20 Pa.C.S. § 6201: Right to disclaim.

A person to whom an interest in property would have devolved by whatever means, including a beneficiary under a will, an appointee under the exercise of a power of appointment, a person entitled to take by intestacy, a joint tenant with right of survivorship, a donee of an inter vivos transfer, a donee under a third-party beneficiary contract (including beneficiaries of life insurance and annuity policies and pension, profit-sharing and other employee benefit plans), and a person entitled to a disclaimed interest, may disclaim it in whole or in part by a written disclaimer which shall:

(1) describe the interest disclaimed;

(2) declare the disclaimer and extent thereof; and

(3) be signed by the disclaimant.

The right to disclaim shall exist notwithstanding any limitation on the interest in the nature of a spendthrift provision or similar restriction.