Final answer:
The last adjusting entry made is the income summary entry, which accounts for all previous adjustments' effects on net income and transfers the final figure to the owner's equity section.
Step-by-step explanation:
The type of adjusting entry that is recorded last, because the amount is calculated after taking into account the effect on net income of all other adjustments recorded at the end of the period, is the income summary entry. This adjusting entry is made to transfer the net income or loss for the period to the owner's equity section of the balance sheet. Since it consolidates all the revenue and expense account balances, it must be done after all other adjusting entries have been recorded to ensure that the net income figure is accurate.