Every item on the tax-ready books checklist for accountants below came from a file like the one in this story. It's a composite. I put it together from patterns my team and I see every January, and the names and figures are illustrative, not a real client. If you've prepared returns for small businesses, you'll recognize every detail.
The file that landed on January 27
Dana is a partner at a four-person tax firm north of Austin. One of her S-corp clients is a residential and light-commercial remodeling contractor in Round Rock with about $1.8 million in revenue, two trucks, an equipment loan, and an owner who treats the operating account as a personal checking account. The owner has kept the books in QuickBooks Online all year, with Gusto running payroll. On January 27 the owner emails a login and writes: "Books are done, should be clean this year."
Dana has done this for nineteen years, so she doesn't open the 1120-S. She opens the balance sheet and works a list first. It's the same list every time, because the return is only as good as the trial balance under it, and a preparer who finds a problem in March pays for it twice: once in rework and again in the extension conversation.
Here's the list, in the order she works it, with notes on why each item matters and what she found.
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What does a tax-ready books checklist check first? Items 1 through 4
Dana starts with cash and the accounts that hide unposted activity. If these are wrong, nothing lower on the list can be trusted.
1. Every bank and credit card account reconciled through December 31
She checks the reconciliation report, not the green checkmarks in the bank feed. The reconciled ending balance has to match the December statement, and she looks for uncleared items older than about 90 days.
What she found: Operating was reconciled through November. The company credit card had never been reconciled.
Annotation: A bank feed shows that transactions were imported. It doesn't show that they're complete or unduplicated. A card that has never been reconciled usually holds duplicate charges from a reconnected feed, and each one overstates expenses on the return.
2. Clearing accounts at zero
Undeposited Funds (or Payments to Deposit), payroll clearing, and any Stripe or Square clearing account should all be at zero or close to it at year-end.
What she found: Undeposited Funds carried $41,300, going back to March.
Annotation: A balance in Undeposited Funds almost always means one of two things. Either customer payments were recorded against invoices and then entered again as separate deposits from the bank feed, which doubles revenue, or deposits were never matched at all. You can't tell which until someone traces them. Processor deposits need their own attention too: if a payout arrives net of processing charges, the gross sale and the charge both have to be booked.
3. Uncategorized and "Ask My Accountant" accounts at zero
What she found: $18,900 in Uncategorized Expense and a suspense account labeled "Ask CPA."
Annotation: The account name tells you who the bookkeeper thought would clean it up. A tax-ready file sends questions as a written list and never parks them in the general ledger.
4. AR and AP agings tie to the balance sheet
The aging report total should equal the balance sheet line. Old open invoices should be either collected or written off, and the file should say whether the books are kept on a cash or accrual basis.
What she found: Eleven open invoices from 2024. Two had been paid in cash and never applied.
Why do loan and equity balances break more tax-ready books than revenue does? Items 5 through 8
Revenue mistakes are easy to spot. Balance sheet mistakes get past everyone until Schedule L won't balance or M-2 won't roll forward. These four items are where a preparer's March usually goes.
5. Prior-year adjusting entries posted, and opening equity tied to last year's return
Dana pulls last year's Schedule L. Ending retained earnings, AAA-related equity, and every balance sheet line on that return should match the January 1 balances in QuickBooks.
What she found: Opening equity was off by $12,640. Her own firm's adjusting entries from last year (depreciation, the officer health insurance reclass, and an accrued interest entry) had been emailed to the client and never posted.
Annotation: This is the most common single break I see, and it's the preparer's own work coming back around. A bookkeeper who meets the standard asks for the prior-year AJEs in writing, posts them, and then locks the period.
6. Loan balances tie to lender year-end statements
What she found: The equipment loan payment had been booked entirely to interest expense all year, so the liability never went down. One truck loan had been recorded at the vehicle price, not the amount financed, so dealer charges, title, and the Texas motor vehicle tax were missing.
Annotation: Business lenders don't send a 1098 the way mortgage lenders do. The bookkeeper should download the lender's December statement or amortization schedule, split each payment into principal and interest, and attach the statement to the file. If the loan doesn't tie, interest expense is wrong too.
