San Antonio Texas Mortgage Calculator 2026

San Antonio offers housing costs that fall below the national average. At a median home price of $310K -- about 26% below the U.S. median -- the city presents realistic home-ownership opportunities for a wider range of income levels.

With an income-to-price ratio of 4.9x, San Antonio keeps home ownership within comfortable reach for median-income earners. A household earning $63K can typically handle the monthly payment plus taxes and insurance without being house-poor.

The market in San Antonio has been relatively stable, giving buyers more time to evaluate options and negotiate terms without the urgency of a rapidly shifting price environment.

San Antonio offers the lowest median home prices among Texas's four major metros, making it the state's most accessible market for first-time buyers. Military presence (Joint Base San Antonio encompasses three installations) creates steady housing demand and a robust VA loan market — roughly 25% of home purchases here use VA financing versus 7% nationally. The city's growth is concentrated on the far north side (Stone Oak, Alamo Ranch) where new construction starts at $280K, while established neighborhoods like Alamo Heights and Terrell Hills command $500K-$1M+.

Monthly housing costs extend well beyond principal and interest. For a median-priced home of $310K with 20% down at approximately 6.8%, the principal-and-interest payment comes to around $1,617 per month. Add property taxes of roughly $426/mo (1.65% rate) and homeowners insurance near $129/mo, and the total PITI lands around $2,172 per month.

Using the 28% rule of thumb, a household would need a gross annual income of approximately $93,086 to comfortably carry that payment. These are estimates -- actual numbers depend on credit score, loan type, and lender terms.

Texas levies no state income tax, which boosts take-home pay for residents of San Antonio. However, property taxes average 1.6% statewide, so the overall tax picture depends on whether you rent or own.

For a home priced at $310K, annual property taxes of approximately $5,115 are a significant recurring cost that lenders include in qualifying calculations. Understanding the full tax picture helps set realistic expectations for both monthly cash flow and long-term affordability.

1. Texas Housing Finance Authority (HFA) — offers below-market mortgage rates and down payment assistance for income-qualified buyers.

2. Texas has no state income tax, meaning more of your paycheck is available for housing costs and saving toward a down payment.

3. HUD-approved housing counseling agencies in San Antonio offer free or low-cost guidance on mortgage readiness and local assistance programs.

4. FHA loans are widely used in San Antonio — they require as little as 3.5% down ($11K on the median home) and are available to borrowers with credit scores as low as 580.

With a one-bedroom rental averaging around $1,110/mo and total ownership costs near $2,172/mo for the median home, buying carries a premium of roughly $1,062/mo in year one over renting. However, that gap narrows as equity builds and rent prices rise.

A common rule of thumb: if you plan to stay at least 3-5 years, buying in San Antonio is likely the stronger financial move. Shorter timelines typically favor renting given transaction costs (closing costs, agent commissions) that take time to recoup.

The local price-to-rent ratio — home price divided by annual rent — is approximately 23x. Above 20x often tips toward renting unless you plan a long-term stay.

If you're VA-eligible, San Antonio is one of the best markets in the country to use your benefit — zero down payment on a $310K median home saves you $62,000 in upfront costs versus conventional 20% down. Local lenders like USAA and Randolph-Brooks FCU specialize in VA loans and often beat national lender rates by 0.125-0.25%.

1. Property taxes here run above 1.5%. Ask your lender to include the exact PITI (not just principal and interest) in your approval letter so you see the true monthly cost.

2. Take advantage of the no-income-tax environment — redirect what you'd pay in state tax toward a larger down payment or bi-weekly mortgage payments to save on interest.

3. Compare offers from at least three lenders. A 0.25% difference in rate on $310K saves roughly $18,600 over 30 years.

4. Schedule a home inspection even in competitive markets — skipping it to win a bid can cost far more than the inspection fee if hidden issues emerge after closing.

5. Check your credit report 6 months before applying — disputing errors takes time, and each point above 740 can improve your rate meaningfully.