Why do accountants not keep all the accounts at their proper balances continuously throughout the period so that adjusting entries would not have to be made before financial statements are prepared

The transactions are recorded when they incur and then there may be some changes in those transaction later on, they all are adjusted at month end with adjusting entries.

Explanation:

It is not possible for an accountant to continuously keep updating every transaction. They all are recorded at inception and then any changes made in those transactions are adjusted at the month end. All balance are reconciled and verified. There can be events which lead to changes to the transaction after the reporting date then these events are considered as events after reporting period and they are treated differently according to guidelines specified in IAS 10.

answer; property tax payment made in july and december;