State Tax After Streamlined Filing: What the IRS Program Doesn't Cover

You filed the streamlined package. Three years of federal returns, six years of FBARs, the certification, maybe the 5% penalty check. The IRS side is handled. Then someone asks: what about the state?

And that’s where streamlined stops covering you. The program is federal. It fixes your 1040s and your FBARs through a process the IRS designed and administers, and it does nothing for any state that had its own separate claim on your income during those years. No state signed onto the streamlined procedures. No state agreed to waive its penalties because the IRS waived its own. If you owed a state return for any of those years, you still owe it, and the state doesn’t know or care that you just went through a federal disclosure program.

This gap catches people because streamlined feels comprehensive. You’re fixing everything at once, going back years, paying what you owe, signing a certification, and the whole exercise has the weight of a full resolution. It is a full resolution, of the federal problem. The state problem, if one exists, is a separate fix that runs on a separate timeline with separate rules, and ignoring it means the streamlined filing you just completed may actually be the thing that surfaces it.

Does streamlined filing cover state taxes?

No. The Streamlined Filing Compliance Procedures are an IRS program that covers federal Form 1040 returns and FBARs filed with FinCEN. No state participates, and no state penalty is affected by the submission.

The IRS’s own instructions for Streamlined Foreign Offshore Procedures and Streamlined Domestic Offshore Procedures describe what gets filed: three years of income tax returns (original or amended 1040s), six years of FBARs, and the applicable certification form (14653 for SFOP, 14654 for SDOP). State returns aren’t mentioned because states aren’t part of the deal. The full mechanics of what goes into the federal package are in the SFOP guide.

This matters for two practical reasons. First, if you had a state filing obligation during the covered years and you only file the federal streamlined package, you’ve fixed part of the problem and left the other part open. Second, the federal filing itself can create a trail that leads a state to the unfiled return, because the IRS shares return data with states under IRC 6103(d). Filing the federal fix without addressing the state side isn’t just incomplete; it can be the event that puts the state on notice.

Which states have their own amnesty programs?

Several states run voluntary disclosure programs (VDPs) that offer penalty relief for taxpayers who come forward before the state contacts them. California, New York, and Illinois are the most relevant for cross-border filers, though they work differently from each other and from the IRS streamlined process.

California’s Franchise Tax Board Voluntary Disclosure Program is an ongoing program (not a limited-time amnesty) that lets qualifying taxpayers file delinquent returns with reduced penalties. The FTB will typically waive the late-filing penalty and sometimes the late-payment penalty for participants who come forward voluntarily, haven’t been contacted by the FTB, and agree to file and pay for all open years. California’s program requires that you contact the FTB before filing, which is the opposite of the IRS approach where you just mail the package. The look-back period is usually the current year plus the prior five years, though the FTB can negotiate the scope. Details are at FTB’s voluntary disclosure page. California matters disproportionately because of its aggressive residency rules (more on that below) and because it’s the state most likely to claim a filing obligation from someone who thought they’d left.

New York runs its own voluntary disclosure program through the Department of Taxation and Finance. The standard offer waives civil penalties and limits the look-back to three years for income tax, though the Department has discretion to extend it. The taxpayer has to apply, disclose the liability, and agree to file and pay before the state initiates contact. For someone who lived in New York City, the city income tax adds a layer, and 4 U.S.C. 110(c) defines “State” to include political subdivisions, so the city tax question is wrapped into the same residency analysis. The Toronto to New York move guide covers how those layers stack.

Illinois has periodically offered amnesty programs and maintains a voluntary disclosure program through the Department of Revenue. The standard terms waive penalties and limit the look-back period, usually to the filing period preceding the current year plus four years. Like the others, the taxpayer must not have been contacted by the Department before applying.

Other states with active or periodic VDPs include Virginia, New Jersey, Massachusetts, and Connecticut. Each runs independently, with its own terms, its own look-back period, and its own definition of what “voluntary” means. None of them are coordinated with the IRS streamlined program or with each other, which is why fixing the state side means a separate application to each relevant state rather than one package that covers everything.

Will my state find out from the IRS?

Yes, most likely. IRC 6103(d) authorizes the IRS to share federal return information, including amended returns, with state tax agencies, and most states have active data-sharing agreements in place.

The mechanism is straightforward. When your streamlined submission gets processed and the amended or delinquent federal returns hit the IRS system, the data flows to any state that has an agreement under IRC 6103(d)(1). That section says, in relevant part, that returns and return information with respect to taxes imposed by chapters 1, 2, 6, and 21 “shall be open to inspection by, or disclosure to, any State agency, body, or commission” that is charged with the administration of state tax laws. Every major income-tax state has an agreement in place.

