If your FICO is sitting somewhere in the low 500s, almost every "raise your credit score" guide on the internet is written for someone else. Those articles assume you have three open cards in good standing and a paid-off auto loan in the background. You don't. You have a payday loan default, maybe a medical collection, a couple of late payments that hit during a bad stretch, and a credit report that looks like a crime scene.

That's the file we're working with. And the plan that follows is built for it.

About 16% of US consumers have a FICO under 580 according to Experian's State of Credit data, so if you're in this range, you're not unusual. You're just in the group nobody writes for. Over the next 90 days, you can realistically move from the low 500s into the high 500s or low 600s if you follow the calendar below. Not because of any trick. Because the levers that move a damaged file are different from the levers that move a healthy one, and almost nobody sequences them correctly.

First, Get the Right Score

Before you spend a dollar or send a single letter, you need to know which number we're actually trying to move.

Credit Karma shows you a VantageScore 3.0, which is a credit score model run by the three bureaus. About 90% of top lenders pull a FICO score instead, according to FICO's own disclosures. The two numbers can sit 30 to 80 points apart on the same report. That's the source of half the confusion in credit forums: "Credit Karma says 580 but Capital One pulled 510." If your score just moved in a direction you can't explain, our six-suspects diagnostic for sudden score drops walks through the likely causes.

You want to track the FICO. The easiest free way is through a card you already have (Discover's Credit Scorecard and many Capital One accounts show your FICO 8 free), or through Experian's free FICO 8 view at experian.com. Pick one, write down today's number, and stop checking it more than once every two weeks. Checking your own score doesn't lower it, but watching the number daily will make you do something stupid.

Pull All Three Reports for Free This Week

Go to annualcreditreport.com. Since 2023, the three bureaus (Equifax, Experian, TransUnion) made weekly free reports permanent. You can pull all three right now, no card required.

Print them. Real paper, or at least a PDF you can mark up. You're going to triage every line.

Week 1 to 2: Triage Your Report (The 4-Bucket System)

Every negative item on your report goes into one of four buckets. Get this sort right and the rest of the plan almost runs itself.

  • Pay: Active accounts that are current or recently late. Get these current first, no exceptions. Payment history is 35% of your FICO, the single biggest factor.
  • Dispute: Anything inaccurate. Wrong balance, wrong date, account that isn't yours, a paid collection still showing as unpaid, a duplicate of the same debt sold twice. Under the Fair Credit Reporting Act (FCRA) Section 611, the bureaus have 30 days to investigate.
  • Wait: Old negatives that are within a year or two of falling off. Most negative items drop after 7 years from the original delinquency date. If a collection is 6 years and 4 months old, do not call them. Do not write them. Do not acknowledge the debt. Wait.
  • Ignore (for now): Time-barred debts where the statute of limitations to sue has passed. SOL on unsecured debt runs 3 to 10 years depending on your state. Paying or even acknowledging a time-barred debt can restart the clock in some states. Talk to a legal aid attorney before you touch one.

One special case: medical collections. The three bureaus removed paid medical collections and unpaid medical under $500 starting in 2022 and 2023. The CFPB finalized a rule in January 2025 to remove medical debt from reports altogether, but that rule has been tied up in court. Check the current status before you assume a medical line is gone. If a medical collection over $500 is still on your report, dispute it for accuracy first (medical billing is notoriously sloppy), and only consider paying after you've confirmed the amount and the original date of service.

Week 3 to 4: Open the Right New Tradeline

If your only open accounts are charged off or closed, your score has nothing recent and positive to count. That's a problem you fix by adding one (and only one) new tradeline this month.

The combo that works for a damaged file:

  • One secured credit card. Discover, Capital One, Citi, and Self all offer secured cards with $200 to $300 minimum deposits. They report to all three bureaus. CFPB credit-builder research has shown on-time use can lift a thin or damaged file by 40 to 100 points within 6 to 12 months.
  • One credit-builder loan. Self, Kikoff, and most local credit unions offer small installment loans where you "pay" into a locked savings account. The on-time payments report, and you get the cash at the end. This adds an installment trade line, which helps your credit mix (10% of FICO).

That's two new accounts. Stop there. Every additional application is a hard inquiry, and clusters of inquiries on a damaged file look exactly like what they are: someone scrambling for credit. If a payday default is what put you here, the 12-month payday-default rebuild roadmap goes deeper on the construction phase.

Week 5 to 8: The Utilization Move That Adds 20 to 40 Points in 30 Days

Utilization is the percentage of your available credit you're using on revolving accounts (credit cards, mostly). It's 30% of your FICO and it's the fastest-moving factor on the board. Pay history is heavier, but pay history takes months to rebuild. Utilization can shift in a single billing cycle.

The target: under 30% on every card and overall, ideally under 10%. People with 800+ FICOs typically sit under 7% (Experian data).

Here's the move. Your secured card has, say, a $300 limit. If you let a $250 balance report at the end of the cycle, that's 83% utilization on that card. Score impact: ugly. Instead, pay the card down to about $10 before the statement closing date (not the due date, the closing date). When the bureau gets the report, your utilization on that card is roughly 3%. Score impact: clean.

You can pull this off even if you're using the card all month. The trick is timing the payment to land before the statement closes, not after.

