Credit Scores Work in TIERS, Not Points — 6 Points Could Save You $10,000

Q: What are the credit-score tiers for a mortgage?

Mortgage pricing typically steps at common lines such as 620, 640, 660, 680, 700, 720, 740, and 760. Inside a band, scores often price the same; crossing a line can change your pricing. Exact lines vary by lender and loan program.

Q: How many points do I actually need?

Often far fewer than people think. If you are sitting just below a tier line, you may only need 5 to 10 points to cross it. If you are comfortably inside a band, gaining a few points may not change your pricing at all.

A staircase of credit-score bands with a borrower one step below the next tier line

Most people obsess over their exact credit score like it's a golf score — every point matters. For a mortgage, that's the wrong picture. Lenders don't price you point by point. They price you in tiers. And that one fact means a borrower at 718 can be leaving thousands of dollars on the table that a borrower at 720 picks up — for a two-point difference.

Lenders price in bands, not single points

Mortgage pricing runs on a grid. Your rate and your costs step up or down at specific threshold scores — not smoothly with every point. Inside a band, you're treated the same. Cross a line, and the pricing changes.

The common lines you'll see on many grids look like this:

Typical tier lines
620 · 640 · 660 · 680 · 700 · 720 · 740 · 760

Exact thresholds vary by lender and program, but the principle is universal: pricing steps, it doesn't slide. That changes how you should think about your number entirely.

The 718 vs 700 surprise A 718 and a 700 often price exactly the same — both sit in the same band, so those 18 points bought you nothing. But a 718 to a 720? That tiny two-point hop can cross a line and change your pricing overnight. The points only count when they move you across a threshold.

Think of it like shipping weight 📦

A parcel carrier charges by weight bracket, not by the ounce. A box that's 4 pounds 2 ounces costs the same as one that's 4 pounds 15 ounces — same bracket. But add a single ounce to tip it to 5 pounds 1 ounce and you jump to the next price tier. Trimming weight only saves money when it drops you into a lower bracket. Credit tiers work the same way.

The flip side: if you're just below a line, you may need very little

Here's the empowering part. If your score is sitting just under a tier line — say a 697 staring up at 700 — you may not need a dramatic credit overhaul. You might only need 5 to 10 points to cross. That can sometimes come from something as simple as paying down a card balance before the statement cuts.

That's a completely different project than "raise my score 50 points." Knowing exactly where the nearest line is turns a vague goal into a precise, doable one.

It hits your rate AND your PMI

This is why a small move can be worth so much. Your credit tier can influence two costs at once:

Your interest rate — a better tier can mean a lower rate for the entire life of the loan.
Your private mortgage insurance (PMI) — on lower-down-payment loans, PMI is also priced by credit tier, so a better band can shrink that monthly add-on too.

Crossing the right line can quietly lower both. Stack that savings across hundreds of payments and a few points really can add up to thousands — sometimes five figures — over the loan. (Run your own numbers with our payment + MI calculator and compare scenarios on the down-payment comparison tool.)

How to play it smart before you apply

The strategy writes itself once you see the grid:

Where you sit	Smart move
A few points below a tier line	Focus on that small gap — it may be the highest-return effort you make.
Comfortably inside a band	Don't chase points that won't change your pricing; focus elsewhere.
Unsure where the lines are	Pull your real mortgage scores and ask a lender where the next threshold sits.

The whole game is knowing your true number and the nearest line above it. Aim at the line, not at some abstract "higher score."

Questions to ask any loan officer

"What tier am I in, and where's the next line above me?"
"If I gained 5 to 10 points, would my rate or PMI actually improve?"
"How much would crossing that line save me over the life of the loan?"
"Is there anything simple I can do before applying to cross it?"

Sitting just below a line? That's a fixable problem.

Grab the free Stuck Homeowner's Playbook — it shows you how to find your nearest tier line and aim for it before you apply.

Get the Free Playbook →

Frequently asked questions

What are the credit-score tiers for a mortgage?

Pricing typically steps at common lines such as 620, 640, 660, 680, 700, 720, 740, and 760. Inside a band, scores often price the same; crossing a line can change your pricing. Exact lines vary by lender and program.

Is 720 a magic number?

720 is one of the more meaningful lines on many pricing grids, but it's not the only one and not universal. 740 and 760 are often stronger lines. Pricing steps at thresholds, so which line matters depends on your specific program.

How many points do I actually need?

Often far fewer than people think. If you're sitting just below a tier line, you may only need 5 to 10 points to cross it. If you're comfortably inside a band, gaining a few points may not change your pricing at all.

Does my score affect PMI too?

Yes. On loans with private mortgage insurance, your credit tier can influence the PMI rate as well as your interest rate. So crossing the right line can lower two costs at once, which is why a small move can be worth so much.

Educational content only — not financial, mortgage, credit-repair, or legal advice, and not a loan offer or solicitation. Timothy George is the founder of Infinity Financial Mortgage Corporation and a former mortgage professional with 20+ years in mortgage and auto finance; he is not a currently-licensed loan originator and does not originate loans or repair credit. Tier lines, rate adjustments, and PMI pricing vary by lender, program, and market, and savings examples are illustrative, not guarantees — confirm specifics with a currently-licensed professional before you act.