# Bank Statement Audit: Footing, Continuity and Vouching

- Author: PreciseBankFlow (https://precisebankflow.com)
- Published: 2026-10-16
- Category: Bank statements in an audit
- Canonical: https://precisebankflow.com/blog/bank-statement-audit-footing-continuity

> A bank statement audit in practice: foot each statement, check balance continuity between periods, vouch extracted lines and handle a statement that won't foot.
A bank statement audit tests the statements themselves before you rely on them. Foot each one so the opening balance plus activity equals the printed closing balance, check that every closing balance carries into the next opening balance, and vouch extracted lines to the PDF. A statement that fails is reported, not adjusted.

## Footing each bank statement: opening plus activity equals closing

Footing a bank statement means adding up its figures to prove they agree. The first arithmetic test is that the opening balance, plus all deposits and credits, minus all withdrawals and debits, equals the closing balance the bank printed. It takes minutes and catches dropped lines, misread digits and altered totals.

### Foot twice: the summary and the lines

Do the arithmetic two ways, because a statement has two sets of totals. The summary box near the top gives total deposits and total withdrawals. The line detail below it holds the individual transactions. Foot the summary first, then add the lines yourself and compare the sums with the summary.

The two can disagree while the first test still passes. A summary that foots proves only that the bank's summary is consistent with itself. If the lines add to a different total than the summary shows, one of the two is wrong, and the difference is a number you can hunt for.

### What a pass does and does not prove

A pass shows the statement is arithmetically consistent. It does not show the statement is genuine, that every line is correct, or that the account was reconciled. A forger can make figures foot. Footing is a first screen, and the later tests in this post carry the rest of the weight.

## Bank statement continuity: does each closing balance carry forward?

Bank statement continuity is the test that each period's closing balance equals the next period's opening balance. The statements form a chain, and a break in the chain means a statement is missing, altered, or covers a different account. Run it across the whole audit period, not one month at a time.

Set the statements out in a table with one row each. The example below uses three months of a fictional account, with one break flagged and traced.

| Statement | Opening | Deposits | Withdrawals | Closing (printed) | Opening of next | Break |
| --- | --- | --- | --- | --- | --- | --- |
| January | 14,200.00 | 31,450.00 | 28,310.50 | 17,339.50 | 17,339.50 | None |
| February | 17,339.50 | 29,800.00 | 30,125.25 | 17,014.25 | 16,514.25 | 500.00 |
| March | 16,514.25 | 33,100.00 | 27,640.00 | 21,974.25 | | |

Example values. January foots and carries forward. February foots on its summary figures, but its closing balance is 500.00 higher than March's opening balance.

### Tracing the break to a line

The break is 500.00, so look for a line of exactly that amount. On the February statement, the line detail ends with a 02/28 debit of 500.00 labelled "Returned item chargeback". The line detail adds to withdrawals of 30,625.25, not the 30,125.25 the summary box shows. Footing from the lines gives 17,339.50 plus 29,800.00 less 30,625.25, which is 16,514.25, exactly March's opening balance.

So the lines and the next month agree with each other, and the February summary box and printed closing do not. That points at the February summary, not at March. This is a lead, not a conclusion. The bank's own copy would show whether the summary was printed that way or changed.

### Keep the chain across the whole period

Check the opening of the first statement against the prior audit's closing and the last closing against the year-end balance in the reconciliation. If a month is absent, the chain cannot close, so ask for it before concluding. A missing statement is a gap in evidence, never a zero month.

### Statements that do not line up with calendar months

Not every account cuts off on the last day of the month. Some banks close a cycle on the fifteenth, and a few issue statements of unequal length. The continuity test is unchanged, since it compares one closing balance with the next opening balance, but the dates need care. Check that the period end of one statement is the day before the period start of the next. A one-day overlap or a one-day hole is a sign that a transaction may be counted twice or not at all.

## Vouching extracted bank statement lines to the PDF

Vouching means taking a figure from your working data and tracing it back to the source document. When the lines were extracted from a PDF, vouching shows the extraction matches what the bank printed. You cannot vouch every line on a busy account, so choose the lines most likely to be wrong or most material.