One nuance: don't let every card report a $0 balance. The scoring models actually like to see one card report a small balance (the "AZEO" trick credit nerds use: All Zero Except One). With only one or two cards, just keep the one card at a small reported balance and you're done.

Week 9 to 12: Goodwill Letters and Pay-for-Delete

Now we go after the older negatives. These plays are not guaranteed by any regulation. They work some of the time, with some creditors, depending on who opens your letter that day. They cost you a stamp and an hour, so the expected return is positive even at a 20% hit rate.

Goodwill letter. For a late payment on an account you've since brought current (or paid off). You write the original creditor, take responsibility, give a short reason (job loss, medical, divorce, deployment), and ask them to remove the late mark as a goodwill gesture. Capital One and Credit One are documented in MyFICO forums as occasionally agreeing. Chase and most banks rarely budge. Cost to try: zero.

Sample script:

Dear [Creditor], I am writing to request a goodwill adjustment on my account ending in [last 4]. I had a 30-day late payment in [month/year] during a period when I was dealing with [brief reason]. I have since brought the account current and have maintained on-time payments. I am working to rebuild my credit and would deeply appreciate your willingness to remove the late notation as a goodwill gesture. Thank you for considering this request.

Pay-for-delete. For collection accounts (not original creditors). The collector agreed to delete the line in exchange for payment, in writing, before you pay a dime. Many third-party collectors will do this because they own the debt outright and the credit report is leverage, not revenue. Original creditors almost never agree, because their FCRA reporting policies typically prohibit it.

Get the agreement in writing first. If they refuse to put it in writing, do not send the money on a phone promise.

What Not to Do in 90 Days

The plan above has just as much to do with what you skip as what you do.

  • Do not close old credit cards. Even if you don't use them. Length of credit history is 15% of FICO, and closing your oldest account shortens the average age. If a card has a fee, downgrade it. Don't close it.
  • Do not become an authorized user on a stranger's card. The "AU tradeline" market used to work; FICO 8 and newer models have largely shut it down. Family member with a clean 20-year card? Sure, that still helps. A $400 spot on Craigslist? Waste of money.
  • Do not pay old, time-barred debts blindly. See the earlier note on statute of limitations. A bad move here can restart the legal clock and make you suable for a debt that was already untouchable.
  • Do not sign up for paid credit repair. They cannot legally do anything you can't do yourself under the FCRA. They charge for stamps.
  • Do not apply for a car loan, mortgage, or new credit card mid-plan. Hard inquiries on a thin file hurt more than on a thick one. Wait the 90 days.

What Your Score Should Look Like at Day 90

Realistic outcomes if you follow the plan from a starting FICO of 520:

  • Best case (clean disputes successful, two new tradelines reporting, low utilization, one goodwill win): mid 600s
  • Likely case (some disputes work, tradelines reporting on time, utilization fixed): high 500s to low 600s
  • Floor (disputes mostly denied, but tradelines are clean and utilization is fixed): mid to high 500s

Anyone promising a guaranteed 100-point jump in 90 days is selling you something. FICO and the CFPB both refuse to publish point-prediction tables for a reason: the math depends on which exact negatives are on your file and how the model weighs them.

Your single action this week: pull all three reports at annualcreditreport.com and sort every negative line into one of the four buckets. That sort, more than anything else in this article, decides what happens over the next three months.

Frequently Asked Questions

How fast can my credit score realistically go up from 520?

Most people who follow a disciplined 90-day plan see a 40 to 80 point lift, putting them in the high 500s to low 600s. Bigger jumps happen when a successful dispute removes a major negative, or when a maxed card gets paid down to under 10% utilization. Triple-digit jumps in 90 days do happen, but they're the exception, not the plan.

Will paying off a collection raise my credit score?

It depends on the scoring model. FICO 9 and FICO 10, plus VantageScore 3.0 and 4.0, ignore paid collections (so paying helps). Older FICO 8 still counts paid collections as negatives, just less harshly than unpaid ones. Most mortgage lenders still pull FICO 8 variants, so the lift may be smaller than you'd hope. The bigger win is usually negotiating a pay-for-delete in writing before you pay.

Should I pay or dispute an old collection?

Dispute first if anything on the line is wrong (amount, date, original creditor). Bureaus have 30 days to verify under the FCRA. If they can't, it gets deleted. Only after a dispute fails should you consider paying, and only with a written pay-for-delete agreement in hand.

How long do payday loans stay on my credit report?

Most payday loans aren't reported to the major bureaus at all unless they go to collections. Once a payday loan is sold to a collector and reported, it stays on your file for 7 years from the original delinquency date, same as any other unsecured debt.

What's the fastest credit-building product for someone starting from 500?

A secured card from a major issuer (Discover, Capital One, Citi) paired with a credit-builder loan from Self or a local credit union. Together they cover the two main holes in a damaged file: no revolving account in good standing, and no recent installment trade line.

Do secured cards actually work?

Yes, with discipline. CFPB credit-builder research shows on-time use of a secured card lifts thin and damaged files by 40 to 100 points in the first 6 to 12 months. The catch: you have to keep utilization low and never miss a payment. A missed payment on a secured card hurts your score just as much as a missed payment on any other card.