State Conformity to §168(k): CA, NY, NJ Non-Conformity Table

How California, New York, and New Jersey decouple from federal bonus depreciation, with worked state-tax addbacks and a quick reference table.

State Conformity to §168(k): CA, NY, NJ Non-Conformity Table

What you'll learn. Why state-level conformity to IRC §168(k) varies dramatically, how California, New York, and New Jersey decouple from federal bonus depreciation, and the addback math for a property owner whose federal return shows $200,000 of bonus deduction. This complements the OBBBA hero article by quantifying the state-side haircut on the federal year-1 number.

Why state conformity matters

A cost-seg feasibility estimate computes the federal year-1 deduction. State income tax (where applicable) takes the federal deduction as a starting point and then adjusts. Each state independently chooses whether to:

1. 1. Conform to the federal §168(k) bonus rules — the deduction flows through directly. Most "rolling conformity" states fall here (TX has no income tax, so this is moot for Texas residents; FL conforms; CO conforms with limits).
2. 2. Decouple entirely — bonus depreciation is added back, and the state requires straight-MACRS or its own depreciation method. CA, NY, NJ, and several others fall here.
3. 3. Partially conform — bonus is allowed at a different percentage, or only for certain property classes. Pennsylvania and Massachusetts have historically been in this bucket.

The federal cost-seg deduction does not change. The state filing changes — sometimes substantially.

California — full decouple under R&TC §17250 / §24356

California has not conformed to §168(k) since the original 2002 enactment. Cal. Rev. & Tax. Code §17250 (personal income tax) and §24356 (corporation tax) require bonus depreciation to be added back for California purposes. The taxpayer then computes California depreciation under California's own MACRS-equivalent rules — which for residential rental is straight-line over 27.5 years (matching federal) but without any §168(k) acceleration.

Worked example. A California-resident taxpayer with a $200,000 federal bonus deduction:

• Federal taxable income reduction: $200,000
• California taxable income: federal AGI + $200,000 addback - allowed CA depreciation on the same assets
• Allowed CA depreciation on $200,000 of accelerable property (assume mostly 5-year): MACRS year-1 half-year ~$40,000
• Net CA addback: $160,000
• At California's 9.3% bracket: ~$14,880 of California state tax effect lost in year 1

The CA basis schedule continues separately. In years 2 through 6, the CA-allowed MACRS catches up — the lifetime deduction is identical. But the NPV swing on a 9.3% state rate is meaningful for a CA-resident investor. Form FTB 3885A (individuals) or FTB 3885 (corporations) tracks the federal-vs-CA basis difference.

New York — partial decouple under Tax Law §208(9)(b)(17)

New York's State Tax Law §208(9)(b)(17) and §612(b)(8) decouple from §168(k) for property placed in service in tax years beginning after May 31, 2003 — with an exception for property used predominantly in resurgence zones, empire zones, or in agriculture/manufacturing (where conformity is preserved). For a typical residential or short-term rental investor, the decoupling applies in full.

Mechanics on the same $200,000 bonus deduction:

• NY addback: $200,000 (Form IT-225 modification S-104 for individuals; CT-3.4 for corporations)
• Allowed NY depreciation: federal MACRS without bonus — same as the California pattern
• Net NY addback first year: ~$160,000
• At NY's top 10.9% rate (city residents add another ~3.876%): ~$17,440 of state tax effect lost for non-NYC; ~$23,650 for NYC residents

NY also requires a separate NY-basis depreciation schedule carried on Form IT-399 (depreciation schedule for IRC §168 property). This is a multi-decade tracking obligation for any property the taxpayer holds.

New Jersey — full decouple under N.J.S.A. §54A:5-1

New Jersey decouples from §168(k) in full under N.J.S.A. §54A:5-1 (gross income tax) and §54:10A-4(k)(2)(F) (corporation business tax). Same pattern as CA and NY: federal bonus is added back, NJ-allowed depreciation is computed separately. NJ Form GIT-DEP tracks the basis difference.