### Which lines to check

Pick lines with these traits first:

1. **Low confidence.** Where the tool scores a field, check the weakest scores first. PreciseBankFlow gives every extracted field a confidence score for this reason.
2. **Large amounts.** A misread digit matters most on the biggest items.
3. **Lines near a period boundary.** Dates at the start and end of a statement can slip into the wrong month.
4. **Lines tied to a footing difference.** If the totals disagree, check first any line whose amount equals the difference or half of it.
5. **A random sample of the rest**, so the untargeted lines also get some coverage.

For each chosen line, check the date, the amount and its direction, the check number if present, and the description. Mark the line vouched with the tickmark from your legend. Record the number of lines checked and the number of exceptions, so a reviewer can judge the sample.

## What should a bank statement audit do with a statement that doesn't foot?

A statement that doesn't foot should be reported as out of balance, with the difference shown and the cause traced where possible. Never adjust a line, a balance or a total to make it agree. The difference is evidence, and forcing it to zero destroys the evidence and may hide an error or a fraud.

### Report, don't adjust

Write down the statement, the period, the computed closing balance, the printed closing balance and the difference. Then look for a line equal to the difference, a line equal to half of it, which suggests a debit entered as a credit, and a page that is missing or duplicated. PreciseBankFlow handles it this way too: an out-of-balance statement stays marked and unadjusted, and the report shows the difference and the line that matches it, if one exists.

### What to do next

Ask the client for the statement again, and if the difference remains, request the bank's copy. Raise an exception with the evidence attached. Keep the reconciliation open until the item is resolved, or note it as a limitation if it cannot be. If you suspect tampering, the post on [how to tell an altered statement from a genuine one](/blog/how-to-detect-fake-bank-statements#pdf-metadata-fonts-and-edits-in-altered-bank-statements) covers the signs in the file itself.

## Bank statement audit on scanned copies: confidence and legibility

Scanned copies change a bank statement audit because every character has been read from an image, not copied from the bank's file. Scan quality sets how far you can trust the extracted figures. Footing is more valuable here, since a misread digit usually breaks the arithmetic and shows itself.

### How quality changes the work

On a clean, straight scan, treat the work like a digital PDF but vouch a larger share of lines. On a poor scan, with blur, skew, shadow or handwriting, raise the share further and confirm the opening and closing balances by eye first. Digits that can be confused, such as 3 and 8 or 1 and 7, deserve a second look, especially in the amount column.

### Legibility is a finding

If a page is too faint to read with confidence, say so on the workpaper. Do not guess at an amount. Ask for a better copy, and if none exists, record that the line could not be vouched. Footing the page can still help: if the rest of the page foots to its subtotal, the unreadable figure can be worked out from the difference, but treat that result as a lead and never as evidence.

## When the bank statement audit needs the bank's copy, not the client's

The audit needs the bank's copy when the client's version cannot be trusted or cannot be completed. A statement obtained straight from the bank, by confirmation or an online download you control, is better evidence than a file the client sends. Move to it whenever a risk or a failure makes the client's file doubtful.

### Triggers to stop relying on client documents

Ask the bank directly when any of these occurs:

- A statement does not foot and the client cannot explain the difference.
- The continuity chain breaks and the missing or conflicting statement is not supplied.
- Fonts, spacing or metadata look inconsistent within the file.
- The client's reconciliation shows large, round or old items that the statement does not support.
- The account is high risk, or the engagement has a fraud concern around cash.

### Duplicates and gaps come next

Once the statements are sound, the next test is on the lines. [Duplicate charges and missing check numbers](/blog/finding-duplicate-transactions-on-bank-statement-lines#same-payee-same-amount-close-dates-duplicate-transaction-rules) can be tested with a few rules, and the findings go into the exception list described in the [reconciliation report sample for workpapers](/blog/reconciliation-report-sample). To run the footing and continuity tests on your own statements, [PreciseBankFlow](/get-started) is opening to audit firms in small groups.