Financing tools
See What a Mortgage Rate Actually Does to Your Payment
Compare monthly payments, buying power, and different mortgage-rate scenarios using today's rate as a starting point.
Direct answer:your monthly housing payment is driven by three things you can see and change right now — home price, down payment, and rate. Enter your numbers below to see today’s estimated payment, then use the rate comparisons to see exactly what a higher or meaningfully lower rate would do to it.
What will this home cost me?
Mortgage rate
Loan term
6.66% is the Freddie Mac Primary Mortgage Market Survey (PMMS), via FRED— a national weekly average, updated August 27, 2026. It is a reference starting point, not a personalized loan quote — change it freely. See recent history →
Add taxes, insurance, HOA & mortgage insurance
Estimated Total Monthly Housing Payment
$2,991
Principal & interest ($2,571) is only part of the story — taxes, insurance, HOA, and mortgage insurance make up the rest of your estimated total housing payment above. Estimates only; actual financing terms depend on the borrower, property, loan program, lender, and market conditions.
- Principal & Interest
- $2,571
- Property taxes
- $300
- Homeowners insurance
- $120
- Estimated Total Housing Payment
- $2,991
See how mortgage rates change the payment
Nearby rate scenarios
| Rate | Total payment | Monthly difference |
|---|---|---|
| 6.13% | $2,850 | −$140 |
| 6.38% | $2,915 | −$75 |
| 6.63% | $2,981 | Current |
| 6.88% | $3,048 | +$57 |
| 7.13% | $3,115 | +$124 |
Compare any two mortgage rates
Custom rate comparison
Not limited to small changes — compare today’s rate against any hypothetical rate scenario, including a rate several points lower.
Hypothetical rate scenario — not a forecast or prediction of where mortgage rates are headed.
If the Rate Fell from 6.66% to 5.66%
Estimated payment change
−$259/mo
−$3,108/yr
Same-payment buying power
+$40,609
vs. $500,000 today, keeping the same payment
| Scenario A · Today | Scenario B · Hypothetical | Difference | |
|---|---|---|---|
| Mortgage rate | 6.66% | 5.66% | −1.00 pts |
| Principal & interest | $2,571 | $2,311 | −$259 |
| Total housing payment | $2,991 | $2,731 | −$259 |
| Annual payment | $35,886 | $32,778 | −$3,108 |
| Interest paid — 5 years | $129,356 | $109,307 | −$20,049 |
| Remaining balance — 5 years | $375,126 | $370,619 | −$4,507 |
| Same-payment buying power | $500,000 | $540,609 | +$40,609 |
Time horizon
Buying now vs. a hypothetical future rate: the table above compares two rates on the same original loan amount— it is not a refinance analysis. A real future refinance would involve closing costs, timing, and loan seasoning, and typically starts from a lower remaining balance than today’s original loan amount. A lower future rate does not by itself guarantee that refinancing would make financial sense.
Keep the same payment
How much home could you buy?
Holding your $2,991monthly payment, down payment, term, HOA, and mortgage insurance constant — only the rate changes. A materially different home price is unlikely to carry your exact current taxes and insurance, so those can scale with price below instead of staying fixed.
Property tax assumption
Estimated at 0.72%/year of price — derived from your $300/mo on a $500,000home. Taxes don’t scale perfectly with value; this is an estimate.
Insurance assumption
Estimated at 0.29%/year of price — derived from your $120/mo on a $500,000 home. An estimate, not a quote.
7.63%
$467,079
−$32,921
6.63%
$501,279
Current
5.63%
$540,609
+$40,609
4.63%
$585,925
+$85,925
3.63%
$638,191
+$138,191
Modeling only, not a lender qualification. Want a qualification-oriented view instead? Mortgage Affordability Calculator →
I want to spend $X/month. What could I buy?
Payment → home price
| Rate | Approx. home price |
|---|---|
| 7.63% | $468,278 |
| 6.63% | $502,589 |
| 5.63% | $542,048 |
| 4.63% | $587,512 |
| 3.63% | $639,949 |
Payment-based modeling using your current down payment, term, HOA, and mortgage insurance — taxes and insurance use the same fixed-or-scaled assumption set above, in Buying Power. Not lender underwriting or approval.
What rate gets me to my target payment?
Rate needed for this price
At today’s $500,000 home price and down payment, what single rate would produce your $3,000 target payment above?
Required mortgage rate
6.70%
vs. 6.66% current rate (+0.04 pts)
Payment difference
+$9/mo
$3,000 target vs. $2,991 at the current rate
What happens if I put more down?