7. Owner activity separated: distributions, shareholder loans, personal spending
What she found: A personal Amex paid from operating every month and coded to "Office Supplies," plus a $25,000 transfer to the owner's brokerage account coded as a contractor payment.
Annotation: The bookkeeper's job is classification. It isn't the tax conclusion. Personal spending comes out of expense and goes to distributions or a shareholder receivable, whichever the preparer's workpapers use. Whether distributions are reasonable next to wages is a tax question, and it belongs to the CPA.
8. Payroll in the general ledger ties to the payroll filings
Gross wages on the four 941s and the W-3 should match wage expense in the GL. Officer compensation should be separated so it's ready for Form 1125-E. State unemployment filings, which go to the Texas Workforce Commission here, should agree too.
What she found: The owner's health premiums were paid by the company and booked to insurance expense, but they never went through payroll.
Annotation: Under IRS Notice 2008-1, premiums for a more-than-2% shareholder belong in W-2 wages. The bookkeeper doesn't decide the treatment. The bookkeeper's job is to catch it in December, while payroll can still fix it, and not leave it for February.
Which compliance tie-outs belong on the accountants' checklist? Items 9 through 11
9. The 1099 vendor list is complete and reconciled to payments
A W-9 should be on file for every vendor. Payments should be totaled by vendor, and card or payment-app payments excluded because processors report those on Form 1099-K. Threshold changes make this harder this year. Under the One Big Beautiful Bill Act, the NEC and MISC threshold rises from $600 to $2,000 for payments made in 2026, so January 2027 is the first filing season under the new number. The IRS Form 1099-NEC page has current instructions. January 31, 2027 falls on a Sunday, which moves the deadline to Monday, February 1. Filers with 10 or more information returns in total must e-file.
What she found: Nine subcontractors, three without W-9s, and one paid partly by check and partly by Venmo business payments.
Annotation: This item runs on a hard deadline that comes before the return, so it has to be finished in January whatever else is left open. More detail on timing is in our 1099 filing deadline guide.
10. The sales tax liability ties to returns actually filed
According to the Texas Comptroller, the state sales and use tax is 6.25%, and local jurisdictions can add up to 2%, so the combined state and local ceiling is 8.25%. The payable account on December 31 should equal what was reported on the December or Q4 return, and collected sales tax should never show up as revenue.
What she found: Sales tax had been charged on every invoice, including residential remodels.
Annotation: Texas treats residential repair and remodeling as nontaxable and nonresidential remodeling as taxable. A contractor who does both needs separate item codes. This client had over-collected from homeowners. Whether and how to fix that is a question for the CPA and possibly the Comptroller, not the bookkeeper. The bookkeeper's job is to bring it up.
11. The franchise tax inputs are identified
Texas has no personal income tax, but most entities file a franchise tax report by May 15. The bookkeeper should confirm the total revenue figure the preparer will use against the no-tax-due threshold and point out anything that complicates it, such as pass-through subcontractor payments.
How should accountants handle fixed assets and the prior-year comparison? Items 12 through 14
12. Fixed asset additions and disposals are documented and tied to the depreciation schedule
Each addition needs an invoice, a placed-in-service date, and the full cost basis. Disposals and trade-ins need the payoff and the sale or trade figures. The fixed asset GL should match last year's depreciation schedule plus this year's activity.
What she found: The old truck was traded in and still on the books. A $6,800 tile saw was expensed as Tools.
Annotation: Capitalize or expense, de minimis safe harbor or not, bonus or Section 179: every one of those is the preparer's decision. The bookkeeper applies the firm's written capitalization policy and makes each asset easy to find.
13. Cutoff and accruals are clean
For accrual clients, December bills have to land in December and January bills in January. For a contractor, retainage receivable and progress billings have to be where the preparer expects them.
14. A prior-year flux review with written explanations
This is a P&L and balance sheet comparison, line by line, against last year, with a one-sentence note on any line that moved more than about 20%.
What she found: Materials up 38% while revenue was up 9%. Once items 1 through 3 were fixed, most of that turned out to be the duplicated card charges.
Annotation: The flux review is how the bookkeeper checks their own work. If the bookkeeper can't explain a swing, the preparer shouldn't be the first person to find it.
