Question 1

How is a monthly mortgage payment calculated?

Accepted Answer

Monthly mortgage payments are calculated using the amortization formula: M = P[r(1+r)^n] / [(1+r)^n - 1], where P is the principal, r is the monthly interest rate, and n is the total number of payments. Early payments are mostly interest, while later payments are mostly principal. This structure ensures each monthly payment is the same fixed amount over the entire loan term.

Question 2

What is a good down payment percentage?

Accepted Answer

A 20% down payment is traditionally recommended as it avoids private mortgage insurance (PMI), which typically costs 0.5-1% of the loan amount annually. However, many lenders accept 3-5% down for conventional loans, 3.5% for FHA loans, and even 0% for VA and USDA loans. A larger down payment means lower monthly payments, less total interest, and better loan terms.

Question 3

Should I choose a 15-year or 30-year mortgage?

Accepted Answer

A 30-year mortgage has lower monthly payments but costs significantly more in total interest over the life of the loan. A 15-year mortgage has higher monthly payments but saves tens of thousands of dollars in interest and typically offers a rate 0.5-0.75% lower. For example, on a $300,000 loan at 7%, a 30-year mortgage costs about $418,527 in total interest versus $185,714 for a 15-year term.

Question 4

What is PMI and how can I avoid it?

Accepted Answer

Private Mortgage Insurance (PMI) is required by lenders when your down payment is less than 20% of the home price. PMI typically costs between 0.5% and 1% of the original loan amount per year, added to your monthly payment. You can avoid PMI by making a 20% down payment, using a VA loan (no PMI required), or requesting PMI removal once your loan-to-value ratio reaches 80%.

Question 5

What are closing costs and how much should I expect?

Accepted Answer

Closing costs are fees paid when finalizing a mortgage, typically ranging from 2% to 5% of the home purchase price. They include appraisal fees, title insurance, attorney fees, origination fees, and prepaid items like property taxes and homeowners insurance. On a $400,000 home, expect to pay $8,000 to $20,000 in closing costs. Some lenders offer no-closing-cost mortgages, but the costs are usually rolled into a higher interest rate.

Question 6

What is the current average mortgage rate in the US?

Accepted Answer

As of early 2025, average 30-year fixed mortgage rates hover around 6.5-7.0%, while 15-year fixed rates are typically 5.8-6.5%. Rates vary based on your credit score, down payment, loan type, and lender. A credit score of 740 or higher generally qualifies you for the best available rates. Even a 0.5% rate difference can save or cost tens of thousands of dollars over the life of a 30-year loan.

Question 7

Should I pay extra toward my mortgage principal?

Accepted Answer

Making extra principal payments can dramatically reduce your total interest and shorten the loan term. For example, adding just $200 per month to a $300,000 loan at 7% (30-year) can save over $120,000 in interest and pay off the mortgage about 8 years early. However, ensure you have an adequate emergency fund and no higher-interest debt before making extra mortgage payments. Check that your loan has no prepayment penalties.

Mortgage Calculator

Understanding Mortgage Payments

Amortization Formula

Typical US Mortgage Statistics

Additional Costs Beyond P&I

Tips for Getting a Better Mortgage Rate

Important Considerations

Frequently Asked Questions

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