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San Marcos, Guadalupe County, Texas Property Taxes

  • Median San Marcos, TX effective property tax rate: 1.32%, significantly higher than the national median of 1.02%, but lower than the Texas state median of 1.67%.

  • Median San Marcos, TX home value: $76,854

  • Median annual San Marcos, TX tax bill: $961, $1,439 lower than the national median property tax bill of $2,400.

How are property taxes in Guadalupe County calculated?

Property taxes in San Marcos, TX are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.

Understanding San Marcos’s property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in San Marcos, knowing local tax details benefits homeowners and investors.

Last Updated March 1, 2025

San Marcos, Guadalupe County, Texas Property Tax Bill Calculator

$100,000

$1,500,000

$3,000,000

Median Effective Tax Rate

1.32%

Estimate Property Tax Bill

$1,014

$941

SAVE WITH OWNWELL

$1,102

Average Tax Savings

Ownwell’s San Marcos Property Tax Bill Calculator empowers homeowners, real estate investors, and potential buyers to estimate their annual property taxes in San Marcos with just two data points. By entering your property's estimated assessed value, our calculator applies San Marcos’s median effective tax rate to accurately estimate your property tax bill. Note that your property's assessed value — determined by your county — reflects any exemptions you may have, ensuring a more precise calculation for your property tax obligations. This insightful tool helps you understand potential tax liabilities and highlights how Ownwell can assist in reducing property taxes in Guadalupe County. For those interested in more localized information, please scroll down to explore city-level trends!

Property Tax Rates Across San Marcos, Guadalupe County, Texas

Local government entities set tax rates, and these can vary widely within Texas. Each county, including Guadalupe, estimates its required budget annually to provide essential services. This budget is then divided by the total value of all taxable property within its jurisdiction, resulting in the property tax rate. While votes and laws play a role in setting these rates and budgets, this is essentially the annual process.

In San Marcos, located in the 78666 zip code, the effective property tax rate stands out. When comparing San Marcos to other cities in Texas, it's important to note that property tax rates can differ significantly across the state. The median property tax rate in Texas is higher than the national median rate of 1.02%. San Marcos, with its rate, reflects this trend and is a key example of how tax rates are determined by local needs and property values. Understanding these dynamics can help property owners better navigate their tax obligations and explore potential savings through appeals or exemptions.

Property Tax Rates Across San Marcos, Guadalupe County, Texas

Source: Ownwell

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1.14%

1.50%

1.86%

Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.

Median Effective San Marcos Tax Rate

1.32%

Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.

Median Effective Guadalupe County Tax Rate

1.69%

Median Effective Texas Tax Rate

1.67%

Median Effective United States Tax Rate

1.02%

Property Tax Rates Across San Marcos, Guadalupe County, Texas

Zip10th Percentile25th PercentileMedian Tax Rate75th Percentile90th Percentile
786660.63%1.10%1.32%1.32%1.51%

Source: Ownwell

Property Tax Assessment Values Across San Marcos, Guadalupe County, Texas

When examining property taxes in San Marcos, TX, understanding the distinction between "market value" and "assessed value" is crucial. The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The Guadalupe County Appraisal District estimates the market value for tax purposes. The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill.

In Guadalupe County, assessment notices are sent in the spring each year. They’ll typically reach your mailbox by the middle of March. Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill. By providing insights into how assessed and market values are determined, this section helps property owners navigate their tax responsibilities and understand the valuation processes affecting their property taxes in San Marcos.

For example, the median home price in San Marcos is $76,854, with tax bills ranging significantly across the county. Zip code 78666 has the highest median home price at $76,841.

Property Tax Assessment Values Across San Marcos, Guadalupe County, Texas

Source: Ownwell

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$76,841

$227,077

$377,313

Median San Marcos Market Value

$76,854

Median Guadalupe County Market Value

$288,797

Median Texas Market Value

$247,950

Median United States Market Value

$235,294

Property Tax Assessment Values Across San Marcos, Guadalupe County, Texas

Zip10th Percentile25th PercentileMedian Home Price75th Percentile90th Percentile
78666$11,852$41,753$76,841$188,859$325,406

Source: Ownwell

Property Tax Bills Across San Marcos, Guadalupe County, Texas

In San Marcos, located in Guadalupe County, Texas, property tax bills are determined by the assessed value of a home and the local tax rate. The median home price is $76,854, with property tax bills varying widely. The 25th percentile tax bill is $512, while the 75th percentile is $2,332, and the 90th percentile reaches $4,043. This range indicates that tax bills can significantly impact homeowners, especially those with higher-value properties. The tax rate in this region is a key factor in determining the final bill, with the local government setting rates that fund essential services like schools and infrastructure. Homeowners in San Marcos face a median tax bill of $960, which is below the national median of $2,400, offering some relief compared to other areas. Ownwell assists homeowners in reducing their property tax bills by providing expert appeal and exemption services. By identifying potential savings and ensuring accurate assessments, Ownwell helps homeowners keep their tax bills manageable.

Property Tax Bills Across San Marcos, Guadalupe County, Texas

Source: Ownwell

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$830

$3,528

$6,226

Median San Marcos Tax Bill

$961

Median Guadalupe County Tax Bill

$4,783

Median Texas Tax Bill

$3,971

Median United States Tax Bill

$2,400

Property Tax Bills Across San Marcos, Guadalupe County, Texas

Zip10th Percentile25th PercentileMedian Tax Bill75th Percentile90th Percentile
78666$105$512$960$2,332$4,044

Source: Ownwell

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