What is the main difference between accrual and deferral adjustments? Multiple Choice Deferral adjustments are required to update previously recorded items whereas accrual adjustments are required to include items not previously recorded. Deferral adjustments are used for expenses whereas accrual adjustments are used for revenues. Deferral adjustments are required to include items not previously recorded whereas accrual adjustments are required to update previously recorded items. Deferral adjustments are required under the cash basis of accounting whereas accrual adjustments are required under the accrual basis of accounting