Behind on Your Bookkeeping? What to Do First

Falling behind on bookkeeping is common, and it is fixable. It usually happens the same way: a busy season, a bookkeeper who left, a software change, and then a few months that nobody wants to open. The problem is rarely the backlog itself. It is not knowing where to start, so nothing starts.

This guide gives you the order to do things in. It is written for US small business owners whose books are anywhere from a few weeks to a few years behind.

First, Work Out How Far Behind You Are

Before anything else, find the last month that is genuinely finished: every bank and credit card account reconciled to its statement, with nothing sitting in an uncategorized account. That month is your starting line. Everything after it is the backlog, even if some transactions were entered.

The size of the gap tells you how urgent this is:

• Under one month: not really behind. Finish the month and move on.
• One quarter or more: estimated tax payments, payroll filings, and sales tax returns are now being made without current numbers behind them.
• Past a tax deadline: this is now a compliance problem as well as a bookkeeping one, and it changes what you do first.

Our guide to catch-up bookkeeping costs and timelines explains these thresholds in more detail.

Step 1: Check Which Deadlines Fall Inside the Gap

This is the step people skip, and it is the one that costs the most. Before you touch the books, list every filing and payment that came due during the backlog. For most US small businesses, that means:

• Income tax returns. For calendar-year businesses, S corporation and partnership returns (Forms 1120-S and 1065) are generally due March 15. C corporation returns (Form 1120) and individual returns, including a sole proprietor’s Schedule C, are generally due April 15.
• Estimated tax payments. The IRS divides the year into four payment periods. If you owe tax on business profits that nobody withholds, these are how you pay it during the year.
• Payroll filings. If you have employees, federal payroll taxes are deposited on a monthly or semiweekly schedule and reported quarterly on Form 941.
• Form 1099-NEC. Due January 31 for payments to contractors for the previous year.
• Sales tax returns. Filed on whatever schedule each state assigned you, often monthly or quarterly.

If a Deadline Has Already Passed

File anyway, as soon as you can produce reasonable numbers. The IRS is explicit that you should file every return that is due, whether or not you can pay in full, and the penalties show why. The failure-to-file penalty is 5% of the unpaid tax for each month the return is late, up to 25%. The failure-to-pay penalty is 0.5% a month, also capped at 25%. Filing late but unpaid costs far less than not filing at all. If you cannot pay the full balance, the IRS offers payment plans.

If a deadline is coming up and the books will not be ready, an extension buys time to file but not to pay. The tax is still due on the original date, so estimate it and pay what you can.

And if you have received an IRS or state notice, deal with it now. Notices carry their own response dates, and those do not wait for the bookkeeping.

Step 2: Gather Every Statement Before You Start

Catch-up bookkeeping is built from statements, not memory. Download these for every month in the backlog before any categorizing begins:

• Bank statements for every business account, including savings accounts
• Credit card statements, including cards used only occasionally for business
• Loan and line-of-credit statements
• Payment processor reports (Stripe, Square, PayPal, Shopify) showing gross sales, fees, and payouts
• Payroll reports, if you use a payroll provider
• Receipts or invoices for large or unusual expenses

Do this first because statements get harder to find. Many banks only keep 12 to 24 months online, and older statements have to be requested, sometimes for a fee. A backlog that is missing statements is slower and more expensive to fix than one that is simply long.

Step 3: Stop the Backlog From Growing

Before fixing the past, make sure this month does not become part of the problem. Two changes do most of the work:

• Keep business and personal spending apart from today. Mixed accounts are one of the biggest drivers of catch-up time, because every transaction has to be questioned rather than categorized.
• Keep the current month current. If your software has a bank feed, connect it. Even a weekly 30-minute session to categorize new transactions stops the gap from widening while you work backward.

Step 4: Decide Whether to Do It Yourself

Catching up yourself is realistic for some backlogs and a poor use of time for others. A professional bookkeeper typically needs two to four hours per month of records with clean statements. If you are not doing this every day, expect it to take you considerably longer.

Your situation	Doing it yourself is reasonable	Handing it off makes more sense
How far behind	One to three months	More than a quarter, or across a year-end
Deadlines	None missed	A return or payment is already late
Transaction volume	Under about 100 a month	Hundreds a month, or several processors
State of the records	All statements available, business-only accounts	Missing statements, or personal spending mixed in
Existing entries	Nothing entered yet, or entries you trust	Entries you suspect are wrong, or reconciliations that were forced to balance
Your comfort with the software	You reconcile accounts routinely	You have never reconciled an account

If you are leaning toward handing it off, our catch-up bookkeeping cost calculator gives you a typical range from four questions, so you know roughly what to expect before you ask anyone for a quote.

Step 5: Catch Up From the Oldest Month Forward

Whoever does the work, the order matters. Start with the first unfinished month and work forward one month at a time:

1. Confirm the opening balance. Each account’s balance at the start of the month should match the previous statement’s closing balance. If it does not, the problem is in an earlier month, and fixing later months first just moves it.
2. Record and categorize every transaction for the month, from the statements.
3. Reconcile each account to the statement’s closing balance.
4. Move to the next month only once every account reconciles.

Working forward means every finished month becomes a verified starting point for the next. Working on whatever looks most urgent produces books where no month can be trusted.

Step 6: Put a Routine in Place So It Does Not Happen Again

A backlog is a symptom of having no routine. Once you are current, the lightest routine that works for most small businesses is:

• Weekly: categorize new transactions from the bank feed.
• Monthly: reconcile every account and review the profit and loss statement, ideally by the 15th of the following month.
• Quarterly: check estimated tax payments and sales tax filings against actual results.

If that routine is not going to happen in your business, and for many owners it will not, that is the case for outsourced monthly bookkeeping rather than another catch-up in a year.

Mistakes That Make a Backlog Worse

• Forcing reconciliations to balance. Adjusting an entry so the numbers match hides the real error, and someone has to find and undo it later.
• Deleting everything and starting over. Sometimes a fresh start is right, but decide that deliberately, with a backup, not out of frustration.
• Guessing categories to finish faster. An expense you cannot identify should be flagged for review, not filed under whatever seems close.
• Ignoring letters from tax authorities. A notice does not go away while the books are being fixed.
• Waiting for a quiet month. The quiet month rarely comes, and the backlog grows by one month every month you wait.

Frequently Asked Questions

What should I do first if I am behind on bookkeeping?

Check which tax filings and payments came due during the backlog, and deal with anything already late. Then download every bank and credit card statement for the missing months before any bookkeeping starts. Catch up from the oldest month forward, reconciling each month before moving to the next.

Should I file my taxes late or wait until my books are caught up?

Do not wait past the deadline for perfect books. File or extend on time, and remember an extension gives more time to file but not to pay. If a deadline has already passed, file as soon as you have reasonable numbers: the IRS failure-to-file penalty is 5% of unpaid tax per month, far more than the 0.5% failure-to-pay penalty. Your tax professional can advise whether an amended return is needed later.

How long does it take to get caught up?

A professional bookkeeper typically needs two to four hours per month of records when statements are clean. Turnaround ranges from about a week for a one- to three-month backlog to four to eight weeks or more for a year or longer, because it includes gathering statements and answering questions about unclear transactions.

How do I stop falling behind again?

Keep business and personal accounts separate, categorize transactions weekly, and reconcile every account monthly. If that routine will not happen consistently in your business, outsourcing monthly bookkeeping costs less over time than repeated catch-up projects.

Books already months behind? See how Veris Financials handles books cleanup, including a free 48-hour diagnostic and a fixed price, or book a free consultation.