Bookkeeper and CPA collaboration works when each side owns a clear set of entries. The bookkeeper records the year's transactions and reconciles every account; the CPA makes tax and year-end adjustments. The CPA's adjusting entries then go back into the books before the next period, and both firms follow one shared calendar for the client.
Who owns which entries in bookkeeper and CPA collaboration?
In bookkeeper and CPA collaboration, the bookkeeper owns the transaction record and the CPA owns the adjustments that turn it into a tax return or year-end statements. The bookkeeper's books should be complete and reconciled before the CPA starts. The CPA's entries should be few, documented and sent back in a form the bookkeeper can post.
A typical split looks like this. Every client relationship differs, so agree the details with each CPA rather than assuming them.
| Entry type | Usual owner | Notes |
|---|---|---|
| Bank and card transactions | Bookkeeper | Every line, every account, every month |
| Monthly reconciliations | Bookkeeper | Statement balance tied for each account |
| Owner draws and contributions | Bookkeeper | Recorded as they happen, questioned when unclear |
| Accruals the client asked for monthly | Bookkeeper | Only if the engagement includes accrual work |
| Depreciation | CPA | Often calculated in the CPA's tax software |
| Tax provisions and tax-driven reclassifications | CPA | Depend on tax positions the CPA takes |
| Year-end accruals and prepaid adjustments | Agreed per client | Write down who does them in each engagement |
The rows marked "agreed per client" cause the most trouble. If neither side knows who books the year-end accrual for an unpaid December invoice, it gets booked twice or not at all. Settle these rows in writing before the first year end you share.
Getting CPA adjusting entries back into the client's books
CPA adjusting entries reach the client's books when the CPA sends them as a list of journal entries with dates, accounts and amounts, and the bookkeeper posts them to the closed year. Until those entries are posted, the books and the tax return disagree, and the next year's opening balances are wrong.
Ask the CPA for the adjustments in a consistent form:
- A list of each journal entry with its date, usually the last day of the fiscal year.
- The account names as they appear in the client's chart of accounts, not the CPA's internal codes.
- A short reason for each entry, such as "depreciation for the year" or "reclassify loan principal paid as expense".
- The final trial balance after adjustments, so you can check your posted result against it.
Once posted, compare your adjusted trial balance with the CPA's. If they match, lock the year in the accounting system if it allows that. If they do not match, the cause is usually an entry posted to the wrong year or an account that was renamed during the year.
A frequent snag is a reclassification that also implies a rule change. If the CPA moves a recurring vendor from one expense account to another, the bookkeeper should update the client's coding rule too. Otherwise the same line goes to the old account every month of the new year, and the CPA moves it again next spring.
A shared bookkeeper and CPA calendar for each client
A shared calendar gives each client one list of dates both firms work to: when the books close, when the CPA receives them, when adjustments come back and when quarterly items are due. Write it once at the start of the year and send it to the CPA and the client.
Here is an example calendar for a calendar-year client. The dates are illustrative, and the tax-related deadlines vary by entity type and location, so confirm them with the CPA.
| Month | Bookkeeper | CPA |
|---|---|---|
| January | Close December, list contractors paid during the year | Prepare contractor information returns from the list |
| February | Close January, send year-end package | Review package, send questions |
| March | Answer CPA questions, close February | Prepare return or extension, send adjustments |
| April | Post prior-year adjustments, close March | Quarterly estimate if the client pays them |
| May | Close April | Available for questions |
| June | Close May, mid-year review of coding | Mid-year planning call if agreed |
| July | Close June | Quarterly estimate if applicable |
| August | Close July | Available for questions |
| September | Close August | Quarterly estimate if applicable, extended returns |
| October | Close September | Year-end planning with the client |
| November | Close October, flag large planned purchases | Advise on timing of purchases |
| December | Close November, confirm contractor details on file | Final planning items |
The January row depends on one detail: the bookkeeper's books show who was paid for services, and the CPA or client files the forms. The IRS describes Form 1099-NEC as the form for reporting nonemployee compensation. A clean vendor list, with contractors tagged during the year, makes that January step short.
