Updated
Being behind on your books is common, and it is fixable. The useful question isn't "how do I get caught up?" but "caught up to what?" A business with payroll and inventory needs complete, reconciled books. A one-person consultancy filing Schedule C often needs something smaller: every account's statements, every income form, and a clear list of business expenses with the documents behind them.
What is catch-up bookkeeping?
Catch-up bookkeeping is recording, after the fact, every transaction from the months nobody entered, then reconciling each account so the books agree with the bank. It usually ends with a profit and loss statement and a balance sheet for the period.
A typical catch-up engagement involves:
- Collecting statements for every business bank account, credit card, loan and payment app for the whole period
- Entering or importing each transaction and assigning it a category
- Reconciling each account month by month, so the ending balance in the books matches the statement
- Recording loans, asset purchases, owner contributions and owner draws correctly
- Matching customer payments to invoices and vendor payments to bills, if you track those
- Fixing payroll, sales tax or inventory records where they apply
- Producing year-end reports for your tax preparer
A bookkeeping cleanup is the cousin: the books exist but are wrong, with duplicate entries, transactions in the wrong category or accounts that never reconciled. Many businesses need some of both.
Do I need a full catch-up, or just organized expenses for my CPA?
It depends on how your business is set up. This table is a starting point for the conversation with your CPA, not a rule:
| Your situation | What you likely need |
|---|---|
| Employees and payroll | Full catch-up. Payroll filings and wage records have to tie out. |
| Inventory or cost of goods sold | Full catch-up. Inventory has to be counted and valued. |
| Business loans, financed equipment or large asset purchases | Full catch-up, so principal, interest and depreciation are recorded properly |
| More than one entity, or a partnership or S corporation | Full catch-up. These returns usually need balance-sheet information. |
| Accrual-basis books, or a lender or investor who wants financial statements | Full catch-up |
| Sales tax collected | At least a cleanup of sales and sales-tax records |
| Sole proprietor or single-member LLC on Schedule C, cash basis, a few accounts, no payroll or inventory | Often an organized expense picture: complete statements, income forms, and documented business expenses |
For that last group, ask your CPA directly: "Do you need reconciled books from me, or complete statements and an expense list with receipts?" Some preparers want a ledger from every client; others prefer to work from statements. Either answer saves you money or time.
Why do statements alone fall short?
Because a statement proves you paid, not what you paid for. IRS Publication 583 says proof of payment "by itself, does not establish you are entitled to a tax deduction" and that you should also keep documents such as sales slips and invoices. Whatever route you take, the expensive part of catching up is the same: attaching a document and a business reason to each expense that matters. See how to organize receipts for taxes for a simple system.
What's a realistic catch-up plan before the 2027 deadlines?
Work backward from the dates. For tax year 2026 (returns filed in 2027), the dates below come from the 2026 Form 1040-ES and the rules in IRS Publication 509:
| When | What to do |
|---|---|
| Now through November 2026 | List every business account and card. Download statements for January through the latest month. Ask your CPA whether they need books or an organized expense list. |
| December 2026 | Categorize transactions, find receipts for travel, meals, gifts and larger purchases, and note the business purpose. Decide on help (bookkeeper or self-serve) now, before firms fill up. |
| Fri Jan 15, 2027 | Fourth-quarter 2026 estimated tax payment due. The Form 1040-ES says you can skip it if you file your 2026 return by Feb 1, 2027 and pay the full balance. |
| Mon Feb 1, 2027 | Form 1099-NEC due for contractors you paid. For payments made after December 31, 2025, the threshold is $2,000 (it was $600). |
| Mon Mar 15, 2027 | Partnership (Form 1065) and S corporation (Form 1120-S) returns due |
| Thu Apr 15, 2027 | Individual returns (Form 1040 with Schedule C) due, and any tax owed is due, extension or not |
| Fri Oct 15, 2027 | Extended deadline for individuals who filed Form 4868 |
About that extension: the IRS says plainly that "the extension is only for filing your return." If you expect to owe, estimate it and pay by April 15, 2027.
Example: a freelance photographer realizes in December that she hasn't touched her books since March. She has one business checking account, one credit card and no employees. Her CPA tells her they don't need a ledger, just all twelve months of statements, her 1099s, and receipts plus a one-line purpose for each trip, meal and equipment purchase. She spends three weekends on that instead of buying a full catch-up engagement. A colleague with two part-time employees and a camera-equipment loan gets the opposite answer and hires a bookkeeper.
What should I hand my CPA when I'm caught up?
At minimum: statements for every business account for the full year, all 1099s and other income records, records of estimated payments, and your list of business expenses with documents attached or labeled. Our small business tax prep checklist has the full list, and Schedule C expense categories shows how expenses are grouped on the return.
Keep the records afterward. The IRS general rule is three years, longer in some situations.
How do I avoid being behind again next year?
Pick one hour a month. Download each statement, mark the business charges, save the receipt or invoice for every business purchase (for travel, meals and gifts Publication 463 lets you skip the receipt under $75, but never for a hotel stay), and write the purpose next to trips and meals. Twelve small sessions are usually easier to fit in than one catch-up project.
Where Amy fits
Amy isn't a bookkeeper, and she doesn't need your books to be current. Send her the bank and card statements you already have, and she finds the likely business expenses in them and tells you what's still missing. Your CPA sees where every number came from.
