Catch-up bookkeeping is the process of going back through one or more months (or years) of activity, categorizing every transaction, reconciling each account, and producing the P&L and balance sheet that should have been produced at the time.
Independent bookkeepers typically charge $300–$600 per month being caught up. At GuidedLedger, catch-up is free with any monthly subscription — up to 12 months back, included.