The data the state receives includes the basics: your filing status, income, address, and the fact that the return was an amendment. A state tax agency reviewing that data can see that you filed an amended federal return covering years where no state return exists in their system, and that’s often enough to generate an inquiry letter. The states with the most developed matching programs (California, New York, Massachusetts, New Jersey) are also the ones most likely to follow up quickly.

This isn’t a reason to avoid streamlined. It’s a reason to address the state side proactively rather than waiting for a letter. A state inquiry letter after a streamlined filing puts you in a worse position than filing the state return voluntarily, both because you lose access to voluntary disclosure penalty relief and because the state now has the leverage of an active compliance case.

What if I had rental income in a US state?

If you owned rental property in a US state during any of the streamlined years, that state has a source-income claim on the rental income regardless of where you lived.

Source-state taxation is about where the income comes from, not where you reside. A non-resident who earns rental income from a property in, say, California owes California tax on that rental income under Cal. Rev. & Tax. Code 17951. New York does the same under NY Tax Law 631(b)(1)(B), which defines New York source income for a nonresident to include income from real property located in the state. Most income-tax states follow this pattern.

The streamlined package will show the rental income on the federal return. If the income was properly reported on a state nonresident return at the time, there’s nothing to fix. But if it wasn’t, you now have delinquent state returns to file, and the federal streamlined submission will put the state on notice through 6103(d) data sharing. The same logic applies to business income: if you operated a business with nexus in a state (performed services there, had employees there, had a physical presence), that state’s income tax applied to the business income sourced there, and streamlined doesn’t resolve it.

For more on how rental-property taxes work across borders, the guide on Canadian buyers holding US vacation rentals covers the entity-structure and filing side, and the FIRPTA and depreciation recapture guide covers what happens when the property is sold.

Can California still claim me as a resident?

Yes, and California’s residency definition is broader than most people expect. The Franchise Tax Board applies a “closest connections” test that can keep you as a California resident long after you’ve physically left the state.

California defines a resident as “every individual who is in this State for other than a temporary or transitory purpose” and “every individual domiciled in this State who is outside the State for a temporary or transitory purpose” (Cal. Rev. & Tax. Code 17014(a)). The FTB’s own Publication 1031 says a change of domicile requires three things: abandonment of the prior domicile, physical relocation to the new one, and an intent to remain permanently or indefinitely “as demonstrated by your actions” (FTB Publication 1031, 2025).

What trips people up is the “demonstrated by your actions” part. Keeping a California home available for your use, maintaining a California driver’s license, leaving your voter registration in California, keeping your bank accounts and financial advisors there, and returning frequently are all factors the FTB weighs. The standard is not any single factor but the totality of connections. Someone who moves to another country for work but keeps a house in Malibu, a California license, and flies back every few weeks is still a California resident for tax purposes in the FTB’s view, even if they spend most of their time abroad.

This is particularly relevant for streamlined filers because the program often involves US citizens who lived abroad but maintained some US connections. If those connections were concentrated in California, the FTB can argue you never stopped being a California resident during the streamlined years, which means you owed California returns on your worldwide income (not just California-source income) for every year you were technically still a resident. The moving from Ontario to Florida guide works through how departure-state residency gets determined. The guide on state taxation of retirement income after a move covers how the residency question controls whether your old state can reach specific income types.

New York applies a similar analysis, though its statutory residence test (maintaining a permanent place of abode in New York and spending more than 183 days there) creates an additional hook that California doesn’t use. Both states audit departing residents aggressively, and both use federal data to identify returns they think should have been filed.

What about states with no income tax?

Nine states levy no personal income tax at all: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming. If your only state connection during the streamlined years was residency or property ownership in one of these states, there’s no state return to worry about.

New Hampshire and Washington deserve a footnote. New Hampshire historically taxed interest and dividend income (the “Interest and Dividends Tax”), but that tax was fully phased out effective January 1, 2025, so for streamlined years through 2024 a New Hampshire filer with significant interest or dividend income may still have had an obligation. Washington levies no income tax in the traditional sense, though its capital gains excise tax (effective 2022, upheld by the Washington Supreme Court in Quinn v. State, 2023) applies a 7% tax on capital gains exceeding $270,000 from the sale of stocks and bonds. If you had large realized capital gains sourced to Washington during the streamlined years starting in 2022, that’s a separate filing. For most streamlined filers, neither exception applies, and these states are genuinely zero-obligation on the income-tax side.

If you’re considering a move to a no-income-tax state as part of your broader tax planning after streamlined, the Ontario to Florida guide covers how the departure from a high-tax jurisdiction and the arrival in Florida actually play out, and the news is that the cost sits on the departure side, not the arrival.

Will I owe state estimated tax penalties?

If you owed state tax for any of the streamlined years and didn’t make estimated payments, most states will assess an underpayment penalty on top of the tax and interest, and streamlined doesn’t waive it.

