Tax on property management services?

[Nathan Mauzy]

I have three rental properties in the Houston area. My family and I recently relocated to Arizona and so we reached out to a friend who has a handyman business to ask him to property manage for us. He is asking questions about goods and service tax add ons to the monthly fees. Can anyone let me know if you pay additional fees for tax on top of the monthly service fees? We agreed to a $100/property fee so he is asking about charging another $25-30 on top of that for taxes. Thanks for any advice. Nathan