§ 363.205 How do I reinvest the proceeds of a maturing security held in TreasuryDirect ®?

(a) Method for reinvesting a maturing security. The only method of reinvesting a maturing marketable security in TreasuryDirect ® is through the automatic reinvestment option available in your TreasuryDirect account. Purchasing a security by directing that the proceeds of a maturing security be used to purchase a zero-percent certificate of indebtedness, and then scheduling the purchase of a new security using the redemption proceeds of the zero-percent certificate of indebtedness, is not a reinvestment.

(b) When a reinvestment can be scheduled, edited, or canceled. You can schedule your reinvestment either at the time of purchase or after the security is issued into your TreasuryDirect account. You cannot schedule, edit, or cancel a reinvestment when the maturing security goes into a closed book period, or when a noncompetitive bid for the replacement security is no longer accepted, whichever comes first.