Delaware Estate
Tax Calculator

Delaware does not currently impose a state estate tax. The state repealed its estate tax effective January 1, 2018, after briefly imposing one with a $5.49 million exemption.

Delaware estates are now subject only to the federal estate tax.

Despite the absence of an estate tax, Delaware remains one of the most important trust jurisdictions in the nation. The Delaware trust code is among the most flexible and well-developed, making it a preferred situs for dynasty trusts, directed trusts, and asset protection trusts used in estate planning nationwide.

Delaware residents face only the federal estate tax with its **$15 million exemption and 40%** top rate. Portability between spouses is available.

No state-level estate tax return is required.

Delaware's absence of a state estate tax, combined with its trust-friendly laws and relatively low income tax rates, makes it a net exporter of trust services. Families across the country establish Delaware trusts to benefit from the combination of no state estate tax on trust assets and Delaware's favorable trust administration laws.

Delaware's directed trust statute (12 Del. C.

3313A) allows trust creators to separate investment, distribution, and administrative functions among different fiduciaries. That structure can help when the trust creator wants family involvement in investment decisions while a corporate trustee handles administration.

Delaware dynasty trusts can last in perpetuity (the state abolished the Rule Against Perpetuities for personal property trusts), allowing multi-generational wealth transfer free from estate tax at each generation. Combined with no state estate tax and favorable GST tax planning, Delaware trusts are a centerpiece of sophisticated estate plans nationwide.

Evaluate federal estate tax exposure for Delaware estates and assess whether Delaware trust structures can reduce the taxable estate. Use this calculator free for all states.

Because Delaware does not impose a state estate tax, the federal estate tax is the only transfer tax layer. The current federal exemption of $15 million per individual (2025) shelters the vast majority of estates.

However, estates that exceed this threshold face a top marginal rate of 40%, making federal planning essential for high-net-worth Delaware residents.

The Tax Cuts and Jobs Act (TCJA) doubled the federal exemption effective 2018, but this increase is scheduled to sunset after 2025. If Congress does not act, the exemption will revert to approximately $7 million (adjusted for inflation).

For Delaware residents with estates between $7 million and $15 million, this sunset creates a planning window: transfers made now under the higher exemption will not be clawed back, even if the exemption later decreases.

The absence of a state estate tax in Delaware simplifies the analysis — there is no gap between state and federal exemptions to navigate, no separate state return to file, and no risk of double taxation. However, this also means there is no state-level deduction to offset federal liability.

Federal planning tools — marital deductions, charitable deductions, and the unified credit — carry the full weight of estate tax mitigation. Use the Delaware estate tax calculator to model current and post-sunset scenarios, and review the Delaware probate cost calculator to understand full settlement costs.

Federal portability allows a surviving spouse to inherit the deceased spouse's unused estate tax exclusion (DSUE), effectively doubling the available federal exemption to $30 million for married couples. Electing portability requires filing Form 706 for the first-to-die spouse, even if no federal estate tax is owed — a step that is frequently overlooked when no tax appears to be due.

Because Delaware does not impose a state estate tax, there is no state-level portability concern. The federal election is the only one that matters, and it applies automatically to the surviving spouse's estate once made.

This is simpler than in estate-tax states, where the lack of state portability forces the use of bypass trusts to preserve both exemptions.

Despite this simplicity, portability has limitations. The DSUE amount is not indexed for inflation — it locks in at the value of the first spouse's unused exemption at the date of death.

If the surviving spouse remarries and the new spouse dies, the DSUE from the first spouse is lost. For Delaware families with significant wealth, bypass trusts may still be preferable to portability because they provide asset protection, generation-skipping benefits, and inflation-adjusted growth outside the surviving spouse's taxable estate.

Use the executor fee calculator and probate cost calculator to understand the full administration picture when comparing trust structures.

Without a state estate tax, Delaware residents focus planning efforts on the federal layer. The current $15 million exemption provides substantial shelter, but the scheduled TCJA sunset makes it prudent to accelerate planning.

Irrevocable trusts — including ILITs, SLATs, and QPRTs — remove assets from the taxable estate permanently. Once transferred, these assets and their future appreciation are outside the federal estate, regardless of future exemption changes.

Annual exclusion gifts of $19,000 per recipient (2025) remain the simplest estate reduction tool. Married couples can jointly gift $38,000 per recipient through gift-splitting.

Over a decade, a family gifting to four beneficiaries annually removes $1.44 million from the estate with no gift tax return required. Charitable deductions — whether through outright bequests, donor-advised funds, or charitable trusts — further reduce the taxable estate while supporting philanthropic goals.

GRATs and GRUTs (grantor retained unitrusts) transfer appreciation to beneficiaries at minimal transfer tax cost. For Delaware residents holding concentrated stock positions or rapidly appreciating assets, these vehicles are particularly efficient.

Family limited partnerships and LLCs may provide valuation discounts for gift and estate tax purposes, though the IRS scrutinizes these structures closely. Professional valuation and proper documentation are essential.

Model your federal exposure with the Delaware estate tax calculator, or find an estate planning attorney in Delaware for personalized guidance.