Federal 1031 treatment is the easy part
Most 1031 conversations center on federal rules. The 45-day window. The 180-day deadline. The QI requirement. The like-kind definition. These are the easy part.
State tax is where investors get blindsided, often years after they thought the exchange was complete. The IRS defers your federal gain. Your state may or may not follow. Some states defer in parallel. A few claw the deferred gain back when you sell the replacement, even if it is in a different state. A handful of states historically did not recognize 1031 at all.
For a PM-managed investor with properties in multiple states, state conformity can be the difference between a clean deferral and a $40,000 tax bill you did not budget for.
I have watched this go wrong. An investor sells a California rental for $900,000, exchanges into Texas, moves to Nevada three years later, sells Texas in year seven, and gets a California Form 3840 non-compliance notice plus a tax bill from the Franchise Tax Board. The federal exchange worked. The state exchange did not.
The “clawback” states: California, Oregon, Montana
A clawback state treats 1031 deferral as temporary, recaptured when the replacement is eventually sold out of state.
The gain was sourced to the clawback state (the relinquished property was there). The state defers as long as you stay in a qualifying exchange. Sell the out-of-state replacement in a taxable transaction and the state wants its original tax back.
California: Revenue and Taxation Code Section 18032, enacted 2014. Exchange California property into non-California replacement and you must file Form FTB 3840 every year until the replacement is either exchanged back into California or sold taxably. Missing a year can trigger a $1,000 penalty plus eventual assessment of the deferred tax.
Oregon: Similar for exchanges on or after January 1, 2018. Form OR-24 annually. Top rate around 9.9%.
Montana: Similar with annual Form MT CLW.
Verify current law before any cross-state exchange.
How clawback works (the sourcing rule with real example)
You own a duplex in Oakland. Bought 2010 for $400,000. Today worth $900,000, adjusted basis $320,000. Deferred gain: $580,000.
You 1031 exchange into an Austin fourplex worth $900,000 in 2024.
In 2031 you sell Austin for $1.3M in a taxable sale.
Federal: Gain roughly $980,000. Capital gain plus recapture assessed and paid.
California clawback: California taxes the portion originally sourced to California. Asserts tax on at least the original $580,000 at California rates (top 13.3%). Roughly $77,000 of California tax in 2031 on a property you have not owned in California since 2024.
California sources the deferred gain back to California regardless of where the replacement is or where you live. Miss the annual FTB 3840 filings and the FTB adds penalties and interest back to the exchange year.
Clawback does not trigger if you stay in the chain forever (swap till you drop), exchange back into California property, or die and the property gets a step-up.
Non-conforming states: where state tax hits you even without clawback (PA is a surprise)
Some states historically did not conform to federal 1031 at all. The exchange was tax-deferred federally but fully taxable for state purposes in the year of the exchange.
Pennsylvania: The one that surprises people. Pennsylvania’s PIT historically did not recognize Section 1031 for individual investors. Act 53 of 2022 aligned Pennsylvania with federal 1031 for tax years beginning after December 31, 2022. Pre-2023 exchanges stay under the old rules.
New Jersey: Conforms but has its own reporting. Capital gains taxed as ordinary income.
No income tax: Texas, Florida, Tennessee, Nevada, South Dakota, Washington, Wyoming, Alaska, New Hampshire. Part of why investors relocate before large liquidity events.
Clean conformity: Most others (Colorado, Arizona, Georgia, North Carolina, Virginia, Ohio, Illinois).
Out-of-state exchange mechanics (state A to state B)
Sell in State A and exchange into State B and you interact with up to three tax systems: A, B, and residence.
State A (relinquished): Primary sourcing. If A conforms, gain defers. If A is a clawback state, recaptures later.
State B (replacement): No tax at acquisition. Future income and sale taxed by B.
State of residence: Taxes income worldwide, credits tax paid to other states up to your resident rate.
Nightmare scenario: California resident, sell California, exchange into Texas, move to Florida. Five years later sell Texas. Texas and Florida do not tax you. California clawback asserts on the originally deferred gain. You pay California 13.3% on a property you no longer own in a state you no longer live in.
Clean scenario: Arizona resident sells Arizona, exchanges into Colorado. Both conform. Later sells Colorado while living in Arizona. Colorado taxes as non-resident. Arizona taxes as resident with credit for Colorado tax paid.
Residency matters: how moving states affects pending clawback liability
California to Texas exchange in 2024. You move to Nevada in 2026. You sell Texas in 2029.
You would think: I live in Nevada, I own Texas property, neither has income tax, I owe nothing. Wrong.