NJ rates max at 10.75% for individuals; 9.0% for the corporate business tax. On the $200,000 example: ~$17,200 of NJ tax effect lost in year 1 (with catch-up over the recovery period).

Quick reference table

| State | §168(k) conformity | Addback form | Top individual rate | Notes | |---|---|---|---|---| | Texas | N/A — no individual income tax | — | 0% | Most TX investors face no state-side haircut | | Florida | Conforms (corporate only — no individual income tax) | F-1120 | 0% individual | Corporate filers conform | | California | Decouples in full (R&TC §17250 / §24356) | FTB 3885A / FTB 3885 | 13.3% (top + mental-health) | Largest year-1 swing of the major non-conformity states | | New York | Decouples in full (Tax Law §208(9)(b)(17), §612(b)(8)) | IT-225 / IT-399 | 10.9% state + 3.876% NYC | Resurgence-zone exception narrowly applies | | New Jersey | Decouples in full (N.J.S.A. §54A:5-1) | GIT-DEP | 10.75% | Multi-year tracking on GIT-DEP | | Pennsylvania | Decoupled fully for years 2017+ (Act 72-2018) | RCT-101 | 3.07% | Bonus addback then PA-MACRS | | Massachusetts | Decoupled (G.L. c. 62, §6(s)) | Schedule B | 9% (millionaire surtax) | Personal income tax decoupled; CIT partially conforms | | Colorado | Conforms with limit | DR 0104AD | 4.4% | Conforms but caps | | North Carolina | Decoupled (G.S. §105-130.5(a)(15a)) | NC-K-1 | 4.5% | Add back, then 5-year ratable subtract |

The list above is partial. Approximately 20 states decouple from §168(k) in some form. The state effect on a cost-seg estimate is rate-driven — the higher the state's top marginal rate, the larger the year-1 NPV swing. CA, NY, and NJ together cover the highest-rate, full-decoupling states for individual investors.

Where Texas residents land

Texas has no individual income tax under Tex. Const. Art. VIII §24-a. A Texas-resident investor who owns a Texas property faces zero state-side haircut. The federal bonus deduction lands in full. This is a structural advantage for Texas-domiciled investors that is sometimes overlooked when comparing cost-seg outcomes against CA-resident peers — the same federal study can produce ~10–13% higher after-tax NPV for the Texas investor purely due to state non-conformity in CA / NY / NJ.

A Texas-domiciled investor with out-of-state property may still file in the property-state, in which case the property-state's conformity rules apply. A CA rental held by a TX resident still requires CA Form 540NR with the CA addback.

Where the screening tool fits

Our feasibility estimator computes the federal year-1 tax effect only. The state-side haircut is left to the practitioner to compute on the actual return. For CA, NY, or NJ-resident investors (or out-of-state property owners filing in those states), the federal year-1 number from the engine should be discounted by the state-rate × bonus-portion of the federal deduction to approximate the all-in year-1 cash effect.

Screen a 2026 acquisition before applying the state-conformity haircut →

Sources

• IRC §168(k) — Bonus depreciation, as amended by OBBBA §70301
• Cal. Rev. & Tax. Code §17250 (PIT) and §24356 (CIT)
• N.Y. Tax Law §208(9)(b)(17) (CIT) and §612(b)(8) (PIT)
• N.J.S.A. §54A:5-1 (GIT) and §54:10A-4(k)(2)(F) (CBT)
• 72 Pa. Stat. §401(3)1.(p) — PA Act 72-2018
• Mass. G.L. c. 62, §6(s) — Massachusetts decoupling
• Tex. Const. Art. VIII §24-a — Texas no-income-tax provision
• Federation of Tax Administrators (FTA) — State Conformity Tracker (updated annually)

Disclaimer. This tutorial describes general federal tax concepts. TaxProtestTx (Nought Labs LLC) is a feasibility-screening tool, not tax advice or a cost segregation study. Calculator output cannot be relied on under Treasury Circular 230. Consult a qualified CPA, EA, or attorney before filing. Results are not guaranteed.