What bank reconciliation is and why you do it
Bank reconciliation is the process of comparing your own records of money in and out of your account against what your bank says happened. You are checking that the two match. Most of the time they do not match exactly, because of timing — you wrote a check last week, but the bank has not processed it yet. Reconciliation finds those timing gaps and confirms that everything that should have cleared has cleared.
You do this because mistakes happen on both sides. Your bank might process a deposit twice by accident. You might have forgotten to write down a withdrawal. A reconciliation catches these problems before they grow into bigger ones. If your records say you have $500 but the bank says $300, you need to know which one is wrong before you spend money you do not actually have.
Most people reconcile once a month, when their bank statement arrives. Some do it more often. The process takes 15 to 45 minutes depending on how many transactions you have and how organized your records are.
Key Takeaways
- Start with your bank statement balance and your own records balance, then list everything that appears in one but not the other.
- Checks and transfers you initiated take several days to clear, so they will show in your records before they show on the bank statement.
- Deposits and fees sometimes appear on the bank statement before you recorded them, so you may need to add them to your records.
- When the two sides match after accounting for timing, your reconciliation is complete and you know your balance is accurate.
Gather your statement and your records
Get your most recent bank statement — the one your bank mailed you or the one you can read from your online banking portal. You will also need your own record of transactions. This might be a checkbook register (the small book that comes with checks), a spreadsheet you keep, or notes in a notebook. Whatever form it takes, it should show every deposit and withdrawal you made during the statement period.
Set them side by side. The bank statement will show a starting balance (what was in the account at the beginning of the month) and an ending balance (what is in the account now). Your records should show the same starting balance. If they do not, go back to your previous reconciliation and start from there instead.
List transactions that are in your records but not yet on the statement
These are usually checks you wrote or transfers you sent out that have not cleared yet. Go through your records and find every transaction from the last week or so of the statement period that does not appear on the bank statement. Write down the date, the amount, and what it was for. These are called outstanding items.
Deposits work differently — if you deposited money near the end of the month, it might not show on the statement yet either. List those separately, because you will add them back in a different step. The key is: if you recorded it but the bank has not posted it, write it down now.
Add up all the outstanding checks and transfers. You will use this number in a moment.
List transactions that are on the statement but not in your records
Go through the bank statement line by line and mark off each transaction as you find it in your records. Anything on the statement that you did not mark off is something you missed. This might be a fee the bank charged, an automatic payment you forgot about, or a deposit that posted but you did not record.
Write down each one with the date and amount. These are transactions you need to add to your records. Some of them (like bank fees) you may not have known about until now. Others you straightforward forgot to write down.
Do the math to make the two sides match
Start with your bank statement ending balance. This is the number the bank says you have right now.
Add back any deposits you recorded but the bank has not posted yet. Subtract any checks or transfers you recorded but the bank has not cleared yet. The result should equal the balance shown in your own records.
If it does, you are done — your reconciliation is complete. If it does not, there is a discrepancy. Go back and check your arithmetic, and make sure you did not miss any transactions on either side.
Here is what this looks like in numbers:
| Bank statement ending balance | $1,200 |
| Plus: Deposits you recorded but bank has not posted | + $300 |
| Minus: Checks/transfers you recorded but bank has not cleared | − $150 |
| Should equal your records balance | $1,350 |
Update your records with anything you missed
Now add to your records any transactions that appeared on the bank statement but you did not know about. Bank fees are the most common. Write them down with the date and amount, and subtract them from your balance. If there was a deposit you forgot to record, add it.
After you add these, your records balance should match the bank statement balance exactly. If it still does not, check your addition and subtraction. A common mistake is adding when you should subtract, or vice versa.
What to do if the numbers do not match
If after all this the two sides still do not match, start by checking your arithmetic. Use a calculator and go through every number again. Then check that you listed every transaction on both the statement and in your records — it is straightforward to miss one, especially if you have many transactions.
If you still cannot find the problem, look at the difference between the two balances. If it is an amount that matches one of your transactions, you may have recorded that transaction twice, or not at all. If the difference is an amount that matches a bank fee or deposit, you may have missed that on one side.
If you have checked everything and still cannot find it, call your bank. Bring your statement and your records with you. The bank can look at the actual transaction details and help you find where the mismatch is. Do not assume your records are wrong — banks do make mistakes, though not often.
Frequently Asked Questions
How long should I wait before I assume a check has not cleared?
Most checks clear within three to five business days. If a check is more than a week old and still does not appear on your statement, call the bank. It may have been lost or processed incorrectly. If you are waiting for a deposit, the same timeline applies — after a week, contact whoever sent you the money to confirm they sent it to the right account.
What if I find a transaction on my statement that I did not make?
Write down the date, amount, and description. Call your bank right away and tell them about it. They will investigate and can reverse the charge if it was fraudulent or an error. Do not wait — banks have time limits for disputing transactions, usually 60 days from when the statement was issued.
Do I have to reconcile every month?
You do not have to, but it is the best way to catch problems early. Many people reconcile when their statement arrives. If you check your account online frequently and trust your record-keeping, you might reconcile less often. But at least once or twice a year is a good idea to make sure nothing has slipped through.
What if I never wrote down a transaction?
Add it to your records now, with the date and amount from the bank statement. This is why reconciliation is useful — it forces you to look at everything your bank processed, not just what you remember. Going forward, try to record transactions as you make them, or check your account online regularly so you do not forget.
Can I reconcile using my phone banking app instead of a paper statement?
Yes. Pull up your transaction history in the app and compare it to your records the same way you would with a paper statement. Some banking apps have a built-in reconciliation tool that does some of the math for you. The process is the same — you are still matching what you recorded against what the bank processed.