Guide
Missing one year or several, the path back is the same: find out what the IRS already knows, file in a sensible order, then deal with any balance.
People fall behind on returns for ordinary reasons: a divorce, a new business, an illness, a year when money was tight and filing felt pointless. The longer it goes, the harder it seems to start. The good news is that catching up follows a predictable sequence, and most of it is paperwork you can begin this week.
Here are the steps that work best, roughly in the order you should take them.
Sign in to (or create) your IRS online account. It shows balances owed, payment history and transcripts for past years, which tells you which returns the IRS has on file and which it doesn't. Make a simple list: year, filed or not, and any letters you received for that year.
A wage and income transcript shows the W-2s, 1099s, 1098s and similar forms that employers, banks and other payers reported to the IRS under your number. The IRS makes it available for the current year and the nine years before it, through your online account or by filing Form 4506-T and checking the box on line 8.
Transcripts may not show everything, such as cash income or business expenses, so treat them as a floor, not the full picture.
Two timelines shape the order. First, a refund for withholding or estimated payments can only be claimed if you file within three years of that return's due date; after that the money is lost. Second, IRS policy says delinquency enforcement generally covers no more than six years, although the IRS can reach further back depending on the facts.
For most people that means the six most recent missing years are the priority, with refund years inside the three-year window at the top of the pile. A tax professional can confirm whether older years matter in your case.
If you don't file, the IRS may prepare a substitute for return using the income reported to it. The IRS notes that a substitute return might not give you credit for deductions and exemptions you're entitled to. Filing your own accurate return for that year is usually the way to bring the assessed amount in line with what you actually owe.
The IRS says to file all returns that are due whether or not you can pay in full. Filing stops the failure-to-file penalty from growing, and it's a precondition for most relief. Once the returns are in, you can look at a short-term extension to pay or an installment agreement. Our guide to IRS payment plans compares the options.
If you had business income, the return needs expenses as well as income. Bank and card statements, invoices, mileage apps and supplier accounts can rebuild most of a year. Doing this properly often lowers the tax owed compared with the income-only figures the IRS has. If the books are months or years behind, catch-up bookkeeping is usually the first job.
If you lived or earned income in South Carolina during the missing years, you may also have unfiled state returns. The South Carolina Department of Revenue handles those separately from the IRS, with its own notices and collection process. Our post on SCDOR tax issues explains what to expect.
The IRS offers penalty relief in several forms, including first-time penalty abatement and relief for reasonable cause such as serious illness or a disaster. Some requests can be made by phone using the number on your notice; others are filed on Form 843. Relief is decided case by case, and it generally makes sense to ask once every return is filed.
If you already face a levy, a lien or a wage garnishment, you need someone who can speak to the IRS for you. CPAs, enrolled agents and attorneys have unlimited representation rights, including in collection matters. At Elite Pro-Tax, the office prepares the missing returns and organizes the case, and representation is handled by the independent licensed CPA it partners with. See our back tax filing page for how that works.
Once you're caught up, fix the reason you fell behind. Check your withholding with the IRS Tax Withholding Estimator, set calendar reminders for quarterly estimated payments if you're self-employed, and keep a folder for tax documents as they arrive. Our quarterly estimated taxes guide covers the basics.
The tax prep checklist lists the rest of what a preparer will ask for.
IRS policy says delinquency enforcement generally covers no more than six years, so most people start with the last six missing years. Refund years inside the three-year window come first because the refund is lost after that. The IRS can go further back depending on the circumstances, so confirm the right number for your case with a tax professional.
Request a wage and income transcript for each missing year. It lists the W-2, 1099, 1098 and similar forms that payers reported to the IRS, and it covers the current year and the nine years before it. You can get it through your IRS online account or with Form 4506-T. For business expenses, rebuild the year from bank and card statements.
Only if you file within three years of that return's original due date. After the three-year window closes, any refund from withholding or estimated payments for that year is lost, even though you should still file the return. If you think you may be owed money for a recent year, put that return at the top of your list.
The IRS says an accurately completed past-due return typically takes about six weeks to process. Mailed returns and returns with errors can take longer. Keep copies of everything you send, note the date you mailed or e-filed each return, and check your IRS online account for updates.
Not the question you had? The full tax FAQ covers more ground, and our client reviews say what the work is actually like.
Not filing is a bigger problem than not paying — and it is the one that keeps getting worse on its own.
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