Alaska Bonus Depreciation: No Individual Tax, Full Corporate Conformity.
Alaska has no individual income tax at all, so there is no Alaska return for a person to reconcile federal bonus depreciation against. But Alaska's corporate net income tax conforms to the Internal Revenue Code by rolling reference, and §168(k) is not among its carve-outs — a corporation gets the full federal bonus.
Reviewed by Cost Seg Smart Editorial Team · Last verified against AS 43.20.021 — Internal Revenue Code adopted by reference
The 30-second answer: Alaska has no individual income tax — so there is no Alaska return for a person to add back or claim federal bonus depreciation on. That answer alone would mislead anyone buying through an entity.
For a corporation, the answer flips: Alaska levies a corporate net income tax that adopts the Internal Revenue Code by rolling reference (AS 43.20.021(a)). §168 sits inside the adopted range, and none of Alaska's carve-outs touch depreciation — a corporation claims the full federal bonus at the Alaska level too.
On a representative Alaska single-family rental (the single-family rental band we publish, 9–32% of depreciable basis reclassified, 16% representative), the reclassified components alone generate an estimated $18K–$165K of federal Year-1 depreciation — roughly $6,660–$61,570 of federal Year-1 tax savings for an individual at the 37% top bracket, or $3,780–$34,940 at the 21% flat federal corporate rate, with no Alaska-level reduction either way.
Alaska's real split: individual vs. corporate, not "no tax vs. tax"
Alaska is often bucketed as a simple "no tax" state, and for an individual, that is exactly right — AS 43.20.012(a)(1) states plainly that the tax imposed by that chapter does not apply to an individual. There is no Alaska Form 1040 equivalent, no add-back, and no reconciliation of any kind for a person holding rental property directly or through a pass-through.
But "Alaska has no income tax" stops being true the moment the taxpayer is a corporation. Alaska levies a real corporate net income tax, and AS 43.20.021(a) adopts 26 U.S.C. 1-1399 as amended — the Internal Revenue Code, on a rolling basis — as the starting point for Alaska corporate taxable income. Section 168, which houses bonus depreciation, is squarely inside that adopted range.
Alaska does carve certain things back out at AS 43.20.021, subsections (b) through (j): different treatment for capital gains, particular tax credits, and the corporate alternative minimum tax, among others. None of those carve-outs mention depreciation, and none touch §168(k). A corporation therefore claims exactly the same federal bonus depreciation deduction on its Alaska return that it claimed federally — full conformity, not a partial one.
The practical takeaway: if you are asking this question because you own Alaska rental property personally, the "no income tax" answer is correct and you can stop there. If you are asking because you hold — or are considering holding — Alaska real estate through a corporation (including an LLC that has elected corporate tax treatment), lead with the corporate answer instead: Alaska conforms in full, by rolling reference, with no depreciation carve-out.
Federal vs Alaska, Side by Side
For cost-segregation-reclassified components, split by taxpayer type:
| Taxpayer | Federal (IRC) | Alaska |
|---|---|---|
| Individual (direct ownership or pass-through) | 100% may apply to qualified property acquired and placed in service after January 19, 2025, subject to §168(k) eligibility, related-party/prior-use, binding-contract, and election rules | No Alaska return exists. The tax imposed under AS 43.20 does not apply to an individual (AS 43.20.012(a)(1)) |
| Corporation | Same federal §168(k) rules as above | Full conformity. IRC adopted by rolling reference (AS 43.20.021(a)); no depreciation carve-out among subsections (b)-(j) |
| Federal usability of the deduction | Subject to passive activity, at-risk, basis, and business-interest limits (individual); ordinary corporate limits (corporate) | Same federal limits govern usability; Alaska adds no separate limit for either taxpayer type |
| MACRS asset class lives | 5 / 7 / 15 / 27.5 / 39 yr per Rev. Proc. 87-56 | Not applicable to an individual; used unchanged on a corporate return |
Sources: AS 43.20.012 and AS 43.20.021, IRC §168(k). Federal bonus figures reflect current law; eligibility depends on acquisition and placed-in-service dates and elections.
