This note is provided for the Scottish Public Pensions Agency (SPPA) as scheme manager of the Scottish Teachers' Superannuation Scheme (STSS) and the Scottish Teachers' Penson Scheme 2015 (STPS). The purpose of the note is to update the factors for determining the cost of Additional Pension (AP) for members in the STSS and the STPS.

This note also provides guidance for when a member who had a monthly AP contribution election does not complete their payment period, that is:

• how the paid-up AP credit should be calculated (if no further contributions are to be made), and
• how the lump sum to purchase the outstanding AP amount should be calculated (so that the member will be credited with the AP in the original election).

There is a maximum overall amount of extra pension a member can purchase and this note provides guidance on how the amount of AP purchased should be compared with the overall extra pension limit.

If a member has more than one election to purchase AP then each election must be treated separately for the purposes of making calculations under this note.

The following changes have been made when reviewing this guidance:

• Important information around the expected audience for the guidance, use of the guidance, review of factors, compliance and limitations applies across all sets of guidance. Rather than being repeated in each set of guidance, this can now be found on the scheme home page. It is important to read this information alongside the guidance.
• Calculation methodology: No changes have been made to the calculation methodology.
• Examples: There are no examples in this guidance. Worked examples, using the calculation methodology, can be found in prior versions of the guidance (though please note that these use historical factors).
• Factor tables: The "Factor Tables" tab contains the names of the tables that are referenced in the calculation methodology. The tables of factors themselves can be found in the most recently published "Consolidated Factors Workbook" which is available by clicking the "Download current Consolidated Factors Workbook" button on the scheme's home page.
• Assumptions: The key assumptions underlying the factors in each note are contained in the Consolidated Factors Workbook.
• Regulations: The regulations that require the production of the actuarial factors and/or guidance that is the subject of this note are summarised in the "Regulations" tab.