78729 Property Tax Rate

Property owners in ZIP code 78729 (Austin, Texas) pay a median of $7,041/year in property taxes on homes valued at $434,500. This translates to an effective tax rate of 1.62%, which is 20% above the Texas state average of 1.35%.

The monthly property tax burden for a median-valued home in 78729 is approximately $587, which factors into escrow payments on mortgages. This ZIP code is located within Williamson County. This is $3,910 more than the Texas average of $3,131/year.

Compared to similar ZIP codes in Texas, 78729 has lower property taxes. ZIP codes with similar effective rates include 77004 (1.62%) and 77382 (1.62%).

In Austin, property taxes represent approximately 8.6% of the median household income of $81,589, providing context for the relative tax burden on homeowners in this area.

Texas caps annual appraisal increases at 10% for homestead properties, but this cap only applies once you file — submit your Homestead Exemption application to the Williamson County Appraisal District by April 30 of the year following purchase. The exemption removes a portion of assessed value from school and county taxes, typically saving $800–$1,500/year even on a median $370,400 home in this fast-growing county. File your exemption with the Williamson County Assessor immediately after closing and request confirmation of your homestead cap status, as Williamson County appraisals tend to increase rapidly.