Does Idaho recognize 1031 exchanges?
Yes. An Idaho 1031 exchange is treated for state purposes the same way it is federally. Idaho Code 63-3004 ties the state income tax to the Internal Revenue Code as in effect on January 1, 2026, and Section 1031 is not among the listed exceptions, so gain deferred on your federal return is deferred on your Idaho return as well.
Idaho’s tax on a long-held building is already low. The flat rate is 5.3%, and individuals can deduct 60% of the capital gain from selling Idaho real property held at least 12 months, so the effective state rate is about 2.12% of a fully qualifying gain. Most of the value of an Idaho exchange is in the federal deferral, but the state rules still decide which replacement makes sense.
Federal 1031 rules that apply in Idaho
Idaho adds no deadlines of its own. You have 45 days from the sale to identify replacement property in writing and 180 days, or your tax return due date if earlier, to close on it. Both properties must be real property held for investment or business use, and a qualified intermediary must hold the proceeds so you never have access to them.
To defer all of the gain, buy a replacement of equal or greater value and reinvest all of the net cash. Cash you keep, and any debt paid off that you do not replace, is boot and is taxed by the IRS and by Idaho. Our guide to 1031 exchange rules covers identification and boot in detail, and the complete 1031 exchange guide explains how an exchange runs from listing to closing.
Does Idaho have a 1031 clawback?
No. Idaho has no clawback or tracking rule. The four states that do are California, Massachusetts, Montana and Oregon. If you sell a Boise building and buy one in Utah or Arizona, Idaho requires no annual filing to follow the deferred gain.
Exchanges into Idaho from those states carry their rules along. An owner who sells in California or Oregon and buys in Idaho still owes the departure state’s filings: California’s annual information return or Oregon’s Form OR-24, every year until the Idaho replacement is sold. Idaho does not add a filing of its own.
The 60% deduction and where you buy the replacement
Idaho’s capital gains deduction applies only to qualified property with an Idaho situs at the time of sale. For an Idaho resident, that turns the choice of replacement into a state tax decision as well as a market decision.
If you exchange an Idaho building for another Idaho building, the deferred gain stays in Idaho property. When you finally sell in a taxable sale, the 60% deduction is available again, and under Idaho Code 63-3022H(4) the time you held the old Idaho building generally counts toward the 12 months. Time held on out-of-state property you give up does not count, so after an exchange into Idaho from another state, the replacement itself must be held 12 months. If you exchange into a building in Washington or Utah and stay an Idaho resident, the later sale is of property outside Idaho, and as the statute reads, the 60% deduction would not apply. Idaho would then tax the whole gain at 5.3% instead of 40% of it.
The difference grows with the gain. On $1,000,000 of deferred gain, Idaho tax at the full 5.3% is $53,000, compared with $21,200 on 40% of it. Ask your CPA to run both scenarios before you pick a replacement market.
| Exchange path | Idaho clawback filing? | 60% deduction on the later sale? |
|---|---|---|
| Idaho property to Idaho property | No | Yes; time on the old Idaho property counts toward 12 months |
| Idaho property to out-of-state property | No | No, the replacement has no Idaho situs |
| Out-of-state property to Idaho property | No Idaho filing; departure state may require one | Yes, once the Idaho replacement itself is held 12 months |
Does Idaho regulate qualified intermediaries?
Yes. Idaho is one of nine states with rules for exchange intermediaries, along with California, Colorado, Connecticut, Maine, Nevada, Oregon, Virginia and Washington. Idaho’s rules come through the Idaho Escrow Act (Idaho Code 30-901 and following), which the Department of Finance’s Securities Bureau administers.
In Guidance Statement 2020-03-SB, issued July 1, 2020, the department said it interprets the Escrow Act as applying to 1031 qualified intermediaries, and that it has no authority to waive the Act for intermediary business that falls under it. The guidance replaced an earlier policy statement from 2007. Agency guidance does not have the force of law on its own, but it tells you how the regulator reads the statute.
- The Act applies to intermediaries doing exchange business in Idaho.
- There is a narrow exclusion: the requirements do not apply when the intermediary’s only contact with Idaho is that the replacement property is located there. Any other Idaho contact may change that.
- An intermediary covered by the Act can meet the Idaho Code 30-909 requirements either the standard way or through alternate terms the department set under the discretion in 30-909(7): a $1,000,000 fidelity bond, $250,000 of errors and omissions coverage and no surety bond.
Choosing an intermediary for an Idaho exchange
If you are selling Idaho property, ask any intermediary how it complies with the Idaho Escrow Act and to show you its bond and errors and omissions coverage in writing. When the property you sell is in Idaho, the intermediary’s contact with the state goes beyond the replacement property, and the guidance says any other Idaho contact may change the exclusion. Do not rely on it unless your intermediary’s counsel confirms it fits.
