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title: "Behind on business taxes? Fix the books first | Ledgerbrook"
source: https://ledgerbrook.com/blog/behind-on-business-taxes/
description: "Behind on business taxes? Why the books come before the returns, and how to rebuild years of records from bank statements."
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# Behind on business taxes? Fix the books first

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[Omkar Moraye](/about/) · October 23, 2026

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## What should a business owner do if they are years behind on taxes?

Start with the books, because a return is only as accurate as the records behind it. The IRS normally asks for no more than the last 6 years of missing returns. Pull every bank and card statement for those years, rebuild and reconcile the ledger one year at a time, oldest first, and hand each closed year to a CPA.

Being behind on business taxes almost always means being behind on the books first. The return did not get filed because nobody could say what the business made, and nobody could say that because the bank and card activity was never entered, categorized and reconciled. By the time an owner calls a CPA about three or four unfiled years, the CPA’s first question is the same one every time: where are the books?

This post is about that part. It covers what the IRS expects from someone with unfiled returns, in one sourced section, and then the work that has to happen before any preparer can file: which records are still obtainable for each year, the order to rebuild the years in, and what a finished year looks like when it goes to the preparer. Ledgerbrook keeps books. It does not prepare returns or represent anyone before the IRS, so penalties, payment plans and notices go to your CPA, enrolled agent or tax attorney.

## What the IRS expects when returns are unfiled

The IRS position is short: “File all tax returns that are due, regardless of whether or not you can pay in full” ([IRS, Filing past due tax returns](https://www.irs.gov/businesses/small-businesses-self-employed/filing-past-due-tax-returns), updated May 7, 2026). If you do not, it may file a substitute return for you, which “might not give you credit for deductions and exemptions you may be entitled to receive.” A refund for an unfiled year has to be claimed “within 3 years of the return due date,” and after that it is gone.

How far back the IRS goes is set by its own policy, not by statute. Policy Statement 5-133 says that “normally” enforcement of delinquent returns covers “not more than six (6) years,” and that going further takes prior managerial approval ([IRM 1.2.1.6.18](https://www.irs.gov/irm/part1/irm_01-002-001)). There is no clock running in your favor on the years you skipped. Tax is normally assessed within 3 years after a return is filed (IRC §6501(a)), but “in the case of failure to file a return,” it may be assessed at any time (IRC §6501(c)(3)). Once a tax is assessed, the IRS generally has 10 years to collect it ([IRS, Time IRS can collect tax](https://www.irs.gov/filing/time-irs-can-collect-tax)).

Two points change how urgent this is. Penalties differ by return type, and the partnership and S corporation penalty is charged per owner, per month, even when no tax is due; the figures are in [what happens if business taxes are late](/blog/business-tax-deadlines/). And unpaid payroll withholding is in a category of its own: a person responsible for paying over withheld tax who willfully fails to do so can be held personally liable for the full amount (IRC §6672). If the business ran payroll during the unfiled years, tell your preparer before anything else.

Everything else here, from penalty relief to payment plans to which year gets filed first, is your preparer’s call. What they need from you is the same in every case: a set of books for each year that agrees with the bank.

## Why the books come before the return

A business return is built from a profit and loss statement and, for a partnership or corporation, a balance sheet. Neither exists until every transaction for the year has been entered and every account reconciled to its statement. A preparer can work from a box of statements, but then the preparer is doing the bookkeeping at the preparer’s rate, and usually with less patience for a shoebox than a bookkeeper has.

Books matter for a second reason. The IRS already holds third-party reports for most businesses: Forms 1099-NEC from clients, 1099-K from card processors and payment apps, W-2s and 1099s the business issued. A return that reports less than those forms add up to will draw a notice. A reconciled ledger is what lets the preparer show why the gross figure on a 1099-K is not the business’s income, which is the reconciliation covered in [why your 1099-K doesn’t match your books](/blog/1099-k-and-your-books/).

## What records you can still get, by years behind

The constraint on a multi-year catch-up is rarely the work. It is getting the statements. This is what is usually obtainable, and what each year needs before it can go to a preparer:

| Years behind | Bank and card statements | Other records | What the year needs before filing |
| --- | --- | --- | --- |
| 1 | In online banking; a new QuickBooks bank feed may reach part of it (90 days to 24 months, depending on the bank) | Processor reports, payroll provider reports, vendor portals | All accounts reconciled through December 31, payroll posted from the provider |
| 2 to 3 | Downloadable as PDF and often CSV from online banking, as far back as each bank allows | Processor and payroll history; IRS transcripts for information returns | Opening balances for the earliest year, then each year closed in order |
| 4 to 5 | Online banking may stop short; request older statements from the bank | Vendor duplicates, lender statements, customer 1099s; IRS wage and income transcripts for a sole proprietor | Loan balances tied to lender statements, asset purchases listed for depreciation |
| 6 or more | The Bank Secrecy Act requires banks to keep the records it covers for 5 years (31 CFR §1010.430(d)); older years may have gaps | IRS transcripts, your own downloads and emails, processor archives | The IRS normally stops at 6 years; ask your preparer before rebuilding further back |