What the file looked like once the checklist cleared
The remodeling file took about three weeks of back-and-forth to clear all fourteen items. Revenue came down by about $38,000 once the duplicate deposits were removed. Expenses came down more than that once the card duplicates and personal spending came out. Opening equity tied. Dana's return took one sitting.
The lesson isn't that owners shouldn't keep their own books. It's that the list only helps if someone works through it before January, and that person shouldn't be a partner spending partner hours on reconciliations. We cover the calendar side of this in getting ahead of the February rebuild, and the full deliverable package in the year-end handoff every tax preparer wishes they got.
The printable version
- Every bank and card account reconciled through 12/31, with no stale uncleared items.
- Clearing accounts (Undeposited Funds, payroll, processor) at zero, and processor charges grossed up.
- Uncategorized and suspense accounts at zero, with open questions sent as a written list.
- AR and AP agings tie to the balance sheet, and the accounting basis is stated.
- Prior-year AJEs posted, and opening equity ties to the prior-year Schedule L.
- Every loan ties to the lender's year-end statement, with principal and interest split.
- Owner draws, distributions, and shareholder loans separated from expense.
- Payroll GL ties to the 941s, W-3, and state filings, with officer compensation identified.
- 1099 vendors have W-9s, payment totals, and card or app payments excluded.
- Sales tax payable ties to filed returns, and taxable and nontaxable sales are coded correctly.
- Franchise tax revenue inputs identified.
- Fixed asset additions and disposals documented and tied to the depreciation schedule.
- Year-end cutoff and accruals reviewed.
- Prior-year flux review with a written note on every material swing, and the period locked.
Where does the bookkeeper's checklist stop and the preparer's work start?
The line is simple. The bookkeeper works items 1 through 14 and delivers a closed, locked, documented trial balance with a written list of open questions. The preparer makes every tax decision: elections, depreciation methods, reasonable compensation, sales tax remediation. At Turnkey CFO we sit on the bookkeeping side of that line. We never prepare, review, or sign a return. The firm keeps the client and all the tax work, and we hand back books that meet this checklist in January. If you're setting up that kind of arrangement, our CPA firm partnership page explains how it runs, and how a CPA firm refers bookkeeping clients without losing them covers how the relationship works day to day. If a referral arrangement involves any compensation, read section 1.520 of the AICPA Code of Professional Conduct and talk to your state board. In Texas that's the Texas State Board of Public Accountancy. Don't rely on a bookkeeper's reading of the ethics rules.
Questions preparers ask about tax-ready books
Should I send this checklist to clients who keep their own books?
Yes, in November, along with a date by which you want it back. Clients can usually handle items 1 through 4. Items 5 through 12 normally need a bookkeeper, because they depend on your prior-year workpapers and on third-party statements.
What's the fastest way to tell whether a file is actually tax-ready?
Check item 5 first. If opening equity doesn't match last year's Schedule L, the books have been running separately from your work, and the rest of the checklist will probably turn up more problems.
Does the new $2,000 1099 threshold change what the bookkeeper tracks?
It changes who gets a form, not what gets tracked. Keep collecting W-9s and totaling payments for every vendor, because the threshold applies to annual totals and a vendor can cross it late in the year.
Who fixes a problem the checklist uncovers, like over-collected sales tax?
The bookkeeper documents it and brings it up. The CPA decides the treatment and talks with the client and, if needed, the taxing authority. Keeping those two roles separate protects both firms.
Frequently asked questions
Should I send this checklist to clients who keep their own books?
Yes, in November, along with a date by which you want it back. Clients can usually handle items 1 through 4. Items 5 through 12 normally need a bookkeeper, because they depend on your prior-year workpapers and on third-party statements.
What's the fastest way to tell whether a file is actually tax-ready?
Check item 5 first. If opening equity doesn't match last year's Schedule L, the books have been running separately from your work, and the rest of the checklist will probably turn up more problems.
Does the new $2,000 1099 threshold change what the bookkeeper tracks?
It changes who gets a form, not what gets tracked. Keep collecting W-9s and totaling payments for every vendor, because the threshold applies to annual totals and a vendor can cross it late in the year.
Who fixes a problem the checklist uncovers, like over-collected sales tax?
The bookkeeper documents it and brings it up. The CPA decides the treatment and talks with the client and, if needed, the taxing authority. Keeping those two roles separate protects both firms.