A family limited partnership is a taxable entity in Texas unless it meets the criteria of a passive entity under TTC 171.0003.

The annual franchise tax report is due May 15. If May 15 falls on a  weekend or holiday, the due date will be the next business day.  

 The following penalties apply if Franchise taxes are paid after the due date:

• A $50 penalty is assessed on each report filed after the due date.
• If tax is paid 1-30 days after the due date, a 5 percent penalty is assessed.
• If tax is paid over 30 days after the due date, a 10 percent penalty is assessed.
• Past due taxes are charged interest beginning 61 days after the due date.

A sole proprietorship that is not legally organized in a manner that  limits its liability is not a taxable entity. A single-member limited  liability company filing as a sole proprietor for federal income tax  purposes is a taxable entity. TTC 171.0002(d).

Yes. A royalty interest in an oil or gas well is considered an  interest in real property. Therefore, a non-Texas entity that owns a  royalty interest in an oil or gas well in Texas is considered to own  real property in Texas and is subject to the franchise tax unless it is a nontaxable entity.