Reconciliation has a reputation for being technical and boring. It is one of those, depending on how it is done.
The underlying idea is plain enough: take what your books say about an account, take what the bank says about that account, and make sure they agree. When they do not, find the difference and explain it.
What reconciliation actually does
Every bank or card account has two views — what the bank says happened and what the bookkeeping says happened. Reconciliation is the process of comparing the two and confirming they match.
A reconciled account ties to the statement's beginning balance, the statement's ending balance, and every transaction in between. When all three line up, you have a defensible record. When they do not, the difference is the part that needs investigation.
- Beginning balance matches the statement.
- Every transaction on the statement appears in the books.
- Every transaction in the books appears on the statement.
- Ending balance matches the statement.
Why owners skip it (and pay later)
Reconciliation gets skipped because it feels like clerical work, and because the books look fine without it. The problem is that `looks fine` is not the same as `is right.`
A bank line that imported twice will quietly overstate expenses for the year. A missing deposit will quietly understate revenue. A transfer miscategorized as income will inflate both income and expense. None of these announce themselves on the P&L. Reconciliation is how they get caught.
How to reconcile, step by step
The workflow is the same whether you do it by hand, in spreadsheet software, or in a bookkeeping tool. Open the statement. Open the bookkeeping record for the account. Match each transaction, in either direction. Resolve the differences.
Differences usually fall into a small number of categories: a transaction that imported twice, a transaction that did not import at all, a date timing difference that crosses a month boundary, or a transfer that was recorded once on each side instead of as one transfer.
- Open the statement and confirm the beginning balance ties to the books.
- Tick off every statement line against a matching bookkeeping line.
- Identify any bank lines without a match — usually missing imports.
- Identify any book lines without a match — usually duplicates or month-boundary timing.
- Resolve, then confirm the ending balance ties.
How often
Monthly is the standard. Quarterly is the minimum for a small business that cannot keep up with monthly. Annually is what cleanup engagements deal with.
Monthly reconciliation is cheaper than catching up later, because differences are easier to investigate when the memory of the transaction is fresh.
Where Bonnie fits
Bonnie pulls bank and card activity through Plaid, which makes the reconciliation step structurally easier — the bookkeeping side is built from the same statement-level feed the bank exposes.
When something does not match, Bonnie flags the difference rather than absorbing it into a catch-all account. The reconciliation trail is visible: which lines matched, which did not, and what was done about it.
Monthly reconciliation checklist
- Pull the statement for each bank and card account.
- Confirm beginning balances tie to the previous reconciliation.
- Match every statement line to a book line.
- Investigate any difference — missing imports, duplicates, timing, transfers.
- Confirm ending balances tie.
- Document the reconciliation so it is reviewable later.
Reconciliation is one of the few bookkeeping habits that catches problems instead of creating them. The cost is small. The cost of skipping it grows quietly until the cleanup is no longer small.