How Probate Works After a Death in Hawaii

Hawaii’s estate tax is genuinely distinctive - both for how high it can go and for a rare feature that works in families’ favor.

Where is probate handled in Hawaii?

Probate is handled through Circuit Court, in one of Hawaii’s four judicial circuits: First (Oahu), Second (Maui), Third (Big Island), and Fifth (Kauai). Hawaii’s adoption of the Uniform Probate Code allows informal probate - handled by the registrar without a hearing - for many uncontested estates.

What is the small estate affidavit threshold?

Hawaii’s small estate affidavit is available when the decedent’s gross estate, excluding motor vehicles, does not exceed $100,000. Vehicles can be transferred separately regardless of value, and real property almost always triggers probate on its own. See our companion piece explaining this process in more depth.

Why is Hawaii’s estate tax considered notable?

Hawaii is one of only 12 states (plus DC) that imposes a state-level estate tax. The exemption is approximately $5.49 million per person - well below the federal $15 million threshold - with rates ranging from 10% to 20%, one of the highest top rates among states that impose this tax at all.

Here’s the good news: Hawaii’s estate tax is portable between spouses - a genuinely rare feature. If the first spouse doesn’t use their full exemption, the surviving spouse can claim the unused portion, effectively protecting up to about $10.98 million combined. Given how a single-family home on Oahu can easily exceed $1 million, this threshold isn’t as distant as it might sound for some families, making the portability feature genuinely valuable. While Hawaii has an estate tax, it does not have a separate inheritance tax - individual beneficiaries don’t owe a separate state tax on what they receive.

What should I do next?

Check the estate’s gross value (excluding vehicles) against the $100,000 small estate threshold before assuming full probate is necessary. Given real estate on Oahu and other islands can push an estate’s value up quickly, it’s also worth having a rough sense of whether Hawaii’s estate tax exemption could apply - a CPA familiar with Hawaii’s rules can confirm.

Add this to your Final Day Plan: whether you and your spouse have discussed using Hawaii’s portability feature for the estate tax exemption - it’s a genuinely valuable option most families don’t realize they need to actively elect.

Hawaii law can change, and specific circumstances vary considerably. This is general educational information, not legal advice - consult a Hawaii-licensed attorney or CPA for guidance specific to your situation.