips at $150 extra a month, where one more twenty-five-dollar step is worth $893.88 and the ordering is worth $978.07. Find the money first, then sequence it.

Should I pay off my credit card or my car loan first? The credit card, in almost all cases, because the rate is far higher. Reverse it if you are behind on the car payment and need the vehicle to get to work, since losing the car costs more than the interest ever will.

Should I pay off student loans or credit cards first? Credit cards. Federal student loans have lower rates and repayment protections, including income-driven plans, forbearance and forgiveness programs, that credit cards do not offer at any rate.

Should I pay off debts in collections first? Usually not. Collections often stop accruing interest, paying may not raise your score, and a payment can restart the limitations period in some states. Live high-rate accounts are the priority unless a lender requires collections resolved.

Should I pay off a co-signed loan first? Give it priority above its interest rate if it is at risk of delinquency, because the damage falls on the co-signer’s credit file and they can be pursued for the full balance. That cost does not appear in any interest calculation.

This article gives a general prioritization framework using calculated arithmetic. Not individual financial advice; your rates, terms and circumstances determine the right order.