Skip to main content
Utilnivo

15-Year Mortgage Calculator

Advanced

Free 15 year mortgage calculator for monthly payment and total interest on a 15-year fixed loan.

  • 100% Free
  • No signup
  • Private & secure
  • Instant results
  • On your device

What is the monthly payment on a $500,000 home with 10% down?

With $50,000 down you finance $450,000. At 7% APR over 30 years, principal and interest is about $2,994 per month. Adding $500 per month property tax, $200 per month insurance, and $150 HOA brings the estimated housing payment to about $3,844 per month before PMI. Below 20% down, lenders often add PMI until equity reaches roughly 80% loan-to-value.

Private on your device

Your information stays on your device and is not uploaded.

Related tools

This 15 year mortgage calculator estimates principal-and-interest payment, total interest, and loan cost on a 15-year fixed-rate home loan. Enter home price, down payment, and rate with a 15-year term (default on this page) to compare against a 30-year schedule. For a side-by-side product comparison, see 15-Year vs 30-Year Mortgage; for biweekly payoff modeling, use the Biweekly Mortgage Calculator.

A 15 year mortgage calculator answers one question first: can you afford the higher monthly payment in exchange for much less total interest and faster equity?

Fifteen-year fixed mortgages often price a bit below 30-year rates and put more of each payment toward principal earlier in the schedule.

The payment is typically 35–50% higher than a 30-year note on the same loan amount. Many buyers keep a 30-year loan and make extra payments instead—run both scenarios before you commit.

This page defaults to a 15-year term. Use the base Mortgage Calculator when you want a general payment estimate, or the 15-Year vs 30-Year Mortgage comparison when you need pros/cons without running numbers.

How to use this tool

1. Enter home price, down payment, and APR. 2. Confirm the term is 15 years (default on this page). 3. Optionally add property tax, insurance, and HOA. 4. Calculate. 5. Use scenario compare to contrast the same purchase on a 30-year term.

Worked example

Example: a $400,000 home with $80,000 down ($320,000 loan) at 6.5% for 15 years is about $2,788/month P&I (~$182,000 total interest). The same loan at 30 years is about $2,023/month but roughly $408,000 total interest.

When to use this

  • Running a 15 year mortgage calculator estimate before talking to a lender.
  • Comparing lender quotes for 15-year vs 30-year fixed rates.
  • Checking whether your income supports a shorter amortization.
  • Estimating interest savings before refinancing to a 15-year term.

Common examples

  • Buying a $350,000 home with 20% down ($70,000), 6.5% APR, 30 years, $4,200/year tax and $1,800/year insurance → principal and interest near $1,770/month; total housing payment near $2,270/month before PMI.
  • Buying a $500,000 home with 10% down ($50,000), 7% APR, 30 years, $6,000/year tax, $2,400/year insurance, and $150/month HOA → P&I near $2,994/month; estimated total near $3,844/month.
  • First-time buyer: $275,000 home with 5% down ($13,750), 6.75% APR, 30 years, modest tax and insurance → P&I near $1,694/month; total near $2,094/month—PMI often applies below 20% down.
  • $425,000 home with 15% down, 6.75% APR, 30 years → P&I near $2,350/month before tax and insurance.
  • Refinance scenario: $280,000 remaining balance at 5.9% for 25 years → compare to current 6.5% payment on the same balance.

Common mistakes

  • Choosing 15 years without leaving room for maintenance and savings.
  • Assuming 15-year rates are always dramatically lower than 30-year.
  • Using the generic Mortgage Calculator page when you specifically need a 15-year default and examples.
  • Forgetting tax and insurance when judging affordability.

How it works

Enter the home price, down payment ($ or % of home price), interest rate, and term. The calculator derives the loan amount and uses the standard amortizing loan formula for principal and interest. Optional annual property tax ($/yr or % of home), home insurance, monthly HOA, and PMI (when LTV is above 80%) are added to estimate a total monthly payment.

Limitations

Monthly payment estimates exclude HOA, PMI changes, escrow adjustments, and property tax reassessments. Not a loan offer or pre-approval.

Privacy and file handling

Your data stays on your device and is not uploaded.

Accuracy & methodology

This section documents how the calculator works, what it leaves out, and when results were last reviewed. Figures are educational estimates—not professional advice—and are not labeled "current" unless tied to automatically updated reference data.

Formula source or methodology
Loan amount = home price − down payment. Monthly principal & interest uses the standard amortizing loan payment formula (same as loan calculator). Optional annual property tax, insurance, and HOA are divided by 12 and added to P&I for total monthly housing payment.
Jurisdiction
General mortgage math (not country-specific underwriting rules)
Unit system
Currency for price, down payment, tax, insurance, HOA; years for term; percent for rate
Rounding method
Currency amounts round to two decimal places (half up via Math.round × 100 / 100).
Assumptions
  • Fixed annual interest rate for the full term
  • Level monthly payments (fully amortizing)
  • Down payment is a dollar amount, not a separate percent field
Known omissions
  • Not tax, legal, investment, or lending advice. Confirm material decisions with qualified professionals.
  • Origination fees, points, PMI/MIP, and lender-specific charges unless a field exists
  • Property taxes, insurance, and HOA unless explicitly entered
  • Prepayment penalties and variable or adjustable rates after the initial period
  • Tax deductibility of interest
Test cases (automated)
  • Typical home price, down payment, rate, and term return positive P&I and total interest
  • Down payment greater than home price is rejected
Version & last verified

Logic version 1.0. Content and formulas last verified .

Important notice

Results are estimates for educational purposes and are not financial advice. Taxes, insurance, HOA fees, and lender-specific costs may not be included. Consult a qualified financial professional for personal guidance.

Related Mortgage Calculator pages

These pages use the same mortgage calculator with examples tailored to different tasks.

Related comparisons

Learn how formats and terms differ before you convert or calculate.

FAQ

Frequently asked questions

What is a 15 year mortgage calculator used for?

It estimates monthly principal and interest (and optional tax/insurance) on a 15-year fixed loan so you can see payment size and total interest before you lock a rate.

How much more is a 15-year payment vs 30 years?

On the same loan amount and rate, a 15-year payment is typically 35–50% higher than a 30-year payment because the principal is repaid in half the time—while total interest falls sharply.

Do 15-year mortgages have lower interest rates?

Often yes—lenders price shorter terms with slightly lower rates because the loan is repaid faster. Enter the rate quoted on your 15-year offer for an accurate estimate.

Is this different from the main Mortgage Calculator?

Same engine, but this landing page defaults to 15 years and focuses copy/examples on 15-year payment and interest savings. The main Mortgage Calculator defaults to 30 years for general estimates.

Can I switch from 30 years to 15 years later?

You can refinance to a 15-year loan or make extra payments on a 30-year note. Compare total cost including closing costs before refinancing.

Related pages

Page last reviewed: