Texas Estates Code - EST § 1151.201. Mortgage or Pledge of Estate Property Authorized in Certain Circumstances

(1) the payment of any ad valorem, income, gift, or transfer tax due from a ward, regardless of whether the tax is assessed by a state, a political subdivision of the state, the federal government, or a foreign country;

(2) the payment of any expense of administration, including amounts necessary for the operation of a business, farm, or ranch owned by the estate;

(3) the payment of any claim allowed and approved, or established by suit, against the ward or the ward's estate;

(4) the renewal and extension of an existing lien;

(5) an improvement or repair to the ward's real estate if:

(6) the purchase of a residence for the ward or a dependent of the ward, if the court finds that borrowing money for that purpose is in the ward's best interests;  and

(7) funeral expenses of the ward and expenses of the ward's last illness, if the guardianship is kept open after the ward's death.

(1) make an improvement or repair to the homestead;  or

(2) pay for the ward's education or medical expenses.