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Learning how to reconcile bank statements comes down to one repeatable process. By the end of this guide, your bank statement and your books will agree to the penny, and every difference between them will have an explanation. Before you start, have three things ready: the bank statement for the period, access to your accounting records (software or a spreadsheet), and last month's reconciliation if you have one. The steps below treat the two sides separately, because timing differences on the bank side and missing entries on the book side are handled in different ways, and mixing them up is where most beginners get stuck.
Step 1: Gather Your Statement and Your Books for the Same Period
Reconciliation means comparing your records to the bank's records so that every difference between them is explained. That only works if both sides cover the same window, so start by confirming dates. Download the statement as a PDF or online export, then pull the general ledger cash account (the running record of every transaction posted to that bank account) or your transaction register for the exact same start and end dates. A statement that runs from the 3rd to the 2nd will not line up with books filtered by calendar month.
Next, check the opening balance on this statement against the closing balance of last month's reconciliation. They should be identical. If they are not, stop and fix that first. An unresolved error from a prior period carries forward and will show up as a mystery difference every month after.
Then collect the supporting documents you may need when a line item raises questions:
- Deposit slips and card processor payout reports
- Sales invoices and customer payment records
- Vendor bills, receipts, and check stubs
- Last period's list of outstanding checks and deposits in transit
If your books are new and no prior reconciliation exists, use the account's starting balance as your opening figure and confirm it against the first statement you have. Having everything on the desk before you begin saves you from stopping halfway to hunt for a receipt. If your records are scattered, it may help to fix disorganized business records before you start.
Step 2: Compare Deposits and Other Money In
Work through the deposits on the statement one at a time and find the matching deposit in your books. Mark both sides as you go, with a tick in a spreadsheet or the checkbox in your software. Anything left unmarked at the end is a difference you will need to explain.
Match on amount and approximate date, but expect some deposits not to look the way you recorded them. Card processors are the usual example. A processor typically pays out several days of sales in one deposit, net of its fees. Suppose you recorded five sales totaling $2,000, and the bank shows a single deposit of $1,942. The $58 gap is the processor's fee, and you match the deposit to the net amount, then record the fee separately in Step 4.
Two kinds of leftovers will appear:
- Deposits in transit: money you recorded in your books that has not yet shown up on the statement. These are usually deposits made in the last days of the period, and they will appear on next month's statement. List each one with its date and amount.
- Deposits on the statement but not in your books: interest earned, transfers from another account, or customer ACH payments (electronic transfers through the Automated Clearing House network) that you never recorded. Note each one for entry in Step 4.
Keep these two lists separate. Deposits in transit are timing items on the bank side and need no new entry in your books. Unrecorded deposits are gaps in your books and do need an entry. A deposit in transit that is still missing from the next statement is worth chasing, since it could mean the deposit was never made or was recorded in error. Tracking customer payments carefully also supports managing accounts receivable more effectively.
Step 3: Compare Checks, Payments, and Other Money Out
Repeat the matching process for everything that left the account: checks, debit card charges, ACH payments, wires, and withdrawals. For each one, confirm both the amount and the date against your records, and mark both sides.
Checks you wrote and recorded that the payee has not yet cashed are outstanding checks. List each by check number, date, payee, and amount. Like deposits in transit, they are timing items: your books are correct, and the bank will catch up when the check clears. Review last month's outstanding list too, and mark off any that cleared this period. A check that has been outstanding for several months deserves a call to the payee.
While matching, look for the mistakes people make in their own records:
- Duplicates: the same bill or payment entered twice.
- Transposed digits: a $540 payment recorded as $450, for example.
- Wrong amounts: a payment recorded at the invoice total when a discount or partial payment was actually made.
- Wrong dates: a payment recorded in one period that the bank posted in another.
Finally, identify items on the statement that are not in your books at all. Common ones are software subscriptions, insurance or loan auto-debits, and returned items. List them for Step 4, but do not record anything yet. If a charge is unfamiliar, treat it as a question to answer rather than an entry to make. If this keeps happening, you may be unable to track business expenses properly, which is worth fixing at the source.
Step 4: Record Bank Fees, Interest, and Other Missing Entries
Now enter the transactions the bank recorded that your books do not have. These are the items you listed in the previous two steps:
- Monthly service fees and wire fees
- Interest earned
- Card processor fees from netted deposits
- NSF charges (NSF means "non-sufficient funds"), including the reversal of a customer deposit that bounced
- Unrecorded ACH receipts, transfers, and auto-debits
Post each one to an account that describes what it is. Fees belong in bank fees expense, interest in interest income, and a bounced customer payment should reinstate the receivable so you know the customer still owes you. Avoid parking things in a miscellaneous or uncategorized account. A catch-all hides the very errors reconciliation is meant to surface. A well-organized chart of accounts template makes it easier to categorize these entries correctly.
Confirm what a transaction is before recording it. If a charge is unfamiliar, check the vendor name against your records, ask whoever has card access, and look at the payee detail in online banking. If it could be fraud, contact the bank promptly rather than booking it as an expense. Banks set their own deadlines for reporting unauthorized activity, so check your account agreement or ask the bank directly.
