Mortgage Rates: The Published Grid That Decides Your Number
The rate on the news is not the rate you get. A base rate is adjusted by a public matrix of credit score and loan-to-value combinations, and knowing where you sit on it is worth more than shopping.
- Published
- Read
- 9 min
- $23,760
- Cost of 0.25% on a $400,000 loan
- 1.75
- Points a mid-score borrower can be charged
- 20 pts
- Credit-score gap that changes a pricing tier
§On this page(6)
The rate quoted in the news is a survey average for a borrower with an excellent score, a large down payment and a conventional loan on a single-family home they intend to live in. Everyone else pays that rate plus adjustments, and the adjustments are not a mystery. For conventional loans they are published in a grid, revised periodically, and available to anyone who looks.
That grid is the reason two people can walk into the same lender on the same morning and leave with rates 0.75% apart. It is also the reason the single highest-return hour before you apply is spent on your credit file and your down payment, not on comparison sites.
What a quarter of a point actually costs
| Rate | Monthly payment | Total interest over 30 years | Extra versus best row |
|---|---|---|---|
| 6.25% | $2,463 | $486,680 | — |
| 6.50% | $2,528 | $510,080 | +$23,400 |
| 6.75% | $2,594 | $533,840 | +$47,160 |
| 7.00% | $2,662 | $558,320 | +$71,640 |
| 7.25% | $2,729 | $582,440 | +$95,760 |
Payments are principal and interest only. Taxes, insurance and any mortgage insurance sit on top. Note the shape: each quarter point costs roughly $66 to $68 a month and just under $24,000 over the full term. A one-point rate spread on this loan is nearly $96,000.
The adjustment grid, and where you sit on it
For conventional conforming loans, price adjustments are set by the investor buying the loan rather than by the loan officer. They are quoted in points, one point being 1% of the loan amount, and are usually converted into a slightly higher rate rather than a cash charge.
| Credit score | ≤ 60% LTV | 70–75% LTV | 80–85% LTV | > 95% LTV |
|---|---|---|---|---|
| 760+ | 0.000 | 0.250 | 0.375 | 0.375 |
| 740–759 | 0.000 | 0.375 | 0.625 | 0.625 |
| 720–739 | 0.000 | 0.625 | 0.875 | 0.875 |
| 700–719 | 0.000 | 0.875 | 1.250 | 1.125 |
| 680–699 | 0.125 | 1.125 | 1.750 | 1.500 |
| 660–679 | 0.250 | 1.500 | 2.250 | 1.750 |
| < 640 | 0.500 | 2.250 | 3.000 | 2.750 |
The live matrix is published by the loan investors and revised periodically, so ask your lender for the current version rather than relying on any printed table, including this one. What is stable is the shape: charges rise as scores fall and as loan-to-value rises, they are stepped rather than continuous, and the worst cell can be well over two points.
The other adjustments nobody warns you about
| Factor | Typical effect on rate | Can you change it? |
|---|---|---|
| Second home | +0.75% to +1.60% | Only by changing the purchase |
| Investment property | +1.50% to +3.00% | No |
| Cash-out refinance | +0.375% to +1.25% | Take less cash, or use a second lien |
| Condominium above 75% LTV | +0.75% | Put more down |
| Two-to-four unit property | +1.00% or more | No |
| Manufactured home | +0.50% | No |
| Adjustable-rate loan | Often lower initially, then resets | Yes. Choose the fixed |
| 15-year term | Typically 0.50% to 0.75% lower | Yes, if the payment fits |
| Loan above the conforming limit | Priced separately as a jumbo | Buy under the limit, or put more down |
| Lender fees and points | Shows in APR, not the rate | Yes. This is what shopping fixes |
The bottom row is the one worth internalising. Most of this grid is a description of the transaction and cannot be negotiated. Fees and points can be, which is precisely why lenders compete on the rate you see and recover it in the numbers you do not.
Rate versus APR, and how to compare offers honestly
The rate determines your payment. The APR folds origination fees, discount points and certain closing costs into a single annualised figure, which makes it a better comparison tool, but not a perfect one, because it assumes you keep the loan the full term.
How to compare four mortgage offers in twenty minutes
Get all quotes on the same day, on a Loan Estimate
Rates move daily, so quotes from different days are not comparable. The Loan Estimate is a standardised three-page form, request it from every lender rather than accepting a rate sheet or a screenshot, because the form forces disclosure of the numbers a verbal quote omits.
Line up page two, section A, side by side
Origination charges, discount points and application fees all sit there. This is where a rate that looked half a point better turns out to have $6,800 of charges behind it. Sections B and C are third-party services and vary far less.
Normalise to zero points
Ask each lender for their rate at exactly zero discount points and zero lender credits. Only then are you comparing the lenders rather than comparing how much of your own money each one has folded into the rate.
