Can a GST trust prevent an inheritance from being depleted by taxes

I recently received a frantic call from Randall. He’d meticulously drafted a codicil to his trust, intending to provide for his grandchildren, but never actually signed it. By the time he realized his mistake, it was too late. A minor stroke had impacted his capacity, and the unsigned codicil was worthless. His estate, already facing significant estate taxes, now lacked the crucial GST tax planning it desperately needed, costing his heirs a substantial sum. This is a shockingly common scenario, and it highlights the critical importance of not only having a plan, but ensuring it’s properly executed and regularly reviewed.

How Can a GST Trust Shield Future Generations?

As an Estate Planning Attorney and CPA with over 35 years of experience, I’ve seen countless estates eroded by taxes. A properly structured Generation-Skipping Transfer (GST) trust is a powerful tool to mitigate this, but it’s not a simple, one-size-fits-all solution. The primary goal is to transfer assets to future generations – your grandchildren, or even great-grandchildren – without triggering estate or gift tax at each generation. Without a GST trust, each transfer would be subject to tax, substantially diminishing the inheritance. My background as a CPA allows me to see beyond the legal document and understand the intricate tax implications, particularly the all-important step-up in basis and potential capital gains liabilities.

What is the GST Tax Exemption and How Does it Work?

The federal government imposes a GST tax on transfers exceeding a certain exemption amount. Currently, and effective Jan 1, 2026, the OBBBA permanently set the Federal Generation-Skipping Transfer (GST) Tax Exemption to $15 million per person; failing to allocate this exemption on Form 709 exposes the trust to a flat 40% tax on every distribution to grandchildren. This exemption shields a significant amount from taxation, but it’s crucial to actively make the election to apply it. Many clients mistakenly believe simply creating the trust is enough. It’s not. Proper allocation requires careful annual planning.

The 90-Year Rule: How Long Can a GST Trust Last?

California has strict rules governing the duration of trusts. Unlike ‘dynasty friendly’ states like South Dakota, California is bound by the Uniform Statutory Rule Against Perpetuities (USRAP), which generally limits the trust’s lifespan to 90 years unless specific savings clauses are used. This means that after 90 years, the assets must be distributed, potentially triggering estate taxes at that time. We can incorporate ‘wait-and-see’ provisions or other sophisticated techniques to extend the trust’s life, but these require careful drafting and a thorough understanding of California law.

What Happens to Real Estate Held in a GST Trust?

Real estate within a GST trust presents unique challenges. Under Prop 19, transferring a home to grandchildren via a GST Trust almost always triggers a property tax reassessment to current market value, as the ‘grandparent-grandchild’ exclusion is severely restricted compared to the old Prop 58 rules. This can significantly increase property tax bills and potentially force the sale of the property. Careful consideration must be given to whether the benefits of keeping the property in the trust outweigh the increased tax burden.

What About Assets Beyond Traditional Finances?

Today’s estates often include digital assets – cryptocurrency, online accounts, and intellectual property. Without specific RUFADAA language (Probate Code § 870) in the GST Trust, service providers can legally block your trustee from accessing crypto wallets or cloud accounts intended for future generations. This can leave a substantial portion of the estate inaccessible. Similarly, if you have business interests held in LLCs, we must address the BOI reporting requirements. While domestic U.S. LLCs held in the trust are exempt from BOI reporting as of March 2025, trustees managing foreign-registered entities must still file updates with FinCEN within 30 days to avoid federal fines.

Contingency Planning: What If Things Go Wrong?

Let’s say a primary beneficiary predeceases you. What happens to the assets intended for them? If the trust doesn’t anticipate this, the assets could inadvertently fall back into your estate, triggering estate taxes. Furthermore, if an asset is titled in your name instead of the trust, we need a plan to transfer it seamlessly. For deaths on or after April 1, 2025, a home intended for the GST trust but left in the settlor’s name (valued up to $750,000) qualifies for a ‘Petition for Succession’ under AB 2016 (Probate Code § 13151). This is a Petition (Judge’s Order), NOT an Affidavit. It’s a vital distinction.

How do California trustee duties and funding rules shape the outcome for beneficiaries?

The advantage of a California trust is control and continuity, but this relies entirely on accurate funding and disciplined administration. Without clear asset titles and strict adherence to fiduciary standards, a private trust can quickly become a subject of public litigation over mismanagement, capacity, or undue influence.

• The Conflict: Prepare for potential contesting a trust if terms are vague.
• Execution: Follow strict trust administration to avoid liability.
• Philanthropy: Create charitable trusts for tax efficiency.

A stable trust administration relies on the trustee’s ability to balance investment duties, beneficiary communication, and tax compliance. When these elements are managed proactively, families can avoid the emotional and financial drain of litigation.

Verified Authority on California Generation-Skipping Trust (GST) Administration

• GST Tax Exemption (OBBBA): IRS Estate & GST Tax Guidelines
  Reflects the OBBBA update effective January 1, 2026, which sets the GST Tax Exemption at $15 million per person. Proper allocation of this exemption is the only way to shield trust assets from the flat 40% tax on distributions to grandchildren.
• Trust Duration Limits (USRAP): California Probate Code § 21205 (90-Year Rule)
  California follows the Uniform Statutory Rule Against Perpetuities. This statute generally limits a Generation-Skipping Trust’s validity to 90 years, preventing “forever” trusts common in other jurisdictions.
• Property Tax Reassessment (Prop 19): California State Board of Equalization (Prop 19)
  Critical for GST planning. Prop 19 severely limits the “grandparent-grandchild” exclusion, meaning most real estate transfers to grandchildren will trigger a property tax increase to current market value.
• Primary Residence Succession (AB 2016): California Probate Code § 13151 (Petition for Succession)
  If a home intended for the GST trust was accidentally left out, this statute (effective April 1, 2025) allows a “Petition for Succession” for residences valued up to $750,000, avoiding a full probate.
• Digital Legacy (RUFADAA): California Probate Code § 870 (RUFADAA)
  The authoritative statute for digital assets. Without specific RUFADAA provisions in the trust, multi-generational access to cryptocurrency and digital files can be legally denied by custodians.
• Business Compliance (FinCEN): FinCEN – Beneficial Ownership Information (BOI)
  As of March 2025, domestic U.S. LLCs are exempt from mandatory BOI reporting. However, trustees managing foreign-registered entities must still comply with strict reporting windows to avoid penalties of $500/day.