Calculators
Run the numbers yourself.
Seven calculators for the questions that come up most — payment, affordability, refinancing, points, interest-only, and rentals. Set any rate you like and watch the figures move; your actual rate and terms depend on your profile, property, and program.
7 calculators — swipe the tabs →
What a loan costs each month, before taxes and insurance.
Set by you, for modeling — not an advertised rate or offer.
- Loan amount$1,200,000
- Down payment$300,000
- Rate · term6.250% · 30 yr
- Est. monthly payment
principal & interest$7,389 - Excludes property taxes, insurance, HOA dues, and mortgage insurance — the Affordability and Income tabs include them.
Roughly what price your income supports — with property taxes, insurance, and HOA counted.
Car loans, student loans, minimum card payments — not rent.
Set by you, for modeling — not an advertised rate or offer.
Taxes, insurance & HOA1.20% · $2,400/yr · $0/mo
Santa Clara County bills usually land a bit over 1% of purchase price.
- Monthly housing budget$7,958
- Taxes, insurance, HOA & MI$1,509
- Left for principal & interest$6,449
- Supportable loan amount$1,047,385
- Est. purchase price$1,309,231
- Assumes roughly 43% debt-to-income for housing and debts combined, and mortgage insurance of about 0.5% of the loan per year when the down payment is under 20%. Programs vary — some allow more, some less.
Have a price in mind? See roughly what household income it takes to qualify.
Set by you, for modeling — not an advertised rate or offer.
Taxes, insurance & HOA1.20% · $2,400/yr · $0/mo
- Principal & interest$7,389
- Taxes, insurance, HOA & MI$1,700
- Total housing payment$9,089
- Monthly income needed$23,463
- Est. annual income
to qualify$281,553 - Gross income, before taxes. Assumes roughly 43% debt-to-income; RSU, bonus, and self-employed income are counted differently by different lenders.
How long a refinance takes to pay for itself — and what it does to the total interest you pay.
Set by you, for modeling — not an advertised rate or offer.
- Current principal & interest$5,457
- New principal & interest$4,926
- Monthly difference$531 less
- Break-even on
closing costs16 months - Interest left to pay — current loan:$1,033,000
- Interest on the new loan:$973,000
- Restarting the clock can lower the payment while raising lifetime interest — compare the two lines above, not just the payment. Assumes closing costs are paid at closing, not added to the loan.
Paying points buys a lower rate up front. This shows how long it takes to earn that money back.
Set by you, for modeling — not an advertised rate or offer.
One point = 1% of the loan amount.
Varies by lender and by day — use what your quote shows.
- Cost of points$10,000
- Rate after points6.250%
- Payment without points$6,321
- Payment with points$6,157
- Monthly savings$164
- Break-even61 months
- If you expect to keep the loan longer than this — no sale, no refinance — the points pay for themselves. If not, they likely don’t.
A lower payment now, a higher one later. See both before choosing it.
Set by you, for modeling — not an advertised rate or offer.
On a 30-year loan; the balance then repays over the years remaining.
- Interest-only payment
years 1–10$8,125 - Payment after year 10$11,184
- Increase at that point+$3,059
- Standard 30-year payment$9,481
- Principal repaid during
interest-only years$0 - Rate held constant for illustration. Most interest-only loans are adjustable, so the later payment could be higher or lower. Interest-only programs are available on select loans for qualified borrowers.
DSCR loans qualify a rental on its own rent rather than your tax returns. This is the ratio lenders look at.
Lease amount, or market rent from the appraisal.
Set by you, for modeling — not an advertised rate or offer.
Taxes, insurance & HOA1.20% · $1,800/yr · $0/mo
- Principal & interest$3,959
- Taxes, insurance & HOA$1,000
- Total payment (PITIA)$4,959
- Debt service
coverage ratio1.01 - Rent covers the payment. Many DSCR programs look for 1.00 or higher.
- DSCR = monthly rent ÷ total monthly payment. 30-year term assumed; minimums, reserves, and down payment requirements vary by program.
For illustration and education only. Figures are estimates and do not constitute a quote, rate lock, offer, or commitment to lend. Interest rates are set by you for modeling purposes and are not advertised rates; taxes, insurance, HOA, mortgage insurance, and rate-per-point figures are rough, adjustable assumptions. Actual rates, payments, and qualifying amounts depend on your credit profile, property, and program, and not all applicants will qualify. NMLS #633059.
Next step
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Tell me where you are: a house you’ve seen, a decline letter from a bank, or just a question. I’ll tell you plainly what’s possible and what it would take.
- Phone(408) 800-6591
- Emailmehdi@mehdikousha.com
- ServingSan Jose · Morgan Hill · Gilroy
& the greater Bay Area
Conversations available in English and Farsi. گفتوگو به زبان فارسی.