The market's tax
on your mortgage.
Between a 620 and a 760, the cost of the same house differs by $60K+ over 30 years. Most of that spread is movable in 90 days if you know the two levers that matter. Here's which two.
What FICO
is actually measuring.
Credit is the tax the market charges you.
A 620 FICO and a 760 FICO buying the same $300K house with the same down payment pay different rates, different PMI, and different LLPA pricing hits. On a 30-year, the spread can exceed $60,000. The score isn't vanity — it's the coupon on a 30-year bond you're issuing to yourself.
Only two levers move the score in 90 days.
Credit utilization and on-time payment are 65% of the FICO model. Everything else — age of accounts, credit mix, hard inquiries — is slow. If you're 90 days from a mortgage pull, ignore the slow levers. Dominate utilization and pay every bill on the day it's due.
The 30% utilization rule is wrong. It's 10% for mortgage pricing.
Most articles say keep utilization under 30%. That avoids damage. But to maximize the score on the pull, push utilization below 10% on every individual card and in aggregate. That difference can be 15–40 score points. On a mortgage, that's tier-moving.
A 30-day late resets everything.
One 30-day-late in the 12 months before pull drops your score 60–110 points and disqualifies most conventional pricing. One. Autopay the minimum on every account before you do anything else in this program. It's the single cheapest insurance in personal finance.
Dispute real errors. Don't dispute real debts.
One in five reports has an error. Fixing them can boost 10–40 points. But disputing real debts hoping they fall off — known as a 'frivolous dispute' in FCRA terms — gets flagged, can re-age the account, and tanks your file. We built a dispute guide that covers the exact letter template. Use it.
Five steps.
Points you can measure.
- 01
Pull all three bureaus from AnnualCreditReport.com.
Free, weekly, federally authorized. Not Credit Karma. The bureaus report different data — you need all three.
- 02
Circle errors. Run the dispute flow.
Incorrect balance, account you don't recognize, duplicate tradeline, wrong status. Our dispute guide has the exact letter.
- 03
Drop every card under 10% utilization.
Pay mid-cycle if needed — before the statement closes, not before the due date. The statement-close balance is what reports.
- 04
Set autopay on every minimum.
Not autopay the balance — autopay the minimum. That's the insurance against a 30-day-late during underwriting chaos.
- 05
Run the Credit Impact simulator.
See which move adds the most points for your specific file. Everyone's profile is different — the heuristics tell you where your biggest gain is.
Four moves
that look helpful.
Closing a paid-off card.
Drops your total available credit, spikes utilization on every other card, shortens your average account age. Keep it open. Charge Netflix. Autopay.
Paying a collection before validating it.
Paid collection is still a collection on your report. Sometimes paying re-ages the tradeline. Dispute validity first, then pay-for-delete in writing.
Opening new credit 'to help.'
New tradeline = hard inquiry + drops average age + raises utilization temporarily. Net negative 90 days before a pull.
Trusting Credit Karma's VantageScore.
Lenders pull FICO. VantageScore is usually 15–30 points higher. You can be 'approved' on Karma and denied on the real pull.
Step 02: complete.
On to Pre-Approval.
You have the budget. You have the score. Step 03 is the paperwork that turns a dream into a number a seller takes seriously.