Online banking history varies by bank, so check each account before planning around it. Where a statement cannot be found at all, a year can still be reconstructed from the other side of each transaction: deposits from customer records and processor reports, expenses from vendor invoices and card statements. The records the IRS accepts in place of a receipt are set out in [audited with no receipts](/blog/audited-without-receipts/).

### How to find out what the IRS already has

Before rebuilding anything, list what the IRS thinks is missing and what it already knows:

- **Business Tax Account.** It shows the account balance, payments, tax records, notices and authorizations for sole proprietors with an EIN filing Schedule C or F, partnerships, S corporations, C corporations and some single-member LLCs. It “isn’t yet available for LLCs that file as sole proprietors” ([IRS, Business Tax Account](https://www.irs.gov/businesses/business-tax-account), updated October 16, 2026).
- **Wage and income transcripts.** For an individual, including a sole proprietor, the transcript lists the information returns filed under that taxpayer’s number and is available “for the current and nine prior tax years” ([IRS, Transcript types](https://www.irs.gov/individuals/transcript-types-and-ways-to-order-them)). The IRS page on past-due returns points to Form 4506-T, line 8, for wage and income information.
- **Notices.** Every IRS and state letter received for the missing years, unopened ones included. They often name the years and return types already flagged.

Your preparer may pull these under a power of attorney instead, which also keeps the first contact with the IRS in their hands.

## How to catch up several years of books

The method is the same for two years or six. What changes is how many times you repeat steps 3 to 5.

### 1\. List every account and every year

Write down each bank account, credit card, loan, payment processor and payroll provider the business used in each unfiled year, including accounts since closed. A closed account is where catch-ups most often find missing deposits.

### 2\. Agree the years with your preparer

Your preparer decides how many years to file, normally the last 6 under the IRS policy above, and whether an older year with a refund due is worth filing before its 3-year window closes. Rebuild only what will be filed, and start no earlier than the first of those years.

### 3\. Set the opening balances for the oldest year

Every year after the first inherits its balances from the year before, so the oldest year is the foundation. Its opening bank and card balances come from the statements that end on the last day of the prior year; loans come from the lender’s statement for that date; equipment and vehicles come from purchase records. In QuickBooks Online, set the closing date of the books to the day before the oldest year begins once these are in, so nothing lands before it by mistake.

### 4\. Rebuild one year at a time, oldest first

Enter the year from its statements, month by month. Older months will not come through a bank feed, so most of them arrive as CSV or QBO files from online banking; the import steps are in [bank feeds in QuickBooks Online](/blog/bank-feeds-in-quickbooks-online/). Categorize every line, post payroll from the provider’s reports, split loan payments into principal and interest from the lender’s statement, and reconcile every account for every month to its statement.

Do the years in order even if the preparer files the newest first. A year rebuilt out of order has opening balances nobody has proven, and an error in an early year carries into every year after it.

### 5\. Close the year before starting the next

A year is closed when every account is reconciled through December 31, the balance sheet agrees with the statements and lender balances for that date, and the profit and loss has been read line by line for anything personal or miscoded. Then move the QuickBooks closing date to December 31 so later work in the next year cannot change it. In QuickBooks Online the setting is under **Settings**, **Account and settings**, **Advanced**, **Accounting**, then **Close the books** ([Intuit, Lock your books](https://quickbooks.intuit.com/learn-support/en-us/help-article/close-books/close-books-quickbooks-online/L59LelyPM_US_en_US)). In QuickBooks Desktop for Windows it is **Company**, then **Set Closing Date** ([Intuit, Set the closing date in QuickBooks Desktop](https://quickbooks.intuit.com/learn-support/en-us/help-article/close-books/set-change-closing-date-closing-date-password/L2uKHmMhZ_US_en_US)).

### 6\. Hand each closed year to the preparer as it is finished

Send each year when it closes rather than all of them at the end, so the preparer can start on the first return while the next year is rebuilt. The package is the same one a CPA asks for at any year end: profit and loss, balance sheet, general ledger, the reconciliation reports for December, and the 1099 totals by vendor. [What your CPA needs at year end](/blog/what-your-cpa-needs-at-year-end/) lists it in full.