California’s clawback statute sources the deferred gain back to California regardless of current residency. Leaving California does not release you. Annual FTB 3840 filings continue after you move.
This breaks the assumption that state income tax follows residency. For clawback states, state tax follows the originally sourced gain, not your current address.
Domicile versus residency: California is aggressive about domicile audits. Buying a Nevada house and spending more than half the year there does not automatically end California domicile, especially if you keep California ties. Relocating mid-chain requires disciplined domicile planning.
The state conformity cheat sheet (quick reference by state)
Snapshot as of early 2026. Verify with a current tax professional.
Full conformity (no clawback): Colorado, Arizona, Georgia, North Carolina, Virginia, Ohio, Illinois, Michigan, Wisconsin, Minnesota, Maryland, Massachusetts, New York, New Jersey (with reporting quirks), and most others.
Clawback states:
- California (Form FTB 3840, annual)
- Oregon (Form OR-24, annual, post-2018)
- Montana (Form MT CLW, annual)
Historically non-conforming: Pennsylvania (conformed for tax years beginning after December 31, 2022).
No state income tax: Texas, Florida, Tennessee, Nevada, South Dakota, Washington, Wyoming, Alaska, New Hampshire.
Confirm every state in your exchange with a CPA licensed in the relevant jurisdictions.
When to involve a multi-state CPA before you start the exchange
The biggest mistake is bringing in the CPA after the exchange. Involve them before you sign the purchase agreement. Ideally before you list.
Planning changes replacement selection. Exchanging out of California toward swap till you drop? Exchanging into California instead of Texas may beat the clawback entirely.
Annual filings need front-end setup. Missing the first FTB 3840 creates penalty exposure immediately.
Residency planning has long lead times. Domicile typically takes 6 to 24 months.
State basis differs from federal. PA’s historical non-conformity, CA’s clawback sourcing, and OR’s OR-24 all require separate state basis records.
Filings multiply. Four states of property means four non-resident returns plus your resident return.
State tax exposure on a mis-planned exchange can easily exceed the CPA’s annual fee by 50x.
Documentation the state will want 2-10 years after the exchange
State audits can happen well after federal audits close. California has a four-year statute of limitations, extendable indefinitely if FTB 3840 is not filed.
Keep:
- Every Form 8824: permanently while the chain is alive, then seven years after.
- Every state form: FTB 3840, OR-24, MT CLW. Each year required, plus seven after.
- QI closing statements for every relinquished and replacement.
- 45-day identification letters.
- Settlement statements for every closing.
- Basis computations: federal and state basis carried forward.
- Annual filing confirmations.
The hard part is keeping this organized across a multi-state portfolio where different CPAs and QIs handled different exchanges. I have watched investors lose the paper trail on a 2012 exchange when the QI went out of business, the CPA retired, and the settlement statements got cleaned out during a move.
Tools like DoorVault help by keeping property-level records (leases, PM statements, loan documents, capital improvement receipts) in one system, which is also the right place to attach exchange documentation and annual filings. When a state asks about a 2024 California exchange in 2031, you want the answer to be “here is the closing folder, the Form 8824, every FTB 3840, and the basis worksheet” delivered inside of an hour.
Key takeaways
- Federal conformity is not state conformity.
- Clawback states (California, Oregon, Montana) recapture deferred gain when you sell the replacement, even if it is out of state.
- Pennsylvania’s historical non-conformity bit a lot of investors. Pre-2023 exchanges stay under the old rules.
- Moving to a no-tax state does not release clawback liability on prior exchanges.
- Death eliminates clawback liability through step-up.
- Multi-state CPA involvement belongs at the front end.
- Documentation must survive the life of the chain plus seven years.
State conformity is the fastest way for a clean federal exchange to produce a six-figure state tax bill five years later. Plan for it upfront and you never defuse it.
Related 1031 resources
- Complete 1031 guide: doorvault.app/pillar/1031-exchange
- 45-day identification rules: blog.doorvault.app/1031-exchange-45-day-identification-rules
- Scaling a rental portfolio with 1031s: blog.doorvault.app/1031-exchange-scale-rental-portfolio
- 1031 timer tool: doorvault.app/tools/1031-exchange-timer
- For 1031 investors: doorvault.app/for/1031-exchange-investors
DoorVault helps PM-managed investors verify owner statements, track portfolio performance, and prepare taxes with AI-powered intelligence. When a state tax authority asks for clawback documentation on a 2024 exchange seven years later, DoorVault keeps your closing statements, annual state filings, and basis worksheets in one organized archive so the answer is always inside of an hour. Start free at doorvault.app.
