Before an executory contract is signed by the purchaser, the seller shall provide to the purchaser a written statement that specifies:
(1) the purchase price of the property;
(2) the interest rate charged under the contract;
(3) the dollar amount, or an estimate of the dollar amount if the interest rate is variable, of the interest charged for the term of the contract;
(4) the total amount of principal and interest to be paid under the contract;
(5) the late charge, if any, that may be assessed under the contract; and
(6) the fact that the seller may not charge a prepayment penalty or any similar fee if the purchaser elects to pay the entire amount due under the contract before the scheduled payment date under the contract.
Official text of the Texas Property Code as published by the Texas Legislative Council.