The AZEO method, with the math and the trade-offs shown

AZEO stands for “all zero except one,” and nobody at FICO invented it. The term was popularized on consumer credit forums, the myFICO community in particular, where members compare score pulls after changing one balance at a time and post what they see.

Before you rearrange your payments around it, know what it is: a practitioner technique. FICO has never published it, and FICO has never said how many points it’s worth. What FICO has published are the two ideas underneath it, and those are solid enough to explain why it tends to work.

The two signals AZEO is built on

The first is the number of cards carrying a balance. FICO’s description of the amounts-owed category says, “A larger number of accounts with amounts owed can indicate higher risk of over-extension.” VantageScore says its models “penalize you for having too many accounts with balances over zero dollars.” Fewer cards reporting a balance is better, by both companies’ accounts.

The second is that zero isn’t the best answer either. A 2022 myFICO release said a 0% utilization ratio “won’t cause your FICO Scores to drop significantly,” but “can prevent you from achieving maximum points” in the amounts-owed category. myFICO’s page on amounts owed makes a similar point: in some cases, low utilization helps more than not using any of your available credit.

Put those together and you get the all-zero-except-one pattern: the fewest cards possible with a balance, without falling to zero. The hard part is doing it without wasting cash or missing a closing date.

A worked example with three cards

Say you have three cards and you pay them all in full each month, but the statement balances report before you pay.

Now compare three ways of handling next month’s statements. Each one assumes you make the payment before that card’s closing date, so the lower balance is the one that reports.

The arithmetic works like this. Paying each card to 6% means $8,000 × 0.06 = $480, $4,000 × 0.06 = $240 and $3,000 × 0.06 = $180, a total of $900, so you send $2,700 minus $900 = $1,800 early. For AZEO, you leave $150 on Card A (about 1.9% of its limit) and pay B and C to zero. That’s $1,050 + $900 + $600 = $2,550 paid early, and $150 divided by $15,000 is 1% overall.

The jump from the “6% everywhere” row to the AZEO row costs $750 more in early payments. In exchange, two fewer cards report a balance and the overall ratio drops from 6% to 1%. We can’t tell you the point difference, because FICO doesn’t publish it, and forum results vary from file to file.

Getting the timing right

Everything in AZEO depends on closing dates. Every card has its own, and the payment has to post before that card’s cycle closes, not before the due date. If you’re shaky on the difference, read statement closing date vs. due date first.

Sticking with the example, suppose Card A closes on the 5th, Card B on the 12th and Card C on the 22nd.

1. Around the 1st, pay Card A down so about $150 will remain at the close. Don’t charge anything else on it for those few days.
2. Around the 8th, pay Card B to $0 and stop using it until after the 12th.
3. Around the 18th, pay Card C to $0 and leave it alone until after the 22nd.
4. Pay whatever each new statement shows by its due date. For B and C, that should be nothing. For A, it’s the $150.
5. Check each bureau report after all three cards have reported, to confirm they show what you planned.

Forum members generally recommend letting a regular bank card carry the one balance rather than a store card or a line of credit, as in the 2018 myFICO forum thread cited below. That’s community advice rather than a FICO rule, though it costs nothing to follow.

When AZEO is worth the cash, and when it isn’t

AZEO only shapes the balances that report this cycle. Most scores in use today look at your latest balances only, so the effect lasts exactly as long as you keep doing it. So the only real question is whether anyone will pull your score in the next month or two.

Usually worth it:

• You’re applying for a mortgage, auto loan or other major credit soon, and the payoff money is cash you’d spend on the cards anyway.
• You’re close to a lender’s score cutoff or pricing tier, where a few points could change your rate. See paying down balances before a loan application for the lead-time math.
• You already pay in full, so AZEO only shifts payments a few weeks earlier rather than costing you anything new.

Usually not worth it:

• No application is coming. A month of AZEO that nobody pulls is effort with no return.
• Doing it would drain your emergency fund. A slightly better score doesn’t help if one surprise bill pushes you back onto the cards.
• You carry balances that charge interest. Paying the highest-rate card first saves real money, and it lowers your utilization along the way. Debt snowball vs. avalanche covers how to order those payments.

Newer scores add a wrinkle. FICO 10T and VantageScore 4.0 use trended data, meaning balance history over time rather than one snapshot. How those models treat a single AZEO month hasn’t been published, so don’t assume it carries the same weight there.

The “all zero” concern

The worry is that if every card reports $0, the score dips slightly compared with having one small balance. myFICO’s own wording backs the direction of that concern, a 0% ratio can miss maximum points, while saying it won’t cause a significant drop. Forum members have posted small drops when all their cards reported zero, but those are individual anecdotes.

If one card accidentally reports $0 and your score dips, nothing permanent happened. Let a small balance report next cycle and, in most score versions, the dip goes with it.

A trickier version of the same problem: if you stop using all your cards for a long stretch, an issuer may eventually close one for inactivity. That’s a much bigger issue than a zero-balance month, and keeping unused cards from being closed explains how to prevent it.

Your next steps

1. List each card’s limit, current balance and closing date.
2. Decide whether an application is coming in the next 60 days. If not, a simple low-balance habit is enough.
3. If yes, pick the one card to carry a small balance, usually a general-purpose bank card with a decent limit.
4. Schedule payments a few days before each closing date, then pay each statement by its due date.
5. Use the utilization planner to compare an AZEO month against paying each card down evenly before you commit the cash.