Compute total cost at your realistic holding period
Not thirty years. Take the number of years you honestly expect to keep this loan, five, seven, ten, and add the payments plus the up-front costs for each offer. On a five-year horizon, the offer with the lowest APR frequently loses to the one with the lowest fees.
Ask the best lender to beat the second best, in writing
Mortgage pricing has real discretion in it, and a competing Loan Estimate is the only lever that consistently moves it. This is normal practice and costs one email.
The six things you can still change
- Credit score, and specifically reaching the next tier. Paying a revolving balance below 30% utilisation can move a score materially within one statement cycle.
- Down payment crossing a loan-to-value break, especially the 80% line, which removes both a pricing adjustment and mortgage insurance.
- Loan term: a fifteen-year fixed typically prices 0.50% to 0.75% below a thirty-year, if the payment fits.
- Points and lender credits, chosen deliberately against how long you will hold the loan.
- Which lender you use, once every quote is normalised to zero points on the same day.
- Debt-to-income ratio. Paying off one small instalment loan before applying can move you under a threshold.
- Occupancy and property type are what they are; second homes and investment properties carry large permanent adjustments.
- The base rate itself is set by bond markets and is not negotiable by anyone in the transaction.
- Opening new credit or making a large purchase between application and closing can re-price or sink the loan. Lenders re-pull credit before funding.
- Self-employment and variable income do not change your rate directly but lengthen underwriting and can force a lock extension.
- A low appraisal raises your loan-to-value after the fact, which can trigger a worse pricing tier at the worst possible moment.
VerdictFind out which pricing cell you are in before you shop. Ask your lender what score and what loan-to-value would move you to the next better tier, act on whichever is cheaper to reach, then normalise every offer to zero points on a single day and compare total cost over the years you will actually hold the loan.
Free calculator
Run the payment and total interest at each rate you have been quoted
Before you lock a mortgage rate
- Credit scores pulled from all three bureaus, and the next tier break identified
- Loan-to-value calculated, and the cost of reaching the next break priced
- Loan Estimates collected from at least three lenders on the same day
- Every quote re-quoted at exactly zero points and zero credits
- Section A of each Loan Estimate compared line by line
- Total cost computed over your realistic holding period, not thirty years
- Lock period long enough for the actual closing date, with the expiry in writing
- Float-down availability and cost asked about explicitly
- No new credit accounts, no large purchases, no job changes until funding
- $66
- Monthly cost of 0.25%
- $95,760
- Cost of a full point over 30 years
- 0.25%
- Rate equivalent of one point of adjustment
- 80%
- The loan-to-value line worth crossing
$400,000, 30-year
6.25% vs 7.25%
Approximate
Removes MI and a tier
Nobody quotes you a rate. They quote your file, your score band, your loan-to-value band, your occupancy, your property type, and then attach a number to it.
Frequently asked questions
- Why is my mortgage rate higher than the rate in the news?
- Because published averages describe a borrower with a high credit score, a large down payment and a conventional loan on a primary residence. Everyone else pays that base rate plus loan-level price adjustments determined by credit score and loan-to-value, plus further adjustments for occupancy, property type and loan purpose. Those adjustments are published grids, not lender discretion.
- How much does credit score affect a mortgage rate?
- Substantially, and in steps rather than smoothly. Bands break around 640, 660, 680, 700, 720, 740 and 760. Crossing one band on a $340,000 loan can be worth well over a point of price adjustment, which converts to roughly 0.25% of rate per point. Often $100 or more a month. Crossing from 772 to 790, by contrast, is usually worth nothing at all.
- Should I compare mortgages on rate or APR?
- Neither alone. APR is better than rate because it includes lender fees and points, but it assumes you hold the loan for the full term, which most people do not. The reliable method is to get every lender's rate at exactly zero points, then add up payments plus up-front costs over the number of years you actually expect to keep the loan.
- How long should I lock my rate for?
- Long enough to cover the real closing date with margin, and get the expiry in writing. Longer locks cost more, but an expired lock re-prices at whatever the market is that day, which is a far larger risk than the extension fee. Ask separately whether a float-down is available and what it costs, most lenders will not mention it.
- Does a 15-year mortgage really have a lower rate?
- Yes, typically 0.50% to 0.75% below a comparable thirty-year, because the lender's exposure is shorter. The payment is considerably higher, so it only works if the budget genuinely supports it. A middle path is a thirty-year loan with voluntary extra principal payments, you keep the lower required payment and the flexibility, at the cost of the lower rate.
- Can I negotiate a mortgage rate?
- The base rate is set by bond markets, but lender fees, origination charges and points all have real discretion in them, and pricing exceptions exist. The lever that works is a competing Loan Estimate: send the best offer to your preferred lender and ask them to beat it. That costs one email and moves the number more often than people expect.
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