Finding yourself two years behind on your taxes is more common than most people realize. Life events – job changes, financial hardship, family emergencies, or simply falling behind – can cause tax filings to lapse.

The good news is that two years is a manageable situation. The IRS has clear processes for late filers, and catching up now puts you in a far better position than waiting longer.

This guide explains exactly what happens when you have two years of unfiled taxes, what the IRS expects, and how to take your first steps toward resolution.

What Happens When Taxes Are Two Years Late

When you miss a tax filing deadline, the IRS does not immediately take enforcement action. However, two things happen automatically: penalties begin to accumulate and the IRS may file a substitute return on your behalf.

Failure-to-File Penalty

The failure-to-file penalty is 5% of the unpaid taxes for each month your return is late, up to a maximum of 25%. If you owed $5,000 for a tax year and filed 5 months late, the penalty alone could reach $1,250 before interest is added. Over two tax years, these penalties compound significantly.

Failure-to-Pay Penalty

Separate from the filing penalty, the IRS charges 0.5% per month on any unpaid balance, also capped at 25%. When both penalties apply simultaneously, the failure-to-file penalty is reduced to 4.5% per month so the combined rate stays at 5%. Interest on unpaid amounts compounds daily at the federal short-term rate plus 3%.

Substitute for Return (SFR)

If you do not file, the IRS may prepare a Substitute for Return (SFR) using income information reported by employers, banks, and other payers. An SFR does not account for deductions, credits, or filing status that could reduce your tax liability. This often results in a higher assessed tax than if you had filed your own return. Once an SFR is processed, the IRS will send a notice of deficiency, which can eventually lead to collection actions including wage garnishment or bank levies.

IRS Expectations for Late Filers

The IRS does not require you to be current on all back taxes before you can file. However, taxpayers are generally expected to file all required returns and pay any balance owed – or enter into a payment arrangement – to be considered compliant.

Are You Required to File?

Not everyone is required to file a federal return. Your filing requirement depends on your income, filing status, and age. For the 2023 tax year, single filers under age 65 were required to file if their gross income exceeded $13,850. If your income fell below the filing threshold in either year, you may not owe a return – but you might still want to file if you are owed a refund.

The Three-Year Refund Window

If the IRS owes you a refund, you have three years from the original due date of the return to claim it. For a 2022 return due April 18, 2023, the refund deadline would be April 18, 2026. Missing this window means forfeiting the refund permanently. Filing your two missing returns promptly preserves your right to collect any money owed to you.

IRS Enforcement Timeline

For two years of unfiled taxes, you are likely to receive notices from the IRS – typically CP503, CP504, or notice of intent to levy – before enforcement action is taken. These notices provide opportunity to respond and file before levies or liens are issued. Acting before enforcement escalates is significantly easier and less costly.

First Steps to Fix Two Years of Unfiled Taxes

Addressing unfiled returns requires an organized approach. Here is a step-by-step process to get started.

Step 1: Confirm Which Years Are Missing

Request a tax transcript from the IRS to confirm which years have no return on file. You can do this through the IRS online portal at IRS.gov under ‘Get Your Tax Record.’ A Record of Account Transcript will show whether returns have been processed for each tax year.

Step 2: Gather Your Income Documents

You will need income documentation for each missing year. For most taxpayers this includes:

• W-2 forms from all employers
• 1099 forms for freelance, contract, or investment income
• 1099-INT or 1099-DIV for interest and dividends
• SSA-1099 if you received Social Security benefits
• Records of self-employment income if applicable

If you no longer have these documents, request a Wage and Income Transcript from the IRS. This transcript pulls data from forms submitted by third parties – employers, banks, and payers – and covers the relevant tax year. It is available online or by mail using IRS Form 4506-T.

Step 3: Identify Your Deductions and Credits

Gather receipts, statements, and records that support any deductions or credits you plan to claim. This might include mortgage interest statements, charitable donation receipts, student loan interest, childcare expenses, or business expenses if self-employed. Deductions reduce your taxable income, potentially lowering any balance owed.

Step 4: Use the Correct Tax Forms for Each Year

Each tax year uses the forms and rates in effect for that year. You cannot use the current year’s Form 1040 to file a prior-year return. Prior-year forms are available on the IRS website at IRS.gov/forms-pubs. Tax software often supports prior-year filing as well.

Step 5: File the Returns and Address the Balance

Once prepared, file both returns by mail – electronic filing is typically only available for the current and prior one to two tax years through most tax software. If you owe a balance you cannot pay in full, you have options: the IRS offers installment agreements, currently-not-collectible status for financial hardship, and in some cases an Offer in Compromise to settle for less than the full amount.

Documents You Need to Catch Up

Organizing documents before you begin saves significant time. For each missing tax year, gather the following:

• All income statements (W-2, 1099-NEC, 1099-MISC, 1099-G, 1099-K, SSA-1099)
• Bank and investment account statements
• Records of estimated tax payments made (if self-employed)
• Prior-year tax return if available (helpful for carryforward figures)
• Receipts or statements supporting deductions you plan to claim
• Health insurance documentation (for Form 8962 marketplace credits)

If documents are missing, start with IRS transcripts. The Wage and Income Transcript typically becomes available by late summer for the prior tax year and covers the most commonly reported income types.

What If You Cannot Afford to Pay What You Owe?

Filing your return is always more important than paying the balance in full. The failure-to-file penalty (5% per month) is ten times larger than the failure-to-pay penalty (0.5% per month). Filing without payment stops the larger penalty immediately, even if the balance remains unpaid.

Once your returns are filed, you can request a payment plan from the IRS. Short-term payment plans are available for balances under $100,000 and allow up to 180 days to pay. Long-term installment agreements are available for larger or older balances and can spread payments over several years. Neither requires you to pay the full balance upfront.

When to Seek Professional Help

Many taxpayers can handle two years of unfiled returns on their own, particularly if their income came primarily from W-2 employment and their financial situation is straightforward. However, professional assistance is worth considering if:

• You have complex income sources – self-employment, rental properties, investments, foreign income
• You owe a substantial balance and are concerned about penalties
• The IRS has already filed Substitute for Returns on your behalf
• You have received notices of intent to levy or lien
• You are unsure which deductions you are entitled to claim

Enrolled agents, CPAs, and tax attorneys are authorized to represent taxpayers before the IRS. An enrolled agent or CPA can prepare prior-year returns, correspond with the IRS on your behalf, and help negotiate payment arrangements if needed.

For taxpayers with limited income, the IRS Volunteer Income Tax Assistance (VITA) program offers free tax preparation help, including some prior-year returns. Low Income Taxpayer Clinics (LITCs) provide free or low-cost representation for disputes with the IRS.

What Happens After You File

Once you file your late returns, the IRS will process them and issue any refunds or balance-due notices. If you owe, you will receive a bill with interest and penalty calculations included. At that point, you can pay in full, request a payment plan, or explore resolution options with a tax professional.

Filing also stops the accumulation of the failure-to-file penalty, which is the most significant ongoing cost of remaining non-compliant. The sooner you file, the less this penalty grows.

Summary

Two years of unfiled taxes is a manageable situation that millions of Americans navigate each year. The key steps are: confirm which years are missing, gather your income documentation, prepare the returns using the correct prior-year forms, and file by mail. If you owe a balance you cannot pay in full, file anyway and contact the IRS about payment options. Acting now limits further penalty accumulation and restores your standing with the IRS.

If your situation is complex or enforcement has already begun, consider consulting an enrolled agent or CPA who handles back tax cases.