Spreadsheet model

New Zealand Superannuation Fund Contribution Rate Model - HYEFU 2020

This is the Treasury’s model that is used to calculate the government's capital contribution to the New Zealand Superannuation (NZS) Fund.

This model, which is in MS Excel workbook format, calculates the contribution rate for pre-funding New Zealand Superannuation (NZS). The model was updated at the time of the release of the Half Year Economic and Fiscal Update 2020 (HYEFU 2020).

Since the last release with the Pre-election Economic & Fiscal Update 2020 (PREFU 2020) the model’s data inputs have been updated. Specifically, the model uses the latest five-year forecasts of the NZSF’s earnings and tax payments and longer-term projections of nominal GDP and aggregate net (after-tax) NZS expenditure. 

Tables in the Half Year Economic and Fiscal Update show the Government’s planned capital contributions, alongside what the capital contributions would have been if they had resumed in 2020/21 under the legislated formula in Section 43 of the New Zealand Superannuation and Retirement Income Act 2001.

The two sets of numbers are not strictly comparable over the forecast period as the capital contributions required in any year under the legislated formula depend, in part, on the contributions in previous years. Reduced capital contributions in earlier years will increase the contributions required under the legislated formula in later years.

In the tables in the HYEFU document, planned contributions from 2020/21 to 2021/22 have been factored into the contribution profile intended by the Government but not the contributions as prescribed by the legislated formula.

Between 2019/20 and 2022/23, small percentages of the capital contributions are transferred to a new fund, administered by the Guardians of New Zealand Superannuation, which will invest in New Zealand’s early stage capital markets via New Zealand Venture Investment Fund Limited. While the legislated formula is used to calculate the capital contribution in 2022/23, this amount is reduced by $40 million that will be redirected to investment in early stage capital markets.

From 2023/24 onwards, annual capital contributions (and withdrawals in later years) are equal to those prescribed by the legislated formula.

For information purposes, the model contains two additional worksheets:

  • NZS data This gives historical data, and the latest forecasts and projections, for aggregate NZS expenditure, both inclusive (gross) and exclusive (net) of tax, and average NZS recipient numbers over fiscal years. Expenditure data is given in nominal dollar terms and as a percentage of nominal GDP.
  • NZSF history This gives historical data on the NZSF since its inception in 2001/02 up to and including the latest historical fiscal year (year ended 30 June).

The projected gross NZS tracks in the NZS data worksheet display a potential path, beyond the latest forecast horizon, of the aggregate NZS expenditure numbers. These are in gross of tax terms, which is how all expenses in the Financial Statements of the Government of New Zealand are recorded.

The MS Excel workbook New Zealand Superannuation Fund (NZSF) Contribution Rate Model is a special purpose document and cannot be supplied in HTML format. The modelling guide in Adobe PDF format can be supplied in HTML format if requested from Information Services.
Using MS Excel Files Using PDF Files.