Reviewed by Steven Montgomery, EA and Gorden Gates, EA, IRS Enrolled Agents · Updated November 2026
For the IRS, you usually need to file the last six years of missing returns. Hawaii is different.
The Hawaii Department of Taxation (DOTAX) has no six-year policy, and when a return was never filed, state law lets it assess the tax at any time. For rental owners who never filed GE tax returns, DOTAX recommends filing at least 10 years.
So the honest answer is that it depends on which agency is involved and what kind of tax it is. You should check both before filing anything.
The IRS Six-Year Rule (It’s a Policy, Not a Law)
The “six-year rule” comes from IRS Policy Statement 5-133, published in the Internal Revenue Manual at IRM 1.2.1.6.18. It says that enforcing delinquent returns will “normally” cover “not more than six (6) years,” and that going further back requires a manager’s approval.
When deciding how far back to go, the IRS looks at:
- your history of filing and paying,
- whether the income came from illegal sources,
- the effect on voluntary compliance,
- how much tax is likely due, and
- whether it can realistically be collected.
What the policy doesn’t do is limit the law. Under Internal Revenue Code §6501(c)(3), when no return is filed, the IRS can assess tax “at any time.” So the six years are where the IRS usually stops, but they are not a legal shield. In most cases, filing the last six years brings you back into good standing.
The same policy says the IRS will accept delinquent returns unless there are signs of willfulness or fraud. Most people who come forward on their own are treated as people catching up, not as criminals.
Hawaii: No Six-Year Policy, and No Time Limit for Non-Filers
Hawaii law treats unfiled returns more strictly:
- Income tax. HRS §235-111(c) says that when a return isn’t filed, the tax “may be assessed or levied at any time.”
- General Excise Tax (GE tax). HRS §237-40(b) says the same when the annual GE return wasn’t filed.
- Transient Accommodations Tax (TAT). HRS §237D-9(d) has the same rule for vacation rentals.
In practice:
- Rental owners: DOTAX’s rental FAQ says there is “no statute of limitations for non-filers” and that the Department “generally recommends that non-filers submit at least 10 years of back returns if rental activity has been ongoing for that long.”
- Voluntary disclosure: Under Tax Information Release 2020-03, the look-back period is generally ten years, and it can be longer if there are signs of questionable conduct.
| IRS | Hawaii DOTAX | |
|---|---|---|
| Legal limit to assess when no return was filed | None (IRC §6501(c)(3)) | None (HRS §235-111(c), §237-40(b), §237D-9(d)) |
| Years usually required | Last 6 (Policy Statement 5-133) | Often 10 or more for GE and TAT. 10-year voluntary disclosure look-back |
| Can the agency file a return for you? | Yes, a substitute for return (IRC §6020(b)) | Yes, from the “best information obtainable” (HRS §235-107) |
Bottom line for Hawaii residents: you may only need six years of federal returns, but the State could ask for more Hawaii income tax returns. If you had business or rental income and never filed GE tax, expect DOTAX to want considerably more.
Why Filing Fewer Years Isn’t Always Cheaper
It’s tempting to file the minimum. But several things change the math:
- Refunds expire after three years. Under IRC §6511, you generally have to claim a refund within three years of the return’s due date. If you had withholding or qualified for credits like the Earned Income Tax Credit, older years may hold refunds you can still claim if you act now. Hawaii’s rule is similar (HRS §235-111(b)).
- Substitute returns cost more. If the IRS has already filed a substitute return for one of your missing years, it probably left out your deductions and expenses. Filing your own return for that year, even if it’s older than six years, can cut the bill significantly.
- Payment plans and settlements need current filing. The IRS requires all required returns to be filed before it approves an installment agreement or considers an offer in compromise. Hawaii’s offer in compromise requires that you have filed all required returns through the current period.
- Social Security credits. If you’re self-employed and don’t file, your earnings aren’t reported to the Social Security Administration. That can reduce your retirement and disability benefits later.
Find Out Exactly Which Years You Need
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How We Work Out Your Exact Years
Every unfiled-returns case starts with records, not guesses. If paperwork is missing, you can still file back taxes without records:
- IRS account transcripts show, for each year, whether a return is on file, whether the IRS filed a substitute return, and what has been assessed.
- IRS wage and income transcripts list the W-2s, 1099s and other forms reported under your Social Security number. That is the IRS’s evidence of what you owe.
- Hawaii records. Hawaii Tax Online (hitax.hawaii.gov) and DOTAX records show filed periods and balances for income, GE and TAT accounts.
- Collection dates. For years already assessed, we check the collection deadlines: generally 10 years for the IRS and 15 years for Hawaii income tax. Those deadlines can affect your strategy.
From there, we put together a filing plan that covers the years each agency will actually require. It also includes the years where filing saves you money, through refunds or by replacing a substitute return.
What Order Should You File In?
Usually, start with the years that have the most at stake:
- years with a substitute return or a pending Notice of Deficiency (the 90-day letter),
- years with refunds about to expire, and
- the years needed to get you current.
Then file the remaining required years. When federal and Hawaii returns cover the same year, prepare them together so the numbers match. DOTAX does compare them.
Do You Qualify for Hawaii Voluntary Disclosure?
If DOTAX hasn’t contacted you yet, voluntary disclosure may cut your Hawaii penalties. Under TIR 2020-03:
- You must not already have been contacted by DOTAX. You also can’t be under audit or criminal investigation, or have used the program in the last five years.
- The request can’t be anonymous. It starts with a written statement of facts.
- You must file actual returns for every year and every tax type involved.
- Penalty and interest waivers are discretionary. DOTAX decides case by case, and nothing is guaranteed.
Once you receive a DOTAX letter, this option is usually gone. Talk to a representative before you reply.
Frequently Asked Questions
Does the IRS really only go back six years?
Usually. IRS Policy Statement 5-133 normally limits enforcement of delinquent returns to six years, but the IRS can ask for more with a manager’s approval. The law itself has no time limit when a return was never filed.
How many years does Hawaii require?
Often more than six. Hawaii can assess unfiled income, GE and TAT returns at any time. DOTAX recommends that rental owners who haven’t filed GE tax submit at least 10 years, and the voluntary disclosure look-back is generally ten years.
Can I still get refunds for old unfiled years?
Only for about the last three years. You generally have to file within three years of the return’s due date. After that, the refund is lost.
What if the IRS already filed a return for me?
You can usually replace a substitute return by filing your own accurate return. That often lowers the tax because the IRS version leaves out deductions.
Get a Clear Answer for Your Situation
Every case is different. Our Enrolled Agents, Steven Montgomery, EA and Gorden Gates, EA, will check your IRS and Hawaii records and tell you exactly which years to file. We start with a fixed-fee analysis to understand your tax situation and identify the next steps. We then provide upfront quotes for any overdue tax returns and the recommended resolution work. Each quote explains what’s included. If additional work becomes necessary, we explain the change and agree on any additional fee with you before proceeding.
Your tax-return preparation fee is quoted after we review the required years, return types, and available records. The quote identifies the returns included and any bookkeeping or other work needed to complete them. If we discover additional filing requirements or missing information that changes the scope, we will discuss any additional fee with you before doing that work. For more, see our unfiled tax returns help page.
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This article is general information, not tax advice for your specific situation.
