Inside LawAccounting's Accounting Periods & Period-Lock Engine: How Law Firms Freeze a Closed Month So Nobody Back-Dates an Entry Into It (2026 Feature Spotlight)

You closed March. You sent partners the P&L. Six weeks later the March number is different — because someone posted a back-dated time entry, expense, or journal into a period everyone thought was finished. Here is how period locking works in LawAccounting, and why it is the single most underrated control in legal accounting.