### 7\. Keep the current year current

While the old years are being rebuilt, the current year is still running. Keep this year’s books reconciled monthly, and keep estimated payments and payroll deposits going on time, so the backlog stops growing while it is being cleared. Dates for both are in [business tax deadlines](/blog/business-tax-deadlines/).

## How long it takes, and what it costs

The work scales with months, accounts and transaction volume, not with revenue. A year of books for a small file is a matter of days once the statements are in hand; the waiting is usually on the statements. How the timeline is built, and how to work back from a filing date your preparer sets, is in [how long catch-up bookkeeping takes](/blog/how-long-does-catch-up-bookkeeping-take/). Market prices by months behind, and Ledgerbrook’s own, are in [catch-up bookkeeping cost](/blog/catch-up-bookkeeping-cost/).

## Common questions about back taxes and unfiled returns

### What are unfiled tax returns?

Returns that were due and never filed: an income tax return for the business or its owners, and also payroll returns (Forms 941 and 940), information returns such as 1099-NECs the business should have issued, and state returns such as sales tax. A business that is behind on its income tax return is often behind on some of the others too, and each has its own records.

### What is the IRS 6 year rule?

It is the IRS’s internal policy, not a law: Policy Statement 5-133 says that normally the IRS enforces delinquent returns for no more than six years, and goes further only with managerial approval. It limits how far back the IRS usually asks you to file. It does not limit how far back it may assess tax on a year with no return.

### What happens after 6 years if you don’t file taxes?

Nothing expires. The assessment period does not start until a return is filed (IRC §6501(c)(3)), so a year with no return stays open. The 6-year policy usually means the IRS will not ask for older years, but it can, and any refund for those years is long past its 3-year limit.

### How long are you liable for back taxes?

For a filed return, the IRS normally has 3 years from filing (or from the due date, for a return filed early) to assess more tax, and generally 10 years from the assessment to collect it. Some events suspend the 10-year period, including a pending installment agreement request, an offer in compromise and bankruptcy, according to the IRS collection page cited above. For an unfiled year, the first clock never starts.

### How do I find out if my business owes back taxes?

Check the IRS Business Tax Account if the business type is eligible, read every notice received for the years in question, and ask your preparer to pull account transcripts. Do the same with each state the business has filed in or should have, because sales tax and payroll accounts are separate from income tax.

### Does the IRS forgive unfiled taxes?

Not by itself. Penalties can be removed for reasonable cause, and the IRS has a first-time abatement policy, but it requires a clean record: the same return type filed on time for the prior three years, and no penalty assessed in that time other than the estimated tax penalty ([IRS, First Time Abate](https://www.irs.gov/payments/penalty-relief-due-to-first-time-abate-or-other-administrative-waiver), updated July 14, 2026). Several unfiled years usually rule that out. Payment plans and offers in compromise exist; which applies is a question for a CPA, enrolled agent or tax attorney.

### Can the IRS come after you personally for business taxes?

It depends on the entity. A sole proprietor’s or single-member LLC’s business income is reported on the owner’s own return when the LLC is disregarded, so the tax is the owner’s. Partnership and S corporation income passes through to the owners’ returns on K-1s. A C corporation owes its own income tax. Payroll withholding is the exception for every entity type: a responsible person who willfully fails to pay it over can be held personally liable under IRC §6672. Your attorney or CPA can tell you how this applies to your structure.

### What do I do if I haven’t filed taxes in 10 years?

The same steps, with fewer years. Under the 6-year policy the IRS normally asks for the most recent six, so the rebuild usually starts at the opening balances of the sixth year back. Confirm the years with your preparer before rebuilding anything older.

## Getting the books rebuilt for you

Rebuilding unfiled years is catch-up bookkeeping: statements entered month by month, every account reconciled, and each year closed and handed to your preparer in order. Ledgerbrook does it in QuickBooks Online for **$99 per month of backlog**, with 20% off the whole job from 6 months, and from 12 months the published figure is a ceiling with a custom quote below it. Your preparer files; we never contact the IRS for you. The full scope is on the [catch-up bookkeeping](/quickbooks-catch-up-bookkeeping/) page.

$99per month of backlog20% off 6+ months

> **When to hand this off:** if more than one year is unfiled, or the business ran payroll in any of those years, the books for every year have to be rebuilt in order before a preparer can file, and the statements usually take longer to gather than the work itself. A [free file review](/contact/?from=blog%2Fbehind-on-business-taxes) counts the months and accounts first and gives a fixed price in writing.

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