State Estate Tax 2026: Cliff States & Low Thresholds
Federal estate tax exemption hits $15M in 2026, but 12 states plus DC impose their own state estate tax 2026 — some with thresholds as low as $1 million. Cliff states can tax your ENTIRE estate if you exceed the limit by even one dollar.
When most Americans hear the phrase “death tax,” they think of the federal estate tax — and they stop worrying because the exemption is so high. That is a dangerous assumption. Understanding the state estate tax 2026 landscape is arguably more urgent than understanding the federal rules, because state thresholds are dramatically lower, the rules are stricter, and in several states, crossing the line by even one dollar can trigger tax on your entire estate — not just the amount over the limit.
At SW Accounting & Consulting Corp, most of our clients are based in California — a state that does not impose its own estate tax. That provides a false sense of security for affluent Californians who own vacation homes in Oregon, Washington, or Hawaii, or who plan to retire to the East Coast. Snowbirds and multi-state residents face real exposure that a California-only financial plan will miss entirely.
Federal vs. State Estate Tax 2026: The Gap That Catches Families Off Guard
At the federal level, the estate tax exemption is $13.99 million for 2025 and rises to $15 million for 2026. Rates range from 18% to 40%. According to IRS data, only about 9,000 federal estate tax returns were filed in 2023 — meaning the vast majority of Americans will never pay a cent in federal estate tax. Review the federal rules on the IRS Estate Tax page.
But here is the catch: 12 states plus DC impose their own estate tax with exemption thresholds a fraction of the federal amount:
- Connecticut, District of Columbia, Hawaii, Illinois, Maine, Maryland, Massachusetts, Minnesota, New York, Oregon, Rhode Island, Vermont, Washington
A family worth $4 million would not trigger a single dollar of federal estate tax — but that same family domiciled in Oregon, Massachusetts, Minnesota, or Illinois faces a serious state-level bill.
The “Cliff States” — Where One Extra Dollar Triggers Tax on Everything
WARNING: Cliff State Risk
In a cliff state, your estate is not just taxed on the amount that exceeds the exemption — it is taxed on the entire estate value once you cross the line. The difference between being $1 under the threshold and $1 over can literally be hundreds of thousands of dollars in tax.
- Illinois: $4 million threshold. Exceed it, and the entire estate is subject to 0.8%–16% rates.
- New York: $7.16 million threshold. If the estate exceeds 105% of exemption (~$7.52M), tax applies to the full estate, wiping out the exemption entirely.
The cliff structure is brutal precisely because traditional tax planning often involves a buffer. An estate valued at $4.2 million in Illinois does not pay tax on $200,000 — it pays tax on the full $4.2 million. Careful use of lifetime gifting, trusts, and charitable bequests can keep a family on the safe side.
Lowest-Threshold States: Where “Middle Class” Estates Get Taxed
If your clients or family live in these states, pay close attention. A home, a retirement account, and a life insurance policy can add up fast:
- Oregon — $1 million threshold (lowest in the country). Rates 10%–16%. A paid-off home in Portland plus a 401(k) will almost certainly exceed $1 million.
- Massachusetts — $2 million threshold. Rates 0.8%–16%. Recent increase from $1 million helped, but many Boston-area homeowners still get caught.
- Washington — $2.193M (deaths through 6/30/25) or $3M (7/1/25–12/31/25). Rates 10%–25% — the steepest in the nation.
- Minnesota — $3 million threshold. Rates 13%–16%.
For Californians owning a second home in Oregon or Washington — common for ski houses, coastal retreats, or family properties — the state of domicile at death becomes critical. Getting domicile wrong, or failing to document it, is a common and expensive mistake.
Maryland: The Only State With BOTH Estate AND Inheritance Tax
Maryland stands alone as the only state that imposes both an estate tax and an inheritance tax. Estate tax kicks in at $5 million with rates of 0.9%–16%. On top of that, Maryland’s inheritance tax applies a 10% levy on bequests to non-immediate family members for any gift exceeding $1,000.
Leaving money to a niece, nephew, cousin, friend, or unmarried partner in Maryland can trigger inheritance tax on top of any estate tax already paid. Planning around beneficiary classifications — or relocating domicile well in advance — is essential.
State Estate Tax 2026 — Threshold Comparison Table
| State | Threshold | Rate | Notes |
|---|---|---|---|
| Oregon | $1,000,000 | 10%–16% | Lowest in country |
| Massachusetts | $2,000,000 | 0.8%–16% | — |
| Washington | $2.193M–$3M | 10%–25% | Highest top rate |
| Minnesota | $3,000,000 | 13%–16% | — |
| Illinois | $4,000,000 | 0.8%–16% | CLIFF STATE |
| Maryland | $5,000,000 | 0.9%–16% | + Inheritance tax |
| New York | $7,160,000 | Up to 16% | CLIFF STATE at ~105% |
| Federal | $15,000,000 (2026) | 18%–40% | Only ~9,000 returns/yr |
Planning Strategies That Actually Work
Good news: with proactive planning, most of this tax exposure is manageable or avoidable. Strategies we recommend most often:
- Annual tax-free gifting. In 2025, give up to $19,000 per recipient without using lifetime exemption. A married couple: $38,000 per recipient. No limit on number of recipients.
- Irrevocable trusts. Assets placed in a properly structured trust are removed from your taxable estate. The trade-off: terms and beneficiaries generally cannot be changed after funding.
- 529 plan contributions. Contributions removed from taxable estate while benefiting grandchildren’s education. Five-year gift averaging allows supersized upfront contributions.
- Charitable donations via will/trust. Bequests to qualified charities are fully deductible and can pull an estate below a cliff threshold.
- Domicile planning. Clients with multi-state homes can document domicile in a no-estate-tax state (CA, FL, TX) — but only if done correctly with supporting evidence.
Expert Insight from Our Team
“If an individual has federal estate tax concerns, then they need to work with a team. That’s not something to DIY.” — Sam Tutko, Miser Wealth Partners. At SW Accounting, our CPAs routinely coordinate with estate planning attorneys and financial advisors for California clients with multi-state exposure. The cost of a coordinated professional team is a rounding error compared to a single planning mistake in a cliff state.
