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Mortgage planning tools

Plan your mortgage with confidence

Estimate payments, understand affordability, compare refinancing options, and explore your loan payoff — with every assumption on screen and nothing presented as a quote.

A single-storey Florida home with a covered porch, palm trees and a lawn in bright daylight.

Standard mortgage calculator

Work out the monthly payment and the full cost of the loan.

20.0% of the purchase price

Your own figure. We do not quote rates here.

Estimated monthly payment $3,075. Loan amount $360,000. Total interest over the term $459,160.

Your estimated monthly payment

$3,075/ month

  • Loan amount

    $360,000

  • Total interest

    $459,160

  • Total cost

    $819,160

Payment composition

Payment composition. Total $3,075 a month: Principal $325, 11%; Interest $1,950, 63%; Taxes $450, 15%; Insurance $350, 11%.

The principal and interest split shown is your first payment. Interest falls and principal rises every month after it.

Remaining balance over time

Remaining balance falling from $360,000 at the start to $0 after 30 years.

Assumes every payment is made on schedule and nothing extra is paid.

Scenario comparison

Compare two versions of the same loan.

15-year compared with 30-year
Measure15-year30-yearDifference
Monthly payment$3,136$2,275−$861
Total interest$204,478$459,160+$254,683
Total cost$564,478$819,160+$254,683
Paid off in15 years30 years—

The same loan amount and rate over two terms. A shorter term costs more each month and far less overall.

Mortgage stress test

Hypothetical only — see what one change would do.

As entered

$3,075/mo

$36,905 a year

Rate +1 point

$3,317/mo

+$242/mo (+7.9%)

+$2,901 a year

Taxes +10%

$3,120/mo

+$45/mo (+1.5%)

+$540 a year

Insurance +25%

$3,163/mo

+$88/mo (+2.8%)

+$1,050 a year

Dues +$100

$3,175/mo

+$100/mo (+3.3%)

+$1,200 a year

Each tile moves one assumption and leaves the rest alone. None of these is a prediction that rates, assessments, premiums or dues will change, and none of them is a quote.

Helpful resources

Plain explanations of what these numbers mean.

An estimate, not an offer

Every figure on this page is arithmetic on numbers you entered. It is not a quote, a rate lock, a pre-approval, a loan offer, or a statement that you qualify for anything. Real terms depend on a full application, your credit and documentation, the property, and pricing on the day a rate is locked. Property taxes, insurance and association dues are your assumptions, not amounts quoted by anyone.

Last updated

Reading the output

What a mortgage calculator can and cannot tell you

A calculator does arithmetic on numbers you supply. That is genuinely useful for comparing scenarios against each other: what a larger down payment does to the payment, how much a shorter term costs per month, whether association dues change the picture on a particular property.

What it cannot do is tell you whether a lender will make the loan, at what price, or on what terms. Those depend on your credit profile, your documentation, the property, the occupancy, the program, and the day you lock. Any site that produces a payment figure and calls it a quote is showing you arithmetic dressed up as an offer.

In Florida there is a second trap. Property insurance and association dues are often the fastest-moving part of a housing payment, and a calculator that folds them into one number hides how much of your payment is actually outside the lender’s control. Both tools here keep them separate for that reason.

Before you rely on a figure

Get these three numbers right

  • Property taxes. Use the county property appraiser’s figure for the property, not the seller’s current bill — assessments commonly change when a property sells.
  • Insurance. Get a real quote early. Florida premiums vary enough by property, age, roof and location that an estimate is often badly wrong, and it affects both the payment and whether a DSCR file works.
  • Association dues. Ask for the current figure and any planned assessment. These count toward qualifying and toward debt service.

Questions about these tools

Do these calculators show your rates?
No. The interest rate is a field you fill in yourself so you can model different scenarios. No rate on this site is a quote, because pricing depends on details a web page does not know about your file.
Why is the payment here higher than other calculators show?
Because most calculators show principal and interest only. This one itemises property taxes, insurance, association dues and mortgage insurance separately and adds them in, which is closer to what you will actually pay each month in Florida.
Can I use the output as proof of affordability?
No. It is an estimate based on figures you entered, not an approval, a pre-approval or a commitment to lend. A seller or agent will want a pre-approval from a lender, which is a different thing entirely.

Where to check the underlying numbers

Program rules are set by these organizations and are updated periodically. Where this page and an official source disagree, the official source is correct.