GUIDE · FINANCIAL STATEMENT REVIEW
To make sure financial statements are accurate, prove every balance against something outside the books: bank and card statements, the receivables and payables aging, payroll reports and lender statements. Then confirm nothing sits in uncategorized or suspense and that retained earnings roll forward from last year. ZeraBooks AI bookkeeping runs the bank and card proof on every upload.
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DEFINITION
A profit and loss, balance sheet and cash flow where every balance agrees with an outside source (a bank, a lender, a payroll provider, a customer’s unpaid invoice) and every transaction sits in the account it belongs to. A balance sheet that balances isn’t proof; double entry makes it balance even when entries are wrong.
THE CHECKS
Each check compares a balance in the books with something the books didn’t produce. Run them in this order, because a cash error throws off almost everything after it.
| Check | Compare | It should be |
|---|---|---|
| 1. Cash and cards reconciled | Each account’s ledger balance with the closing balance on its statement, for every month | Equal, every account, every month |
| 2. Nothing left unsorted | Uncategorized income, uncategorized expense, suspense and Ask My Accountant | 0.00 |
| 3. Receivables tie | The A/R aging total with Accounts Receivable on the balance sheet | Equal |
| 4. Payables tie | The A/P aging total with Accounts Payable | Equal |
| 5. Payroll liabilities match | Payroll tax and withholding balances with your payroll provider’s liability report | Equal, and only what is still owed |
| 6. Loans match the lender | Each loan balance with the lender’s statement on the same date | Equal |
| 7. Retained earnings roll forward | Last year’s closing retained earnings + last year’s net income − distributions, with this year’s opening figure | Equal |
Then read the profit and loss month by month. A category that is zero one month and triple the next, rent missing in March, or gross margin that jumps ten points usually points to a misfiled line that all seven checks can miss, because a wrong category doesn’t change any balance.
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WORKED EXAMPLE
Fernhill Physio is a fictional clinic. Its statements to September 30, 2026 show net income of 61,480.00 for the year so far. Here are the seven checks:
| Check | In the books | Outside source | Difference |
|---|---|---|---|
| Checking and Visa | Tie to September statements | Bank and card statements | 0.00 |
| Uncategorized and suspense | 0.00 | 0.00 | |
| Accounts receivable | 15,350.00 | A/R aging 14,600.00 | 750.00 |
| Accounts payable | 3,980.00 | A/P aging 3,980.00 | 0.00 |
| Payroll liabilities | 2,184.60 | Payroll provider report 2,184.60 | 0.00 |
| Equipment loan | 38,100.00 | Lender statement 39,340.00 | 1,240.00 |
| Retained earnings, Jan 1 | 52,300.00 | 34,100.00 + 18,200.00 − 0.00 = 52,300.00 | 0.00 |
Two checks fail. Receivables are 750.00 higher than the open invoices because someone posted a manual journal for a session that was already invoiced as INV-2219, so the revenue was counted twice. The loan is 1,240.00 lower on the books than at the lender because six 1,150.00 payments were all booked as principal: 45,000.00 − 6,900.00 = 38,100.00, while the lender applied 1,240.00 of that to interest and shows 45,000.00 − 5,660.00 = 39,340.00.
THE FIXES
Both errors made the clinic look more profitable than it was. Each fix is one journal entry dated September 30, 2026:
| Error | Debit | Credit | Amount |
|---|---|---|---|
| Duplicate revenue journal | Revenue | Accounts receivable | 750.00 |
| Loan interest booked as principal | Interest expense | Loan payable | 1,240.00 |
| Net income after review | 61,480.00 − 750.00 − 1,240.00 | 59,490.00 |
After the fixes, receivables are 15,350.00 − 750.00 = 14,600.00, the same as the aging, and the loan is 38,100.00 + 1,240.00 = 39,340.00, the same as the lender. Net income drops by 1,990.00, about 3.2%. That is the size of error that changes a tax estimate or a loan covenant, and nothing on the balance sheet looked wrong before the checks. For the loan entries going forward, see how to record loan payments.
