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Mortgage Calculator

Calculate home loan payments with taxes and insurance

FAQs

Do property taxes and insurance change monthly?

They are annual estimates split into monthly amounts here for budgeting purposes.

When is PMI applied?

PMI typically applies if down payment is under 20% and can be removed once equity is sufficient.

How to Use the Mortgage Calculator

Calculate your complete monthly mortgage payment including principal, interest, property taxes, insurance, HOA fees, and PMI. Perfect for first-time homebuyers and refinancing decisions.

  1. Enter the home purchase price.
  2. Enter your down payment amount.
  3. Enter the annual interest rate.
  4. Enter the loan term in years (typically 15 or 30 years).
  5. Add annual property tax and insurance costs.
  6. Include monthly HOA fees if applicable.
  7. Enter PMI (Private Mortgage Insurance) rate if your down payment is less than 20%.
  8. Review your total monthly payment breakdown.

Mortgage Calculation Formulas

Mortgage payments combine principal, interest, and escrow items (taxes, insurance) into one monthly payment.

Principal & Interest (P&I)

M = P × [r(1+r)ⁿ] / [(1+r)ⁿ - 1]

Same as loan payment formula where P is loan amount (price - down payment), r is monthly rate, n is number of payments.

Example:

Input: $400,000 loan at 6.5% for 30 years

Calculation: M = 400,000 × [0.00542(1.00542)³⁶⁰] / [(1.00542)³⁶⁰ - 1]

Result: $2,528.27 P&I

Monthly Property Tax

Monthly Tax = Annual Tax / 12

Divide annual property tax by 12 for monthly amount.

Example:

Input: $4,000 annual tax

Calculation: $4,000 / 12

Result: $333.33/month

Monthly PMI

Monthly PMI = (Loan Amount × PMI Rate) / 12

PMI is typically 0.5% to 1% annually of the loan amount, paid monthly.

Example:

Input: $400,000 loan at 0.5% PMI

Calculation: ($400,000 × 0.005) / 12

Result: $166.67/month

Total Monthly Payment

Total = P&I + Property Tax + Insurance + HOA + PMI

Sum of all monthly housing costs.

Example:

Input: P&I $2,528.27 + Tax $333.33 + Insurance $125 + HOA $0 + PMI $166.67

Calculation: Total monthly payment

Result: $3,153.27

Real-World Use Cases

Mortgage calculators help you understand home buying affordability and compare different loan scenarios.

First-Time Homebuying

Determine how much home you can afford and what your monthly payment will be.

Example: Calculate payment for $500,000 home with $100,000 down payment at 6.5% for 30 years

Refinancing Decisions

Compare current mortgage payments vs. refinanced loan terms to see if refinancing saves money.

Example: Compare 30-year at 7% vs. refinancing to 6% to calculate monthly savings

Down Payment Planning

Understand how different down payment amounts affect monthly payments and PMI requirements.

Example: Calculate difference between 10% down ($50,000) vs. 20% down ($100,000) on $500,000 home

Budget Planning

Factor all housing costs into your monthly budget before house hunting.

Example: Calculate total monthly cost including all escrow items to ensure affordability

Loan Term Comparison

Compare 15-year vs. 30-year mortgages to see trade-offs between payment amount and total interest.

Example: Compare $2,528/month for 30 years vs. $3,484/month for 15 years on same loan amount

Tips & Best Practices

Tips

  • Keep total monthly payment (including all costs) below 28% of gross monthly income for financial stability.
  • Consider making extra payments toward principal to pay off mortgage faster and save on interest.
  • PMI typically disappears once you reach 20% equity - track your loan-to-value ratio.
  • Property taxes and insurance costs vary by location - research local averages before calculating.
  • Shop around for the best interest rates - even 0.25% difference can save tens of thousands over loan term.
  • Consider shorter loan terms (15 years) if you can afford higher payments - saves significant interest.

Common Mistakes to Avoid

  • Only considering principal and interest, ignoring property taxes, insurance, and other costs.
  • Buying at maximum approval amount without considering other expenses and savings goals.
  • Not accounting for PMI when putting down less than 20%.
  • Choosing 30-year mortgage without comparing to 15-year option and total interest difference.
  • Failing to factor in closing costs, which can add 2-5% to home purchase price.

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