Trust planning can inadvertently eliminate the step-up in basis at death, potentially increasing capital gains taxes for heirs.

Aug 11, 2025 | Inherited IRA | 1 comment

Trust planning can inadvertently eliminate the step-up in basis at death, potentially increasing capital gains taxes for heirs.

Losing Your Step Up: How Trusts Can Impact Your Heirs’ Inheritance Taxes

For years, the “step-up in basis” has been a powerful estate planning tool, allowing beneficiaries inheriting assets to avoid paying capital gains taxes on the appreciation of those assets during the deceased’s lifetime. In essence, the asset’s tax basis – the original purchase price used to calculate capital gains – is “stepped up” to its fair market value at the time of the owner’s death. This effectively wipes out years, or even decades, of potential capital gains tax liability.

However, not all estate planning strategies guarantee this advantageous step-up. Understanding how different types of trusts interact with the step-up in basis is crucial to ensure your heirs inherit assets with the least possible tax burden.

The Step-Up in Basis: A Quick Refresher

Imagine you bought stock for $1,000 years ago, and it’s now worth $10,000 when you pass away. Without the step-up in basis, your heirs would potentially owe capital gains taxes on the $9,000 difference. However, with the step-up, the tax basis becomes $10,000. If they sell the stock immediately for $10,000, there’s no capital gains tax to pay.

Where Trusts Can Complicate Things

While trusts are invaluable for estate planning – facilitating asset distribution, managing assets for beneficiaries, and minimizing estate taxes – they can impact the step-up in basis, sometimes negatively. The key lies in understanding the type of trust and who controls it.

Here are some common scenarios:

  • Revocable Living Trusts (RLTs): Usually, the Step-Up is Preserved

    RLTs are created and controlled by the grantor (the person creating the trust) during their lifetime. Because the grantor retains control and the assets within the RLT are considered part of their estate for tax purposes, the assets generally receive a step-up in basis upon the grantor’s death. This is the most common scenario.

  • Irrevocable Trusts: Be Careful, Step-Up May Be Lost

    Irrevocable trusts are more complex. Once established, the terms generally cannot be changed. Assets transferred into an irrevocable trust are often considered outside of the grantor’s estate. This can mean no step-up in basis for those assets upon the grantor’s death. This is because the assets are considered to have already been transferred to the trust before the grantor’s death, and the tax basis remains the same as when they were initially transferred.

    • Example: If you transfer a property with a $50,000 basis into an irrevocable trust and it appreciates to $200,000 before you die, the beneficiaries who eventually receive that property will likely inherit it with the $50,000 basis. This means they could face a significant capital gains tax bill if they sell the property.
  • Special Needs Trusts (SNTs): Depends on the Type

    The impact on the step-up in basis with SNTs depends on the type of trust and who funds it. First-party (or self-settled) SNTs, funded with the beneficiary’s own assets, often have specific rules regarding Medicaid payback upon the beneficiary’s death. Third-party SNTs, funded by someone other than the beneficiary, can be structured to preserve the step-up in basis for the beneficiaries, but careful planning is essential.

  • Qualified Terminable Interest Property (QTIP) Trusts: Generally Preserves the Step-Up

    QTIP trusts are often used in estate planning to provide for a surviving spouse while still controlling the ultimate disposition of the assets. Upon the death of the surviving spouse, the assets in the QTIP trust generally receive a step-up in basis.

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Why This Matters: Real-Life Implications

Losing the step-up in basis can have significant financial consequences for your heirs. Consider these scenarios:

  • Real Estate: A family cabin passed down through generations with a low original purchase price could trigger a massive capital gains tax liability if sold after being held in a poorly structured irrevocable trust.
  • Stocks and Bonds: A portfolio of investments held in an irrevocable trust for decades could generate a substantial capital gains tax bill when liquidated.

How to Protect Your Heirs

  • Consult with an Experienced Estate Planning Attorney: A qualified attorney can assess your assets, your family’s needs, and your overall estate planning goals to create a trust structure that minimizes taxes and preserves the step-up in basis where possible.
  • Understand the Terms of Your Trust: Don’t blindly sign documents. Make sure you understand how your trust operates and its potential impact on the step-up in basis.
  • Review Your Trust Regularly: Tax laws and family circumstances change. It’s crucial to periodically review your trust with your attorney to ensure it still meets your needs and optimizes your heirs’ inheritance.
  • Consider Alternative Strategies: There might be other estate planning techniques, such as gifting strategies, that can help minimize capital gains taxes while also preserving the step-up in basis.

The Bottom Line:

While trusts are powerful tools for estate planning, they require careful consideration to avoid unintended consequences, including losing the step-up in basis. Working with a qualified estate planning attorney is essential to create a trust structure that achieves your goals while minimizing the tax burden on your loved ones. Don’t let the complexities of trust law diminish the value of your legacy. Plan wisely and protect your heirs from unnecessary taxes.

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1 Comment

  1. @mbblegb

    How long do they have to sell a property to not lose the basis step-up?

    Reply

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