1. (a) For out-of-state service credit, military service credit, work experience service credit purchased under Government Code §823.404, and USERRA service credit, a member may choose to purchase fewer years of service credit than the total years of service credit which the member is eligible to purchase. The years of credit shall be purchased in the order in which they appear on the TRS bill for the purchase.
2. (b) For military service, work experience service credit purchased under Government Code §823.404, and USERRA service, the member must complete payment for the number of years of credit that the member has chosen to purchase before purchasing additional years of the same kind of service credit by either lump sum payment or by additional installment payments. For out-of-state service credit, a member who has entered into an installment agreement may be billed for additional years of out-of-state service as he or she becomes eligible to purchase additional years.
3. (c) A member must purchase all withdrawn service credit and all unreported service credit and may not choose to purchase these types of service credit in yearly increments. A member will not receive any credit for withdrawn or unreported service until the entire balance due and all fees have been paid.

Source Note:The provisions of this §25.182 adopted to be effective September 1, 1992, 17 TexReg 5120; amended to be effective June 1, 1995, 20 TexReg 3733; amended to be effective March 12, 2003, 28 TexReg 2100; amended to be effective April 1, 2011, 36 TexReg 1839.