State estimated tax rules generally parallel the federal system: if your tax liability exceeds a threshold (often $1,000, though it varies), you’re expected to make quarterly estimated payments. When you file a delinquent state return years later, the state calculates estimated tax penalties as though you should have been making payments all along. California’s penalty under Cal. Rev. & Tax. Code 19136 runs at a rate set quarterly by the FTB. New York’s penalty under NY Tax Law 685(c) works similarly.

A state VDP may waive the late-filing penalty but typically does not waive the estimated tax underpayment penalty, because the states treat it as interest rather than a true penalty (it’s compensation for the time value of money the state didn’t have, not a sanction for bad behavior). That distinction matters when you’re projecting the total cost: even with a successful VDP application that eliminates the late-filing penalty, you’ll still owe the tax itself, interest on the unpaid balance, and in most states the estimated tax penalty.

The silver lining, if you can call it that, is that the amounts are usually modest relative to the federal side of the streamlined package. State income tax rates produce smaller absolute numbers than federal rates on the same income, and the estimated tax penalty is a fraction of the tax itself. But it’s a real number, and it belongs in the cost projection before you file.

Should I file state returns at the same time?

Yes. Filing the state returns simultaneously with (or immediately after) the federal streamlined package is the approach that produces the least risk and the lowest total cost.

Three reasons. First, the 6103(d) information-sharing pipeline means the state will eventually see your amended federal data. Filing the state return proactively keeps you in control of the timeline rather than reacting to a state inquiry letter. Second, if a state VDP is available and relevant, the voluntary disclosure application has to go in before the state contacts you, and you don’t control how fast the 6103(d) data transfer happens. Filing simultaneously keeps the VDP option open. Third, there’s a practical efficiency: the federal streamlined returns have already been prepared, the income and deduction numbers are computed, and rolling those into a state return is incremental work rather than a from-scratch project.

The preparation sequence that works best in practice is: prepare the federal streamlined package first (three years of 1040s, six years of FBARs, the certification), then prepare the corresponding state returns for any state where an obligation exists, then submit the state VDP application (if applicable) at the same time you mail the federal package. The state returns can reference the federal figures directly, which means the state preparation is usually faster and simpler than the federal side.

One exception to the “file simultaneously” rule: if you’re uncertain whether a state has a claim at all (for example, you’re not sure whether California would consider you a resident during the covered years), it’s worth resolving that question before filing, because a filed return can create a record that’s harder to unwind than a return that was never filed. The guide on what happens after streamlined filing covers the federal post-filing landscape, including the point about state exposure being a separate question the federal fix doesn’t address.

How much does adding state returns cost?

For a straightforward state return that pulls numbers from the already-prepared federal return, expect $400 to $800 per state per year. That range reflects nonresident and part-year returns, which require apportionment calculations that a full-year resident return doesn’t.

The cost depends on three variables. First, how many years need state returns: streamlined covers three federal years, but a state may have a different look-back period under its VDP, and you may owe state returns for years outside the streamlined window. Second, whether the state return is a full-year resident, part-year resident, or nonresident return (part-year and nonresident returns require income allocation and apportionment, which takes more time). Third, the complexity of the income, because a return with only wages sourced to the state is simpler than one with rental income, partnership income, or capital gains that need sourcing analysis.

For most cross-border filers going through streamlined, the state component adds 15% to 25% to the total cost of the engagement. On a streamlined package that runs $4,000 to $6,000 on the federal side, the state returns typically add $1,200 to $2,400 for three years in one state. A state VDP application, if needed, adds preparation time on top of the return work, usually a few hundred dollars for the application itself.

The cost of not adding state returns is harder to quantify but often higher. A state that discovers delinquent returns through 6103(d) data matching will assess the tax, interest, late-filing penalties, estimated tax penalties, and potentially a negligence or fraud penalty, all without the benefit of the VDP penalty waiver you could have requested proactively. On a California return with $50,000 of unreported income, the late-filing penalty alone (25% of the tax due) can exceed the entire cost of preparing and filing the return voluntarily. For a full breakdown of how streamlined costs work on the federal side, see what streamlined filing costs for Canadians.

What should I do next?

Start with two questions: did you have a connection to any income-tax state during the years covered by your streamlined filing, and does that connection create a filing obligation under that state’s rules? If the answer to both is yes, the state returns need to be part of the plan, ideally filed at the same time as the federal package.

The connections that create state obligations fall into two buckets. Residency or domicile in the state means you owed returns on your worldwide income (or at least that state’s share of it). Source income from the state, like rent from property located there or income from services performed there, means you owed a nonresident return even if you never lived there.

A few places to go deeper on the pieces that come up alongside this question:

• Streamlined Foreign Offshore Procedures, the full mechanics
• What happens after you file streamlined
• What streamlined filing costs for Canadians
• Moving from Ontario to Florida, including the state-tax upside
• Can your old state still tax your 401(k) after you leave?

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.