Updated November 7, 2026. Quick answer: A quarterly close is one sitting, four times a year: reconcile each bank statement to the books, make sure every transaction has its receipt, record the owner draws, total income and expenses, and set aside the estimated tax. Publication 583 says to reconcile the checking account each month; this page suggests a quarter as the longest gap to allow.
On deductions by profession: tax deductions for bookkeepers.
On records for a one-person business: a separate business bank account and reconciling a bank statement to your books.
What the IRS says to reconcile
This page reads the primary sources linked under Sources, as retrieved on November 6 and 7, 2026. Publication 583 is the December 2024 revision.
Publication 583 describes the step: “When you receive your bank statement, make sure the statement, your checkbook, and your books agree.” It also says how often: “You should reconcile your checking account each month.” The summary the IRS expects is a separate item: “Your recordkeeping system should include a summary of your business transactions.” The checklist below is a quarterly sitting that covers three monthly reconciliations at once, and it is the rhythm of the estimated tax payments.
The checklist
Work through it in order:
| Step | What to do | Done when |
|---|---|---|
| 1 | Reconcile each business bank and card statement for the three months to the ledger | Statement balance equals ledger balance, or the differences are listed |
| 2 | Match every transaction to a receipt or invoice | A receipt file name beside each row; see IRS receipt rules for business expenses |
| 3 | Record owner draws as draws | See owner draws |
| 4 | Check income against what clients paid and any forms | See matching 1099s |
| 5 | Update the mileage log and travel record | See the mileage log |
| 6 | Total income and expenses for the quarter and year to date | A one-page summary |
| 7 | Compute and set aside the estimated tax | See self-employment tax |
| 8 | Save the statements and the summary in a dated folder | Same folder as the receipts |
Why match to the bank, not just to receipts
A receipt shows what was bought; the statement shows what left the account. Publication 583 says reconciling will let you verify how much money is in the account, make sure the books reflect all bank charges and the correct balance, and correct errors in the statement, checkbook and books. Bank fees, interest and a charge that appears twice are found only this way.
The year-end version
The fourth close doubles as the year-end. Add the items that happen once: the forms received (see matching 1099s), asset purchases above the expensing limit (see the de minimis safe harbor), the home-office figures (see home office records), and the handoff (see what to send your accountant). For retention, the IRS says: “Keep records for 3 years if situations (4), (5), and (6) below do not apply to you.” The exceptions are listed on the IRS page and summarized on Bookkeeping for a One-Person Business.
A tool can do the matching
If step 1 and step 2 are the slow part, software can do some of the work. SparkReceipt’s home page says that when you drop in a statement, or the bank feed brings it in (in the US), it pairs each line with its receipt. Dext’s US home page says it takes on data entry, categorisation, reconciliation and approvals. These are the vendors’ statements and this page has not used either product; a spreadsheet and a statement PDF do the same job by hand.
Common mistakes
- Waiting for a year-end reconciliation. An error is easier to find in the quarter it happened.
- Reconciling to the ledger but not to the bank. Matching the ledger to itself proves nothing.
- Letting the receipts lag the statements. The match is the point of the exercise.
- Skipping the tax set-aside because the close was busy.
Related: Bookkeeping for a One-Person Business, quarterly estimated taxes, and Receipts and Expense Records for a One-Person Business.
Sources
- IRS Publication 583 (Rev. December 2024), Starting a Business and Keeping Records
- IRS, What kind of records should I keep
- IRS, How long should I keep records
Read from the IRS documents linked above on November 7, 2026. General information, not tax advice. Your own facts decide the outcome, and a preparer, the account provider or the IRS is the right place to confirm anything consequential.