Compare down payments
| Down payment | Cash down | Loan amount | P&I | PMI | Total payment |
|---|---|---|---|---|---|
| 5% | $25,000 | $475,000 | $3,052 | $297 | $3,769 |
| 10% | $50,000 | $450,000 | $2,892 | $281 | $3,593 |
| 15% | $75,000 | $425,000 | $2,731 | $266 | $3,417 |
| 20% | $100,000 | $400,000 | $2,571 | — | $2,991 |
10% Down → 20% Down
Additional cash required
$50,000
Estimated monthly-payment reduction
$603
This uses an additional $50,000 of cash to reduce the estimated monthly payment by approximately $603. That extra cash becomes home equity, not a cost — it isn’t spent, and this isn’t a payback-period or return calculation.
Already own a home?
What would replacing your current mortgage actually cost?
Your current home
Don’t know either payment? Use your loan’s original numbers instead — a contractual payment doesn’t change as the balance pays down, so estimating from today’s remaining balance would understate it.
Potential new home
Uses the home price, down payment, rate, term, and ongoing costs entered in the main calculator above.
Enter your current payment (or your loan’s original amount, term, and rate) above to see the comparison.
What this means
Assumptions used
- Taxes, insurance, HOA, and mortgage insurance are entered as fixed dollar (or, for the down-payment comparison, an editable assumed rate) estimates for the area
- The starting rate is the Freddie Mac Primary Mortgage Market Survey (PMMS), via FRED — a published national weekly average, not a personalized quote
- Same-payment buying power and payment-target results hold down payment, term, and non-P&I costs constant while only the rate changes
- Hypothetical lower-rate scenarios are comparisons, not predictions of where mortgage rates are headed
What could change this
- Your actual rate at the time you lock, which depends on credit, program, points, and market conditions
- Real property taxes, insurance, and HOA dues for the specific home
- Whether a future refinance would actually make sense once closing costs and timing are factored in
How mortgage rates change your payment
A small rate change moves more than it looks like it should.
- Principal & interest is calculated with the standard fixed-rate amortization formula — the same math behind every mortgage payment on this site’s other calculators.
- Your estimated total housing payment adds property taxes, homeowners insurance, HOA dues, and mortgage insurance on top of principal & interest — treating P&I alone as your full payment understates what actually leaves your account each month.
- Rate differences are percentage points, not percent changes. A move from 6.25% to 3.25% is a 3.00 percentage-point decrease — a much larger payment swing than a same-sized move near the top or bottom of the rate range might suggest.
- What happens if rates drop 2 or 3 percentage points? The custom comparison above supports any two rates, not just small moves near today’s reference rate — test 6.25% vs. 3.25%, or 7% vs. 4%, directly.
- Buying power moves with rate, not just price. Holding your payment constant, a lower rate supports a meaningfully higher purchase price for the same monthly budget — and a higher rate supports meaningfully less.
Worked example (hypothetical)
A $500,000 home with 20% down ($100,000) financed at 6.25%over 30 years carries a principal & interest payment of roughly $2,463. The exact same home financed instead at 3.25%— a 3.00 percentage-point decrease, not a “3% decrease” — carries a principal & interest payment of roughly $1,741, about $722 less per month (about $8,665/year) on the identical loan amount. Holding that same $2,463 principal-and-interest payment constant, dropping from 6.25% to 3.25% supports meaningfully more purchasing power than the original $500,000 home price.
Displayed rates are reference or hypothetical scenarios, not personalized loan quotes. A hypothetical future rate is not a prediction. Taxes, insurance, HOA, mortgage insurance, lender fees, and eligibility vary by borrower, property, loan program, lender, and market conditions — this tool does not determine loan approval, and a lower future rate does not guarantee that refinancing will make financial sense.
National considerations
Mortgage rates move with broader economic conditions and change weekly — the starting rate above is a real published national average, not a personalized lender quote. See how it compares with recent history →
Utah considerations
Property tax rates and typical HOA structures vary by Utah county — use local figures rather than a national average where possible.
Author: Todd McClean, Realtor® | Real Estate Investment Strategist, Mountainland Realty, Inc.. Reviewed August 22, 2026. This tool provides general real estate information and is not legal, tax, accounting, lending, securities, commodities, or financial-planning advice.
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Questions
Frequently asked questions
Why is the total housing payment higher than the principal-and-interest number I've seen elsewhere?
Is the starting mortgage rate a personalized quote?
Are the lower-rate scenarios a prediction that rates will fall?
Does comparing today's rate to a hypothetical future rate model a refinance?
How is PMI or mortgage insurance calculated?
Does this replace the Mortgage Affordability Calculator?
Next step
Want to compare these numbers against actual homes in your price range?
A strategy review can help translate this into a real search — or, if you’re weighing giving up a lower current rate to move, help you think through that tradeoff directly.