What should a bookkeeper send the CPA, and in what form?
A bookkeeper should send the CPA a year-end package: the closed books in a form the CPA can open, every account's December reconciliation, the year's statements, and a short list of open questions. Ask the CPA what format they prefer before the first year end; many prefer direct access to the client's accounting file over exported reports.
A year-end package checklist, as an example:
- Profit and loss and balance sheet for the full year, plus the general ledger.
- Reconciliation reports for each bank, card and loan account at year end.
- The year's bank and card statements, named by client, account and month.
- A list of fixed assets bought or sold during the year, with invoices.
- Loan statements showing principal and interest split.
- Owner contributions and draws, totalled.
- A note of anything unusual: a lawsuit settlement, an insurance payout, a new bank account opened late in the year.
- Your open questions, each with the transaction it refers to.
Industry details belong in the package too. For a gym, for example, the CPA will want to know how membership prepayments and failed card payments were handled, which the guide to gym bookkeeping, memberships and failed payments covers.
Questions that belong to the CPA, not the bookkeeper
Questions about tax treatment, tax elections, entity choice and what the client owes belong to the CPA. A bookkeeper records what happened and how it was coded. When a client asks "can I deduct this?" or "should I buy the truck in December?", the bookkeeper's job is to route the question to the CPA with the facts attached.
Routing well saves both firms time. A useful handoff includes the client's question in their words, the transactions it concerns, and the account they are currently coded to. The CPA then answers once, and the bookkeeper applies the answer to the coding.
Some questions sit on the line, such as whether a purchase is an expense or an asset. The bookkeeper can apply a threshold the CPA has set for that client and send anything above it for a decision. Write that threshold into the client's notes so every preparer applies it the same way.
Keep a running log of these routed questions per client, with the date asked, the date answered and the answer itself. The log stops the same question going to the CPA twice, and it gives a new preparer the reasons behind coding choices that would otherwise look arbitrary. At year end, the log also shows the CPA which decisions they already made.
When the CPA and the bookkeeper both edit the same period
The edge case that breaks a closed month is two people editing it at once. If the CPA posts adjustments directly into the client's books while the bookkeeper is still working the same year, entries can collide: a reclassification is undone by a rule, or a reconciled account stops balancing without anyone knowing why.
Three habits prevent most collisions:
- Agree a handoff date. After that date, the bookkeeper stops editing the closed year unless the CPA asks.
- Agree who posts. Either the CPA posts adjustments and tells the bookkeeper, or the bookkeeper posts them from the CPA's list. Never both.
- Lock what you can. Many accounting systems allow a closing date or a lock on prior periods. Set it after the adjustments are posted.
If a collision has already happened, compare the reconciliation reports for the affected accounts with the statements, find the entries dated after the handoff, and decide together which ones stay. Then make sure the client's monthly work in the new year starts from the adjusted balances.
Referral and fee arrangements between bookkeepers and CPAs
Bookkeeper and CPA referral arrangements range from informal mutual referrals to white-label work, where the bookkeeper does the books under the CPA firm's name. The commercial setup should be clear to the client: who they pay, who they call, and who is responsible for what.
Before agreeing anything, look at what the arrangement does to your workload. A CPA who sends ten new clients in a month is good news only if you can absorb them, and the guide to how many clients a bookkeeper can handle helps you check that against your hours. Track the referred clients separately for a year, using measures such as hours per client and on-time closes from your bookkeeping practice KPIs, so you can see whether the relationship pays.
If the CPA wants you to work under their brand, white label bookkeeping for CPA firms explains how that model works in practice. Either way, a bookkeeper who delivers reconciled books on the agreed date becomes the partner a CPA keeps. AutoBankConvert supports that kind of reliable monthly close by converting each client's statements, checking every statement's balance, and exporting files ready for QuickBooks or Xero, so the books you hand over start from complete data. You can see how a monthly batch runs on the homepage.