By Brayden Callahan, Founder Updated
Months behind on your books? A step-by-step plan to get caught up, what it costs to pay someone to do it, and how to stay current afterward.
Falling behind on bookkeeping is common, and it is fixable. It usually happens for ordinary reasons: a busy season where client work came first, a business that grew faster than the system around it, a bookkeeper or app that stopped working out, or a first year where nobody explained what needed doing each month.
Waiting has a cost even when you can't see it. Without current books you can't tell whether the business is making money, your quarterly estimated tax payments are guesses, and tax season turns into rebuilding months of activity from memory.
The IRS puts the case for records plainly: good records help you monitor the progress of your business, keep track of deductible expenses, prepare your tax returns and support the items you report on them.
The good news is that your bank and card statements already hold most of what you need. Catching up is mostly sorting, not rebuilding from scratch. Here is the order that works.
List every account the business touched during the months you're behind: business checking and savings, every credit card used for business, payment apps and processors (PayPal, Venmo, Stripe, Square), and any personal card that paid for a business expense.
For each account, download the monthly statements (PDF) and, if the bank offers it, a transaction export (CSV) for every month you need. If a month is missing from online banking, ask the bank for it. You want an unbroken run of statements for every account.
Then gather the paper trail around the money: invoices you sent, receipts (search your email for words like receipt, invoice and order), loan statements, any 1099 forms you received, and last year's tax return so you can see how things were categorized before.
Last, find the date your books were last right. That is your starting line. If you have never kept books for this business, start from the day it began or from January 1 of the first year you still need to file, whichever is later.
IRS Publication 583 says one of the first things you should do when you start a business is open a business checking account, and keep it separate from your personal checking account. If you don't have one yet, open it now. It is the single change that makes every future month easier.
For the months you're catching up, go through any mixed accounts and mark each personal transaction as personal, so it stays out of your business numbers.
Business expenses you paid with personal money still belong in the books. Record them as business expenses and note that personal funds paid for them; your CPA may call this an owner contribution.
Money you took out of the business for personal use is a withdrawal (often called an owner draw), not a business expense, so keep it out of your expense categories. If you're unsure how to record one, ask your CPA.
Work oldest month first, and finish each month before you move on. A finished month is one you never have to open again.
Use a short list of categories that line up with the tax form you file. If you're a sole proprietor, or a single-member LLC that hasn't elected to be taxed as a corporation, that is usually Schedule C: advertising, car and truck, contract labor, insurance, legal and professional fees, office expense, rent, supplies, taxes and licenses, travel, meals, utilities, and an "other" bucket for things like software and bank fees. The Schedule C handbook in these guides walks through each line.
Watch for three things that cause double counting. Transfers between your own accounts are not income or expenses. A credit card payment is not an expense either: the purchases on the card are the expenses, so count those and mark the payment as a transfer. And a refund from a vendor reduces that expense; it is not new income.
Costs you use for both business and personal life, like a phone or a car, get split between the two. Publication 583's own example divides the cost of a van by the miles driven for each purpose.
Can't tell what a charge was? Check your email, your calendar for that day, and the vendor's name online. If it is still a mystery, put it on a short list for your CPA instead of guessing it into a deduction.
Reconciling means checking that your bank and your books agree. Publication 583 puts it simply: when you receive your bank statement, make sure the statement, your checkbook and your books agree. For each account and each month, the ending balance in your books should match the ending balance on the statement.
When they don't match, look for a transaction that never got recorded, a duplicate, a transaction dated in the wrong month, a bank fee you didn't enter, or a transfer recorded on one side but not the other.
You are caught up when every account is reconciled through the last full month and the monthly profit and loss reports look like the business you remember. Read each month's report once. A month with no income, or an expense category that is suddenly ten times larger, points at something to recheck.
If a filing deadline is close, don't wait for perfect books to make a plan. The IRS lets you request an extension by the April filing due date, which gives you until October 15 to file. The extension is only for filing: you still need to pay any tax you owe by the April date.
Catching up may show that you skipped or underpaid quarterly estimated taxes. Sole proprietors generally have to make estimated tax payments if they expect to owe $1,000 or more when they file, and the IRS can charge a penalty when payments are too small or late. Talk to your CPA about what to pay now; the quarterly tax playbook in these guides covers the dates.
Keep everything you gather. The IRS says to keep the records that support the income and deductions on a return until that return's period of limitations runs out. That is generally 3 years, and longer in some cases: for example, 6 years if you leave out income that is more than 25% of the gross income shown on your return. Your CPA can tell you which period applies to you.
If catching up turns up a mistake on a return you already filed, or you have a letter from the IRS, talk to a CPA or an enrolled agent before you change anything.
Catching up once is work. Staying caught up is a short weekly habit. Pick a day and a time, and each week sort that week's transactions while you still remember them.
Once a month, reconcile each account against its statement and read the month's profit and loss report. Once a quarter, check what you owe in estimated tax and pay it.
Publication 583 says it is generally best to record transactions on a daily basis. A weekly habit gets you close without taking over your week.
Hiring help is a good choice when you're years behind, have many accounts, or want a professional to stand behind the work. NerdWallet's 2026 guide to bookkeeping prices says bookkeeping typically costs around $300 per month, and that flat-fee online packages range from around $200 per month to $700 and up.
Catch-up work is often priced as a separate project, because it depends on how many months are behind and how messy they are. NerdWallet's example is Bookkeeper360, which charges $1,000 and up for its onboarding and prior bookkeeping add-on.
When you ask for quotes, ask what is included (reconciliation, a year-end report for your CPA), whether the price is fixed, and whether you have to sign up for monthly service afterward.
Clarity Books AI is bookkeeping software for the self-employed. The AI does your bookkeeping; you answer a few questions a week.
Connect your bank and cards through Plaid (read-only), and Clarity imports your transactions back to January 1 of the current year. The AI sorts them into categories, and a setup review asks you about the ones it isn't sure of. Skip any you're not ready to answer: those, plus any new transactions the AI isn't sure of, come to you in your weekly check-in.
Need earlier years too? Email brayden@claritybooksai.com and we'll help you bring older transactions in.
From then on, new transactions come in on their own, and the weekly check-in asks only about the ones the AI isn't sure of. That habit is what keeps you from falling behind again.
Know what it isn't. Clarity keeps cash-basis books. It has no payroll, bill pay, inventory tracking, balance sheet or trial balance, and it doesn't file your taxes; your CPA or your tax software still does that. There is no human bookkeeper reviewing your books, and you stay responsible for them. If you need any of that, a bookkeeping service or a CPA is the better fit.
It is $149 a month or $1,490 a year, one plan with every feature, and it starts with a 30-day free trial. A card is required, and you aren't charged until day 31.
Checked October 2026. Prices and tax rules change, so confirm with the source or your CPA before you rely on them.
The AI does your bookkeeping; you answer a few questions a week. Connect your bank and start your 30 day free trial.