Wyoming Estate
Tax Calculator

Wyoming does not impose a state estate tax, inheritance tax, or income tax. This combination makes Wyoming one of the most tax-favorable jurisdictions in the nation, rivaling Nevada and South Dakota for trust planning.

Wyoming has become a significant trust jurisdiction, attracting assets from high-tax states.

Wyoming's trust-friendly laws include: no state income tax on trust income, dynasty trust provisions (trusts can last 1,000 years), directed trust statutes, and domestic asset protection trust provisions. These features complement the absence of a state estate tax.

Only the federal estate tax applies to Wyoming estates. The $15 million exemption with portability and 40% top rate governs.

No state filing is needed.

Wyoming's position as a zero-state-tax jurisdiction means the only transfer tax consideration is the federal estate tax. This simplifies planning but does not eliminate the need for sophisticated estate plans, particularly given the potential TCJA sunset and Wyoming's concentration of mineral and ranch wealth.

Wyoming's ranch estates can involve millions of acres of deeded and leased land, water rights, mineral rights, and grazing permits on federal land. Each component requires separate valuation for estate tax purposes.

BLM and Forest Service grazing permits, while important to the ranching operation, are not property rights and have limited estate tax value — but their loss can significantly affect the value of the deeded ranch land.

Wyoming's energy sector (coal, natural gas, oil, wind) adds complexity to estate planning. Mineral rights in the Powder River Basin, Wind River Basin, and other formations can represent the majority of an estate's value.

Conservation easements are widely used on Wyoming ranch land, with the Wyoming Stock Growers Association and local land trusts facilitating easements that reduce estate values while preserving working ranch land. Evaluate IRC 2032A special use valuation alongside conservation easement strategies.

Model federal estate tax exposure for Wyoming estates including ranch, mineral, and energy valuations. Use this calculator free for all jurisdictions.

Because Wyoming 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 Wyoming 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 Wyoming 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 Wyoming 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 Wyoming estate tax calculator to model current and post-sunset scenarios, and review the Wyoming 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 Wyoming 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 Wyoming 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, Wyoming 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 Wyoming 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 Wyoming estate tax calculator, or find an estate planning attorney in Wyoming for personalized guidance.