Note 21: Memorandum account

Actual
2015/16
$000
Actual
2014/15
$000
Main Estimates*
2015/16
$000
Audit and assurance services
Balance at 1 July 2,345 534 2,380
Revenue 78,335 78,314 75,222
Expenses (77,436) (76,503) (75,346)
Surplus for the year 899 1,811 (124)
Balance at 30 June 3,244 2,345 2,256

* All Estimates information is unaudited.

The memorandum account summarises the accumulated surpluses and deficits incurred in the provision of audit and assurance services by the Office on a full cost recovery basis. These transactions are included as part of the Office's operating income and expenses in the surplus/deficit, but are excluded from the calculation of the Office's repayment of surplus (see Note 13). The cumulative balance of the surplus/deficit of the memorandum account is recognised as a component of equity (see Note 15).

The memorandum account assists the Office to manage fluctuating revenue flows and assist with keeping audit fees at reasonable levels over time. The memorandum account balance will be taken into account when setting audit fees in future years.