What is the purpose of locking a period in QuickBooks Online after year-end adjustments?

• A. To enforce automatic tax calculations.
• B. To disable bank feeds.
• C. To permanently delete old transactions.
• D. To prevent changes to transactions in that period.

Answer: (D)

Locking a period is about keeping the finalized books intact. After you finish year-end adjustments, you close the period so that no edits can be made to transactions within that time frame. This preserves the exact ending balances and reported results, ensuring consistency for financial reporting and audits. It’s not about tax calculations, bank feeds, or deleting old transactions—those are separate functions. If you ever need to make changes again, you can reopen the period or adjust the close date with the appropriate permissions.