Hawaii estate tax, inheritance tax & probate costs

What the Hawaii Estate Data Reveals

Hawaii layers a state estate tax on top of the federal regime, exemption of $5,490,000 with rates from 10% to 20%, and spousal portability is not recognized. For estates above this state threshold but below the permanent federal $15M exemption, state law is the binding constraint, which is exactly the bracket most affluent households fall into. There is no separate inheritance tax, so beneficiaries receive their share without a second state-level deduction at distribution.

IRS Statistics of Income data show 52 federal estate tax returns filed by Hawaii residents in the most recent available year (filing year 2023), reporting $1.04 billion in combined gross estate value. Net federal estate tax paid totaled $0.07 billion that year. Across the multi-year IRS SOI series above, Hawaii averages roughly 34 taxable filings per year, with an effective federal rate on reported gross estates of about 6.4%.

Probate itself typically runs 9–18 months in Hawaii (roughly 14 months on average), with court filing fees of $35–$300. Attorney compensation is set by statute at approximately 4% of the estate, which is a material fixed cost even for uncontested estates. Hawaii does offer a simplified small-estate track for estates under $100,000, which most families use to bypass full formal probate. Because Hawaii has adopted the Uniform Probate Code (since 1996), procedures are broadly standardized across counties. As a common-law (separate property) state, Hawaii treats each spouse's holdings individually unless jointly titled, so titling choices drive what actually enters the probate estate.