For high-net-worth individuals, the goal of tax mitigation is to move as much wealth as possible to the next generation with the lowest possible "tax friction." This involves a combination of lifetime gifting, specialized trust structures, and strategic asset valuation. As Derek Thain of Fidelity Wealth Management notes: "A successful estate plan means giving what you have to who you want, when you want, the way you want, and at the most reasonable cost" .

Gift Splitting: Doubling the Impact

Married couples have a unique advantage called "gift splitting." This allows a couple to combine their individual annual exclusions to make larger tax-free gifts. In 2024/2025, the individual annual exclusion is $19,000 . By splitting the gift, a husband and wife can give $38,000 to a single recipient each year without using any of their lifetime exemption .

The Mechanics of the Split

Gift splitting is not automatic. To use this strategy:

Both spouses must be U.S. citizens or residents .
The "non-donor" spouse must give formal consent .
The couple must file a federal gift tax return (Form 709) to notify the IRS of the election .
Once elected, all gifts made by either spouse during that calendar year must be split .

GRATs: Freezing Value for Heirs

A Grantor Retained Annuity Trust (GRAT) is a powerful tool for assets that are expected to appreciate significantly, such as pre-IPO stock or rapidly growing real estate .

How a GRAT Works

Transfer: You place a high-growth asset into an irrevocable trust for a set term (usually 2 to 10 years) .
Annuity: The trust pays you back the original value of the asset plus a small amount of interest (the IRS "hurdle rate" or Section 7520 rate) .
The "Win": If the asset grows faster than the hurdle rate, all that "excess" appreciation passes to your heirs at the end of the term entirely free of gift and estate taxes .
Zeroed-Out GRAT: Many people structure these so the annuity payments exactly equal the original gift plus interest. This results in a "gift" of $0 in the eyes of the IRS, preserving your lifetime exemption .

IDGTs: The "Defective" Advantage

An Intentionally Defective Grantor Trust (IDGT) is a sophisticated strategy that separates income tax treatment from estate tax treatment .

Estate Tax: The assets are removed from your taxable estate, meaning they won't be taxed at your death .
Income Tax: The trust is "defective" for income tax purposes, meaning you (the grantor) continue to pay the income taxes on the trust's earnings .
The Benefit: By paying the trust's income taxes yourself, you are essentially making additional "tax-free gifts" to the trust beneficiaries, as the trust assets can grow without being depleted by tax payments .

Charitable Strategies: DAFs and Philanthropy

Advanced planning often includes charitable goals. A Donor-Advised Fund (DAF) allows you to make a large, tax-deductible contribution now and then recommend grants to charities over time . This is particularly useful in high-income years (like after selling a business) to offset taxes while creating a lasting family legacy. You can even name your children as successor advisors to the DAF, teaching them the value of philanthropy .

Comparison of Advanced Transfer Tools

Strategy	Best Used For...	Primary Benefit
Gift Splitting	Annual giving to family	Doubles the tax-free gift amount ($38k vs $19k)
GRAT	Rapidly appreciating assets	Passes "excess" growth tax-free to heirs
IDGT	Long-term wealth building	Grantor pays income tax, allowing trust to grow faster
DAF	Philanthropic goals	Immediate tax deduction with future grant flexibility
529 Plan	Education funding	"Accelerated gifting" (5 years of gifts at once)

The "Anti-Clawback" Security

A major concern for those using their lifetime exemption now is what happens if the exemption limit drops in the future (as it is scheduled to do in 2025). The Treasury Department and the IRS issued regulations in 2019 confirming that they will not "claw back" gifts made while the higher limits were in effect . This creates a "use it or lose it" opportunity for wealthy families to lock in the current $13.99 million exemption before it potentially disappears .

Strategic Valuation: The Step-Up in Basis

While irrevocable trusts are great for removing assets from an estate, they sometimes forfeit a "step-up in basis." When you inherit an asset directly, its "cost basis" (the value used to calculate capital gains tax) is reset to the market value on the date of the original owner's death . If your father bought a stock for $10 and it's worth $100 when he dies, your basis is $100. If you sell it immediately, you pay $0 in capital gains tax. Advanced planners must weigh the benefits of estate tax removal (via trusts) against the benefits of the step-up in basis (via direct inheritance) .

Summary Checklist for Tax Mitigation

Maximize Annual Gifts: Use the $19,000 per person exclusion every year .
Consider Gift Splitting: If married, coordinate with your spouse to double your impact .
Evaluate High-Growth Assets: Determine if a GRAT or IDGT is appropriate for assets expected to "explode" in value .
Review State Exposure: Check if you live in one of the 12 states with an estate tax or 6 states with an inheritance tax .
Plan for the 2025 Sunset: Consult with an attorney now to decide if you should utilize the high federal exemption before it drops .
Coordinate Beneficiaries: Ensure that beneficiary designations on IRAs and 401(k)s align with your trust strategies, as these designations override your will .