Notice what these entries do: they change your book balance. Deposits in transit and outstanding checks do not, because those items are already in your books. Keeping that distinction clear is what makes the next step straightforward. Some software can import bank feed transactions and suggest matches, but as of 2026 the features vary by product and plan, so review every suggested match rather than accepting them in bulk.
Step 5: Calculate the Adjusted Balances
You now have the pieces to prove the reconciliation. Calculate an adjusted balance for each side, and the two should land on the same number. A common misconception is that the statement balance should equal the book balance with no adjustment. It rarely does, because the bank and your books see transactions at different times.
Bank side: statement ending balance + deposits in transit − outstanding checks = adjusted bank balance.
Book side: book balance + interest and other credits you had not recorded − fees and other charges you had not recorded ± corrections to errors = adjusted book balance.
Here is an illustration using made-up round numbers. Suppose the statement ends at $12,400. You have one deposit in transit of $1,500 and two outstanding checks totaling $900.
- Bank side: $12,400 + $1,500 − $900 = $13,000
Your books show $13,070 before adjustments. The bank charged a $40 service fee and a $50 NSF charge you had not recorded, and paid $20 of interest you had not recorded.
- Book side: $13,070 + $20 − $40 − $50 = $13,000
Both sides equal $13,000, so the account is reconciled. That equality is the pass/fail test for the whole process. If the figures match, every difference is explained. If they do not, the gap is an error somewhere, and you move to Step 6.
Do not post the bank-side adjustments (deposits in transit and outstanding checks) to your books. They exist only on the reconciliation report and will resolve on their own when the bank processes them. Understanding how these balances feed into your cash flow statement shows why an accurate cash balance matters.
Step 6: Investigate and Fix Any Remaining Difference
If the adjusted balances do not match, subtract one from the other to get the gap, then use its size to narrow the search.
- Divisible by 9: suspect a transposition. A $540 entry recorded as $450 produces a $90 gap, which divides evenly by 9. This is a standard accounting heuristic, not a guarantee, but it is a quick test.
- Equal to a single transaction: look for one item that was missed, entered twice, or left unmarked.
- Exactly double a transaction: suspect a sign error, such as a deposit entered as a payment. The error moves the balance twice, once for each direction.
If the gap gives no clues, work through the usual culprits in order:
- Confirm the statement dates and opening balance match your books' period.
- Look for a bank fee or interest credit you overlooked.
- Check for a check or deposit recorded twice.
- Check whether a transaction was recorded in one period but posted by the bank in another.
- Re-add your outstanding checks and deposits in transit, since arithmetic slips are common.
When you find an error in your books, fix it with a proper correcting entry or by editing the original transaction. Never plug the difference into a miscellaneous account to force a match, even when the amount is small. A plug hides the error, and small errors tend to compound or mask larger ones. Bank errors do happen, but reconciliation also catches your own mistakes, which are far more common. Recurring discrepancies are often a sign of broader inaccurate financial reporting issues that deserve a closer look.
If you have been through the list and still cannot resolve the gap, document what you checked and the remaining amount, then ask your bookkeeper or CPA to take a look. A written note beats a silent plug.
Step 7: Finalize, Document, and Build a Routine
Once the balances match, produce the reconciliation report. Accounting software can generate one, showing the statement balance, outstanding items, and adjusted balances. In a spreadsheet, save a clean summary with the same details. Date it, sign it if your process calls for sign-off, and file it with the bank statement so the two travel together. Record-retention requirements vary by document type and jurisdiction, so confirm with a CPA how long you need to keep these.
If your software allows it, lock the period. This prevents someone from editing or deleting a past transaction by accident and silently breaking a reconciliation you already completed. Features and settings differ between products as of 2026, so check how yours handles closed periods.
Then build the habit:
- Frequency: reconcile at least monthly. Accounts with many daily transactions benefit from weekly or even more frequent checks, since errors are easier to trace while they are fresh.
- Every account: repeat the process for credit cards, savings accounts, and payment processor balances, not just the main checking account.
- Separation of duties: where you can, have someone other than the person who records transactions review the reconciliation. In a very small business, that might be the owner reviewing the bookkeeper's report and checking the statement directly.
Reconciliation is not only a way to catch bank errors. It is your main check on your own records, and a reviewer who did not enter the transactions is more likely to notice what looks wrong. Making it part of a consistent routine is a core piece of managing business finances effectively.
Carrying Outstanding Items Into Next Month
With the adjusted balances matching, this month is done. Outstanding checks and deposits in transit carry forward to next month's reconciliation, where you will mark them off as they clear. Starting the next period with last month's closing balance as your opening figure keeps the chain unbroken. A consistent monthly routine catches data entry mistakes, duplicate payments, and unauthorized charges while they are still easy to trace and correct.
If a discrepancy persists after you have worked through Step 6, or your account volume has outgrown a manual process, a qualified accountant can find the cause and set up a workflow that holds up.
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