Illustrative numbers: an Alaska single-family rental
Using the single-family residential (SFR) band we publish — 9–32% of depreciable basis reclassified into 5/7/15-year property, 16% representative — on a property priced between $250,000 and $650,000, with a 20% residential land allocation, and 100% federal bonus depreciation for eligible components under current law:
| Line item | Federal | Alaska (individual) | Alaska (corporation) |
|---|---|---|---|
| Purchase price band | $250,000–$650,000 | Same property | Same property |
| Depreciable basis (20% land allocation) | $200,000–$520,000 | No Alaska return to compute one on | Same basis, adopted by reference |
| Reclassified to 5/7/15-yr (9–32% of basis) | $18K–$165K | Not applicable | Full amount conforms |
| Marginal/flat tax rate | Up to 37% (individual); 21% flat (corporate) | 0% — no individual income tax | Alaska corporate net income tax rate applies on top |
| Illustrative Year-1 federal tax savings on reclassified components | ~$6,660–$61,570 individual (37% × $18K–$165K); ~$3,780–$34,940 corporate (21% × $18K–$165K) | No Alaska-level add-back or reduction | No Alaska-level add-back; conforms in full |
Figures are illustrative and use the site's published SFR reclassification band; your result depends on your basis, land allocation, bracket, entity structure, component mix, and eligibility. Whether the full federal deduction is usable in the current year still depends on your passive-loss, at-risk, basis, and business-interest situation (individual) or ordinary corporate limitations.
See a sample cost segregation report
Look at exactly what your Alaska study delivers: the component-by-component 5/7/15-year schedule, the Form 4562-ready numbers, and the documentation your CPA files. Real reports are our best answer to "is this legit?"
Forms your CPA files for an Alaska property
The federal-side paperwork is the same for every Alaska property owner; what differs is whether there is a second, state-level filing at all:
- Federal Form 4562: depreciation and amortization, including the §168(k) bonus deduction on eligible reclassified components. Flows to Schedule E (rental), Schedule C (active business), or the corporate return.
- Schedule E (or Schedule C): for an individual, the accelerated federal deduction reduces federal taxable income in Year 1, subject to the federal passive-loss, at-risk, basis, and business-interest limits. There is no Alaska individual return to reconcile.
- Alaska corporate net income tax return (corporations only): federal taxable income, already reflecting the §168(k) bonus, flows through by rolling conformity — no separate Alaska depreciation schedule is computed.
- Form 3115 §481(a) section: included only if this is a federal lookback method change on a property placed in service in a prior year (see below).
The reclassified schedule is the same engineered output either way. For an individual, it is used exactly once — on the federal return. For a corporation, it is used twice, identically, because Alaska conforms in full.
Form 3115 lookback on an Alaska property
If the property was placed in service in a prior tax year and depreciation was reported using a non-segregated method, a federal Form 3115 (Application for Change in Accounting Method) may allow a current-year §481(a) catch-up adjustment for the accelerated depreciation you missed, generally without amending prior returns. This is often the single biggest acceleration mechanism in cost segregation. Any catch-up dollars are illustrative and depend on placed-in-service date, prior depreciation claimed, bonus eligibility, land allocation, and component mix.
For an individual, the catch-up is a federal-only calculation with no Alaska return to restate. For a corporation, the catch-up year's bonus-eligible amount flows through to the Alaska corporate return the same way an ordinary Year-1 bonus would, by the same rolling conformity.
See our full Form 3115 cost segregation guide for federal mechanics, partnership and LLC pass-through treatment, and timing rules.
Should you do cost segregation in Alaska?
Yes, for essentially every ownership structure — the reasoning just differs by taxpayer type:
- If you own the property personally, the full federal Year-1 bonus is what you get — there is no Alaska add-back because there is no Alaska individual income tax at all. How much you use in the current year still depends on your passive-loss, at-risk, basis, and business-interest situation.
- If you own the property through a corporation, Alaska conforms to the same federal bonus by rolling reference, with no depreciation carve-out among its listed exceptions. There is no state-level reduction to plan around.
- The Form 3115 lookback still captures missed federal years for either ownership structure, if the property was placed in service in a prior year and depreciated without cost segregation.
The one thing worth confirming with your CPA before relying on either answer: how the entity holding the property is actually taxed. A pass-through LLC gets the no-individual-tax answer; an LLC that has elected corporate treatment, or a true corporation, gets the rolling-conformity answer instead.
Frequently asked
Does Alaska allow bonus depreciation?
