Bank Reconciliation: A Small Business Guide
By Diane Jones, Certified QuickBooks ProAdvisor, 30+ years of bookkeepingUpdated August 2026
Bank reconciliation means comparing your books to the actual bank and credit card statements, line by line, until the two agree. It’s the most useful habit in small business bookkeeping. It’s also the first thing I check when a new QuickBooks file lands on my desk.
Why reconciliations matter
Skip them and duplicate transactions, missing deposits, uncleared transfers, old checks, and bank feed mistakes all sit there unnoticed. Your reports can look current and still be wrong underneath. That’s worse than knowing you’re behind.
What a reconciliation usually catches
- Duplicate entries, often from a bank feed match that went sideways
- Transactions that never made it into the books
- Items posted to the wrong account
- Checks and payments that never cleared
- Transfers recorded on only one side
It also gives you one point every month where a strange balance gets questioned before it turns into an expensive problem.
A simple reconciliation workflow
- Start with the ending balance on the statement.
- Match cleared activity one line at a time.
- Investigate anything missing, duplicated, or unmatched.
- Confirm the difference is zero before you finish.
Take the time it takes. A reconciliation that’s off by a little is still off.
Mistakes I see most often
The biggest one is forcing a reconciliation to balance with an adjusting entry before you know where the difference came from. That buries the problem instead of fixing it. Skipping several months and hoping the gap stays small is a close second. It never stays small.
Owners also treat the bank feed like it’s a review. It isn’t. The feed saves real time, and somebody still has to look at every match.
What clean reconciliations buy you
Once the accounts reconcile every month, your Profit and Loss and Balance Sheet turn into reports you can act on. The cash balance matches the bank. You can answer a question in ten minutes instead of an afternoon. At year-end your CPA gets a file to work from.
Reconciling every account, every month, is a core part of my monthly bookkeeping service. That’s why the reports I send by mid-month tie to the statements.
Want your balances to finally tie to the statement?
If QuickBooks and your bank disagree, I’ll find where the difference started and set up a routine that keeps them together, and the first call to talk it over is free.
Set up my free callFrom a Google review
Accurate, detailed and personable; three of many qualities that Diane brings to the table every single day. There is no one I would trust more than Diane with my bookkeeping.
Diane is very competent and dependable. She has been working in the bookkeeping, finance, and records area for many years and does great work. Her services are recommended.
I’m a bookkeeper, not a tax preparer or attorney. For tax and legal questions, confirm the details with your CPA. I keep the books that make their job easier.
A Form 990 on extension is due November 16, 2026. Your CPA needs reconciled, fund-level books to finish it, and that’s the part I do.
Filed an extension for 2025? Those returns are due October 15, 2026. Your CPA needs a reconciled 2025 file before then, and the sooner I see it the more room we both have.
1099s for your subs and vendors are due February 1, 2027, and they’re built from a full year of entered payments. If 2026 is behind, the last weeks of the year are the time to catch it up.
1099s for your subs and vendors are due February 1, 2027, the same day your payroll provider sends W-2s. If the 2026 books aren’t entered yet, that’s the first thing I’d fix.
S corporation and partnership returns are due March 15, 2027. Your CPA needs a reconciled 2026 file to file on time.
Individual returns are due April 15, 2027. A reconciled 2026 file is what your CPA needs to file, or to file the extension with real numbers.