Your Accounts Reconcile. Your Profit and Loss Still Looks Wrong. Here's Why

TL;DR: Reconciliation checks that your cash is right. It says nothing about whether your categories are right. When the bank matches and the profit and loss still looks wrong, run six checks: revenue against customer deposits, the uncategorized bucket, transfers on the profit and loss, owner money in expenses, big purchases that should be assets, and inconsistent categories for the same vendor. Prosper keeps the evidence beside every decision so classification can be reviewed, not just balances. TidyMonth's bookkeeper reviews the close, not only the reconciliation.

You reconcile every month. The checking balance matches. The card balance matches. And your profit and loss report says revenue was $140,000, when you know clients paid you something closer to $118,000. Something is off, and the reconciliation didn't catch it.

Both things can be true. The reconciliation can be perfect and the profit and loss can be nonsense. They're measuring different things.

What reconciliation actually proves

Reconciling an account means matching your books against the bank statement until the balances agree. When they agree, you've established that every transaction the bank saw is in your books exactly once, and nothing is in your books that the bank didn't see.

That's a real and important check. It catches missing transactions and duplicates. It's the step most owners skip, and the step that catches the most mechanical errors.

But reconciliation only looks at the cash side of each transaction. It confirms that $5,000 left checking on the 4th. It doesn't care whether you called that $5,000 "rent," "owner's draw," or "transfer to savings." All three reconcile identically. Only one of them is right.

So when the bank matches and the reports don't make sense, the problem is almost always classification, which is the accounting word for which category each transaction landed in.

Six checks to run when the balances match but the numbers don't

Check 1: Revenue against customer deposits. Add up what customers actually paid into your accounts this year. Compare it to revenue on the profit and loss. If revenue is higher, something that wasn't a sale got called one. The usual suspects are transfers between your own accounts and money you put in yourself. See Money Moved Between Your Own Accounts. Did Your Books Call It a Sale? If revenue is roughly double, see How Income Gets Counted Twice.

Check 2: The uncategorized bucket. Every set of books has a junk drawer: "Uncategorized," "Ask my accountant," "Other expense." Whatever is in there reconciled fine and means nothing. Empty it. Each item is either a real business expense with a proper category, a personal item that belongs in owner's draw, or a transfer that needs its other side.

Check 3: Transfers on the profit and loss. Scan your expense categories for credit card payments. Paying the card from checking is a transfer, not an expense. The expenses were the purchases. If the payment is also an expense, everything on that card is counted twice. Scan your income for round-number deposits with no invoice behind them.

Check 4: Owner money sitting in expenses. Personal purchases on the business card that got a business category are inflating your expenses and understating your profit. Money you put into the business that got called revenue is doing the opposite. Both belong in equity. See Business Purchase, Personal Card.

Check 5: Big purchases that might be assets. A $3,000 laptop booked as "office supplies" hits your profit all at once. Depending on your CPA's approach, a purchase like that may belong on the balance sheet as an asset and be expensed over time instead. The bookkeeping job is to make big purchases visible and ask. The treatment is your CPA's call.

Check 6: The same vendor in three categories. Your contractor is "consulting" in March, "professional fees" in June, and "contract labor" in October. None is wrong. Together they make every category meaningless. Group by vendor, pick one category, and apply it to every instance. Then check whether any category's total changed enough to explain what looked wrong.

Illustrative example. A design studio's profit and loss showed $140,000 of revenue, $78,000 of expenses, and $62,000 of profit. Check 1 found $22,000 of owner contributions booked as sales, so revenue was really $118,000. Check 3 found $18,000 of credit card payments booked as "bank charges," so every purchase on that card had been counted twice. Check 4 found $9,000 of personal purchases sitting in business categories. After fixing all three, revenue was $118,000, expenses were $51,000, and profit was $67,000. Every account had reconciled before and after. The cash never changed. The meaning did.

Why this is the step that gets skipped

Reconciling has a finish line. The number matches or it doesn't. Reviewing classification doesn't have one. Nobody tells you the categories are right. You have to look at the reports and ask whether they make sense, and that's a judgment, not a match.

It's also why a matching balance feels like done. It's the last objective checkpoint. Everything after it is review.

How this works in Prosper

Prosper is the platform TidyMonth uses for the monthly work, and you can use it yourself with your CPA.

The reason classification review is hard in most software is that the evidence is somewhere else. The receipt is in your email. The reason you chose a category is in your memory. The other side of the transfer is in a different account's feed. When you or your CPA look at a category later, all you see is the label.

Prosper keeps the evidence beside the decision. Every transaction that needed a judgment shows the receipt, the note, the question that was asked, and the answer you gave. A transfer shows both sides. A split shows the itemized lines. When you look at "professional fees" in Prosper, you can open any line and see why it's there.

That changes what review means. Instead of trusting a label, your accountant traces the entry back to its source. The CPA packet Prosper prepares carries the transactions, the decisions, the evidence, and the open questions together, so classification can be reviewed the way reconciliation is checked.

Prosper doesn't certify that your categories are right. It makes them checkable.

If you'd rather hand it off: TidyMonth by Prosper

If you'd rather someone else ran the six checks every month, that's what the review step in a TidyMonth close is for.

Start with a free Books Check. No card, and nothing in your accounts is changed while we look. The results show which months reconcile, and separately, what needs classification review and what couldn't be verified from the records available. Reconciled and reviewed are reported as two different things, because they are.

If your business fits, monthly bookkeeping is $199 per month, with catch-up scoped and priced before checkout. TidyMonth handles the categorization and reconciliation in Prosper. A bookkeeper reviews the close: the classifications, the transfers, the owner items, and the open questions, not just the balances. You answer the questions that need your knowledge of the business.

If the first close isn't worth it, your first $199 is refunded in full. Cancel in one click. Export your books any time.

What your CPA still decides

Running these checks gets your categories consistent and your owner money out of the profit and loss. It doesn't decide whether a purchase is an asset or an expense, how contributions and draws are treated for your entity, or whether the accounting basis you're using is the right one. Those are your CPA's calls. Reconciled balances and reviewed classifications don't certify that financial statements are correct. They make the statements traceable, which is what lets your accountant decide.