STEP BY STEP
Set aside an hour at month end, or a day at year end. Keep the outside documents open next to the reports.
Bank and card statements for every month, the lender’s latest statement for each loan, your payroll provider’s liability report, and last year’s final balance sheet and profit and loss.
Reconcile every bank and card account to its statement. Until cash ties, every other difference could be a cash error in disguise.
Move every line out of uncategorized, suspense and Ask My Accountant. A balance there means income or expenses are missing from the profit and loss.
Run the A/R and A/P aging on the statement date and compare each total with the balance sheet. A gap usually means a journal posted straight to the account.
Payroll liabilities to the payroll report, each loan to the lender statement, sales tax payable to the return you are about to file.
Last year’s closing retained earnings plus last year’s net income, minus distributions, must equal this year’s opening figure. If not, something was posted into a closed year.
Look for missing recurring costs, one-off spikes and swings in gross margin. Click into anything odd and look at the transactions behind it.
WARNING SIGNS
A negative cash account with no overdraft, negative receivables, or a credit balance in an expense category usually means a duplicate or a reversed entry.
If a loan balance drops by the full payment every month, the interest is missing from expenses. Fernhill’s error.
Equity should change with profit, contributions and draws. Anything else needs an explanation.
Over a quarter, cash sales plus collected invoices should roughly equal deposits that aren’t loans, transfers or owner money.
A prior year’s figures that differ from the return already filed mean someone posted into a closed period. The balance sheet reconciliation guide covers how to support each balance properly.
WITH ZERABOOKS
ZeraBooks doesn’t run payroll or see your lender’s statement unless you upload it, so checks 5 and 6 still start with a document from outside. The rest are built in.
CHECK 1
Each bank and card statement is reconciled as it lands: the statement must add up, its opening balance must meet the previous closing balance, and the ledger must agree with the printed closing balance. A month that ties can be finalized; one that doesn’t can’t. Every statement is checked against its printed opening and closing balance, to the cent. One that doesn’t tie is flagged for review.
How reconciliation worksCHECKS 3 AND 4
Under the A/R and A/P aging, ZeraBooks adds the age buckets, unapplied money and any journal entries posted straight to the account, and compares the total with the ledger balance on the same date. A journal like Fernhill’s 750.00 shows on its own Journal line instead of hiding inside the total. The full close is on the month-end close checklist.
A/R and A/P agingCHECK 6, HALF DONE
When loan payments were booked entirely to principal, Autopilot asks for the interest rate and then moves each month’s interest, balance owed times rate divided by 12, to Interest Expense. It never uses a guessed rate. At year end, the review card warns when a loan received 6 or more payments with no interest recorded. You still compare the balance with the lender’s statement, since lenders round and charge fees.
Month-end entriesNo. Double entry makes assets equal liabilities plus equity even when an entry is in the wrong account or recorded twice. Fernhill’s balance sheet balanced with both errors in it. Accuracy comes from matching balances to outside documents.
Reconcile cash and cards every month, and run all seven checks at least quarterly and before you send statements to a lender, investor or tax preparer. At year end, run them before the books are closed and the return is filed.
Three come up again and again: loan payments booked entirely to principal, transfers between your own accounts recorded as income or expense, and transactions left in uncategorized. All three distort profit while the balance sheet still balances.
Something posted to Accounts Receivable without an invoice or payment, usually a manual journal entry or a deposit coded straight to the account. Find entries on that account that don’t come from an invoice, credit or payment, and reverse or reclassify them.
Take last year’s closing retained earnings, add last year’s net income and subtract any distributions or dividends. The result should equal retained earnings at the start of this year. If it doesn’t, a prior year was changed after it closed.
ZeraBooks proves bank and card months on upload, shows how the aging ties to the ledger and splits loan interest once you give it the rate. Want a person to keep the books and run the checks? Our bookkeeping services team does it from $150 a month (USD).
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ZeraBooks reconciles each bank and card month to its printed balances as soon as it lands. 7-day trial, then $79 a month billed annually; see ZeraBooks pricing.
Last updated October 22, 2026 · Written by Damin Mutti, founder of ZeraBooks