It depends entirely on whether you hold the property as an individual or through a corporation, and the answer for each is opposite in flavor. Alaska has no individual income tax at all, so there is no Alaska return for an individual to add back or claim federal §168(k) bonus depreciation on — the question doesn't apply. Alaska DOES levy a corporate net income tax, and it conforms to federal bonus depreciation by rolling reference: a corporation gets the full federal bonus at the Alaska level too.
I own Alaska rental property as an individual — does bonus depreciation even matter to me?
Yes, at the federal level, just not at the Alaska level. Alaska Statute 43.20.012(a)(1) provides that the tax imposed by that chapter does not apply to an individual, which means there is no Alaska income tax return at all for a person holding property directly or through a pass-through entity taxed at the individual level. You still claim the full federal §168(k) bonus depreciation on your federal return (100% may apply to qualified property acquired and placed in service after January 19, 2025, subject to eligibility, related-party/prior-use, binding-contract, and election rules) — Alaska simply has no parallel calculation to reconcile it against.
Does an Alaska corporation get the federal bonus depreciation deduction?
Yes, in full, and this is the answer most "Alaska has no income tax" summaries omit. Alaska adopts 26 U.S.C. 1-1399 as amended by rolling reference under AS 43.20.021(a) — federal taxable income, computed under current federal law, flows into the Alaska corporate net income tax base. Section 168, which houses bonus depreciation, sits inside that adopted range. The Alaska carve-outs at AS 43.20.021, subsections (b) through (j), touch rates, capital gains treatment, certain credits and the alternative minimum tax — none of them touch depreciation. So a corporation claims the same federal bonus at the Alaska level that it claims federally.
If I hold Alaska property through an LLC, which answer applies to me?
It depends on how the LLC is taxed, not on the fact that it's an LLC. A single-member LLC or a multi-member LLC taxed as a partnership is a pass-through for federal purposes, and its income is reported on the individual owner's return — so the no-individual-income-tax answer applies, and there is no Alaska add-back to worry about. An LLC that has elected corporate taxation (or a true C-corporation) is taxed under Alaska's corporate net income tax and gets the rolling-reference conformity answer instead. Confirm the entity's federal tax classification before assuming either answer.
Is cost segregation still worth it in Alaska?
Yes, for essentially every Alaska property owner, though the reason differs by ownership structure. An individual investor claims the full federal Year-1 bonus with zero Alaska-level friction, because there is no Alaska income tax to interact with it at all. A corporation claims the same full federal bonus and Alaska conforms to it directly by rolling reference — no add-back, no recomputation. Whether the full federal deduction is usable in the current year still depends on federal passive-activity, at-risk, basis, and business-interest limits (and, for a corporation, ordinary corporate loss and consolidation rules).
Can I use Form 3115 on an Alaska property I bought years ago?
Often, yes, at the federal level. If the property was placed in service in a prior tax year and depreciation was reported using a non-segregated method, a federal Form 3115 (Application for Change in Accounting Method) may allow a current-year §481(a) catch-up for the accelerated depreciation you missed, generally without amending prior returns. Any catch-up dollars are illustrative and depend on placed-in-service date, prior depreciation, bonus eligibility, land allocation, and component mix. Because Alaska either has no individual return to file against, or conforms in full for a corporation, the Alaska-level treatment of the catch-up follows the same individual/corporate split described above.
What does an Alaska cost segregation study rely on for its numbers?
The study reclassifies building components into IRS-recognized MACRS class lives (5, 7, and 15-year) per Rev. Proc. 87-56, using an engineering-based methodology that follows the IRS Cost Segregation Audit Techniques Guide (Publication 5653). The reclassified components may then qualify for federal §168(k) bonus depreciation on the federal return (100% for qualified property acquired and placed in service after January 19, 2025, subject to eligibility and election rules). Nothing about the study changes because the property sits in Alaska; what changes is that an individual owner has no Alaska return to reconcile it against, while an Alaska corporation claims the same bonus again on its state return by rolling conformity. The engine ships our own calibrated, nationally-recognized construction cost data.
Related guides
- Bonus depreciation by state: overview
- All 50 states: conformity reference table
- Washington bonus depreciation (no income tax, B&O caveats)
- Wyoming bonus depreciation (no income tax, no gross-receipts tax)
- Texas bonus depreciation (no state income tax)
- Form 3115 cost segregation lookback: §481(a) mechanics
- What is cost segregation: the full primer
- Sample cost segregation reports