What is mud tax?

MUD tax is a local property tax levied by a Municipal Utility District (MUD), most commonly in Texas, to fund infrastructure and ongoing services for a specific development area.

1) What a Municipal Utility District (MUD) is

A Municipal Utility District is a special-purpose governmental entity created under state law to finance and operate infrastructure in areas that are outside city limits or not yet served by a city.

Typical MUD responsibilities include:

• Water and sewer systems
• Drainage and flood control
• Road and utility infrastructure
• Ongoing maintenance and operations

2) How MUD tax works

• Assessed as a property tax on real estate located within the MUD’s boundaries
• Calculated as a rate per $100 of assessed property value
• In addition to county, city, school district, and other special district taxes

MUD taxes are often higher in newer developments because they repay bonds issued to build infrastructure.

3) What MUD tax pays for

MUD tax revenue is commonly used to:

• Repay bond debt for initial construction
• Pay interest on outstanding bonds
• Cover operations and maintenance costs

Over time, as bonds are paid down, MUD tax rates may decrease, but they do not automatically disappear.

4) Where you’ll see MUD tax on your bill

On a property tax statement, MUD tax appears as a separate line item, often labeled:

• “MUD”
• “Municipal Utility District”
• “Water District”

5) Is MUD tax deductible on your federal return?

Yes, MUD tax is generally deductible as a state and local property tax if you itemize deductions, subject to the $10,000 SALT cap ($5,000 if married filing separately).

If you take the standard deduction, there is no federal tax benefit.

6) How to find your MUD tax rate

You can confirm whether a property is in a MUD and view rates by checking:

• County appraisal district records
• Closing disclosures (for new homes)
• Texas Comptroller’s local tax rate databases

2026 Updates:

The New Cap: For the 2025 and 2026 tax years, the SALT cap has been increased to $40,000 ($20,000 if married filing separately) for most taxpayers.

• The Caveat: This higher limit begins to phase out if your Modified Adjusted Gross Income (MAGI) exceeds $505,000 (for 2026).
• The "Service Charge" Rule: You cannot deduct the portion of your MUD payments that are service charges(the monthly water/sewer bill). Only the ad valorem property tax portion (the annual tax bill) is deductible.

Summary

• MUD tax is a property tax charged by a Municipal Utility District
• Most common in Texas, especially in new developments
• Funds water, sewer, drainage, and infrastructure bonds
• Appears as a separate line on property tax bills
• Deductible federally if you itemize (SALT cap applies)

Source:

• Texas Tax Code §26 
• Texas Water Code §54.601–§54.608
• Texas Comptroller
• IRC §164(a) & §164(b)(6)
• IRS Schedule A Instructions (Form 1040)