Behind on Bookkeeping?How to Get 6–12 Months of Books Caught Up
By Ana Lee Malongayon, CPA | Entrepreneur

If your bookkeeping is six to twelve months behind, start by identifying the last reliable reconciled month, gathering statements for every business account, and agreeing on a plan to work forward. You do not need to fix everything before asking a bookkeeper for help. You do need to know what records are available and what questions remain unanswered.
For a busy US business owner, overdue books can make even simple decisions uncomfortable. You may have money in the bank but no dependable view of profit, outstanding bills or customer balances. A structured catch-up project turns that backlog into defined work.
Do you need catch-up bookkeeping, cleanup, or both?
Catch-up bookkeeping brings missing periods up to date. Cleanup corrects problems in records that already exist. If transactions have been imported into QuickBooks but never reviewed or reconciled, you may need both.
For example, a consultant with eight months of unrecorded activity needs catch-up work. A business with those months entered twice, transfers recorded as sales and unexplained credit-card balances needs cleanup too. The number of overdue months alone does not describe the job.
1. Find the last reliable starting point
Write down the last month each bank and credit-card account was reconciled to its statement. These dates may differ. A connected bank feed does not, by itself, establish that the books are complete.
If you cannot identify a dependable starting balance, say so at the outset. Intuit’s guidance on beginning-balance issues explains why checking the beginning balance matters when reconciling QuickBooks Online. Avoid adding an unexplained adjustment simply to make the difference disappear.
2. Gather records by account and month
Create a folder for each account, then organize documents by month. Include accounts that were closed during the period. A practical starting checklist is:
- Business bank and credit-card statements for the overdue periods, plus the preceding statement where needed.
- Loan statements and supporting agreements for balances being reviewed.
- Customer invoices, supplier bills and receipts that explain the transactions.
- Payment-processor reports showing sales, fees, refunds and payouts.
- Payroll reports if payroll activity is within the agreed scope.
- Prior financial reports, reconciliation reports and adjustments supplied by your accountant.
Tell the bookkeeper about personal spending through business accounts, owner deposits and transfers between accounts. If documents are missing, make a list of the gaps. Do not guess classifications to make the file look finished.
3. Agree on the work before corrections begin
A useful proposal specifies the accounts, date range, deliverables, fee, expected timing and information you must supply. It should also explain what happens when the review uncovers additional work.
Ask whether the project includes only bank and credit-card activity or also receivables, payables, loans, payment processors and other balances. Confirm how material or unusual items will be discussed with you or your accountant.
BA’s bookkeeping cleanup and catch-up service is scoped after reviewing the records. Ongoing monthly support is a separate decision.
4. Work forward and keep a questions list
Once the starting point is established, a practical approach is to review and reconcile the oldest outstanding period before moving forward. Investigate missing or duplicate activity and document significant corrections.
Keep one shared questions list rather than scattering answers across messages. For each unclear item, record the date, amount, account, question and supporting document needed. Assign one person in your business to respond so the project does not stall.
For example, a deposit may represent a customer payment, an owner contribution or a transfer. The transaction description alone may not settle which it is. Your explanation and the supporting record can prevent an incorrect entry.
5. Review the handoff, not just the final balance
Before treating the project as complete, compare the deliverables with the agreed scope. Ask for:
- Reconciliation reports for the covered accounts and periods.
- Updated financial reports for review.
- An explanation of significant corrections.
- A list of unresolved balances, missing documents and follow-up questions.
- A clear statement of the last completed period.
Bookkeeping cleanup does not itself include filing a US tax return. If the records relate to previously filed returns or uncertain tax treatment, involve your US CPA or Enrolled Agent before deciding what tax action is needed.
6. Keep new months from joining the backlog
While historical work is underway, agree who will handle current transactions. Set a recurring date for supplying records and reviewing questions. Otherwise, an eight-month backlog can become a ten-month backlog before the original project ends.
You can retain the work in-house or arrange recurring bookkeeping after cleanup. Choose based on your time, complexity and reporting needs, with a separate scope and fee if you engage ongoing support.
Questions owners ask before getting help
Can a bookkeeper catch up an entire year?
Potentially, yes. Feasibility and timing depend on transaction volume, account complexity, reliable starting information and available records. A full year with two straightforward accounts can be very different from a year with multiple processors and incomplete statements.
How long will six months of catch-up take?
There is no reliable timeline based on months alone. Ask for an estimate after the file review, including assumptions about documents and how quickly you can answer questions.
Should I organize everything before booking a call?
No. Start with your software, approximate backlog, account count and deadline. You can explain what is missing without solving it first.
Ready to work through your backlog?
Book a free 30-minute discovery call with Bookkeeping Accountant. Tell us how far behind the books are and what you need them for. We will discuss fit and the information needed to prepare a cleanup quote. You approve the scope and fee before work begins; monthly bookkeeping remains optional.