Then ask how your money will be held: in a separate account in your name or a pooled account, who must sign to move funds, and whether you will get statements. Your intermediary also cannot be someone who acted as your agent in the past two years, such as your attorney, CPA, employee or real estate broker. Our guide to choosing a 1031 qualified intermediary covers fees and contract terms.
Idaho tax on boot
Boot is recognized gain, taxed by Idaho at 5.3%, and the 60% deduction can apply to it if it is capital gain from Idaho real property held at least 12 months. That makes cash out of an Idaho exchange cheaper at the state level than in most states: $100,000 of qualifying boot carries $2,120 of Idaho tax.
The federal tax on the same boot is far larger, at 20% or 25% plus the 3.8% net investment income tax for many sellers. Plan any cash-out around the federal cost and the replacement loan, since debt you pay off and do not replace also counts as boot.
Common 1031 exchange paths for Idaho owners
Idaho to Idaho is the most tax-efficient path for a resident who plans to stay. An owner might trade several small Nampa or Caldwell properties for one larger building in Meridian, or move from Coeur d’Alene to Idaho Falls. The deferred gain keeps its Idaho situs and the deduction stays available.
Idaho to another state can make sense for an owner who plans to move or wants a larger market such as Salt Lake City, Phoenix or Spokane. It adds no Idaho filing, but it gives up the 60% deduction on the eventual sale for as long as you remain an Idaho resident.
Out-of-state to Idaho brings in owners from neighboring states and beyond. Idaho adds no clawback filing, but sellers from California and Oregon keep their home state’s tracking rule.
Worked example: an Idaho exchange with boot
A married couple in Boise sells a 20-unit building for $2,000,000 after 11 years. Selling costs are $90,000 and their adjusted basis is $700,000, so the gain is $1,210,000. The $800,000 loan is paid off at closing, leaving $1,110,000. They take $150,000 in cash and the intermediary receives $960,000.
They buy a $2,300,000 building in Meridian with the $960,000 and a new $1,340,000 loan, which is larger than the old one, so there is no debt boot. The $150,000 of cash is boot: $150,000 of gain is recognized and $1,060,000 is deferred.
Idaho tax on the boot, after the 60% deduction, is $150,000 x 40% x 5.3% = $3,180. The Idaho tax deferred is about $22,472 if the Meridian building is later sold with the deduction. Had they bought in Spokane instead and stayed Idaho residents, the same deferred gain would face about $56,180 of Idaho tax on that later sale, as the statute reads, because the deduction would not apply.
| Item | Amount |
|---|---|
| Sale price | $2,000,000 |
| Total gain | $1,210,000 |
| Net proceeds after loan payoff | $1,110,000 |
| Cash boot taken | $150,000 |
| Gain deferred | $1,060,000 |
| Idaho tax on boot | $3,180 |
| Idaho tax deferred, Idaho replacement | $22,472 |
| Idaho tax deferred, out-of-state replacement | $56,180 |
Timeline tips for an Idaho exchange
Line up replacement candidates before the sale closes. Inventory of larger apartment buildings in some Idaho markets is thin, and 45 days passes quickly.
- Sign the exchange agreement and assign the sale contract before closing.
- Ask the intermediary in writing how it complies with the Idaho Escrow Act, and get copies of its bond and insurance.
- Decide early whether the replacement will be in Idaho, since that choice affects the 60% deduction on the eventual sale.
- If you sell late in the year, file an extension so the return due date does not cut the 180 days short.
Selling an Idaho apartment building as part of an exchange
Skyline buys apartment buildings with five or more units in Idaho. We buy directly, close on your timeline, and can work inside 1031 deadlines. We work with your intermediary on the contract assignment and can set a closing date that leaves room to line up a replacement before your 45 days begin.
For the tax you would owe without an exchange, see Idaho capital gains tax on real estate. The 1031 exchange calculator runs the federal side for your own numbers.
Selling? Spread the tax with seller-carry terms
If a large tax bill is what is keeping you from selling, an installment sale may help. When you carry part of the price as a note, the gain is generally reported as you receive payments instead of all in the year of sale. Some parts of the gain, such as certain depreciation recapture, can still be due up front, so run the numbers with your CPA first.
Skyline Capital Investments buys apartment buildings with five or more units and can offer seller-carry terms, or a delayed closing that fits your 1031 timeline. Send the address and unit count and we typically respond within 48 hours. How seller financing works · How an installment sale is taxed · Seller financing calculator.
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