San Antonio Mortgage Calculator

Hey there, I’m Anthony Sharp with Sharp Realty Group TX. Use this free calculator to see what your monthly mortgage payment might look like. Just enter your numbers below and you’ll get an estimate in seconds. Remember, these are ballpark figures—your lender will give you exact details.
 
Note: Results are estimates. Always double-check with your lender.
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Your mortgage payments over 30 years will add up to $0.

Key Terms to Understand

Before you dive into the numbers, brush up on these homebuying terms:

1

Amortization

How your loan’s paid off over time. Each payment covers part of the principal and part of the interest.

2

Escrow

A neutral account for your taxes and insurance. You pay a bit each month, and escrow handles the bills.

3

Principal

The original amount you borrow—what you actually owe before interest.

4

Interest Rate

The annual percentage your lender charges you on the loan balance.

5

APR (Annual Percentage Rate)

Your true yearly cost—including the interest rate plus certain fees.

6

PMI (Private Mortgage Insurance)

Insurance for your lender if you put down less than 20%. You pay for it until you hit 20% equity.

7

DTI (Debt-to-Income Ratio)

Your monthly debts ÷ your gross monthly income. Lenders use it to see how much you can handle.

8

LTV (Loan-to-Value Ratio)

Your loan amount ÷ the home’s appraised value, shown as a percentage.

9

Closing Costs

Fees due at closing—think title work, inspections, lender fees.

10

Earnest Money

A deposit that shows you’re serious. It goes toward your down payment at closing.

Want to more detail? Check out our Terms You Should Know below.

Terms You Should Know

Q1: What’s an amortization schedule? +

An amortization schedule breaks your monthly payment into principal versus interest over the life of your loan. You’ll see exactly how much of each payment chips away at your balance.

Q2: How does escrow work? +

Escrow holds money for property taxes and insurance. You send a bit each month, and when bills are due, escrow pays them—you never have to worry about missing a deadline.

Q3: What exactly is principal? +

Principal is the original amount you borrow. As you pay it down, you owe less interest, because interest is always calculated on your remaining principal.

Q4: How do interest rate and APR differ? +

The interest rate is what you pay on your loan balance. APR combines that rate with certain lender fees, giving you the true annual cost of borrowing.

Q5: When do I pay PMI? +

If you put down less than 20% of the home’s value, you’ll pay private mortgage insurance (PMI) until you build enough equity.

Q6: What’s my debt-to-income ratio (DTI)? +

DTI compares your monthly debt payments to your gross income. Lenders use it to decide how much mortgage you can handle.

Q7: Why does LTV matter? +

Loan-to-value (LTV) tells you the portion of your home’s value you’re financing. Lower LTV can get you better rates.

Q8: What are closing costs? +

Closing costs are the fees and expenses you pay at closing—appraisals, title searches, lender fees, and more.

Q9: What is earnest money? +

Earnest money is a deposit that shows you’re serious about buying. It’s credited toward your down payment when you close.

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