How does a trust affect stepup in basis for assets

Jane just called, utterly distraught. Her husband, Mark, passed away last month, and she discovered a handwritten codicil to his Trust—a codicil that explicitly removed their vacation home in Tahoe from the Trust. She’d assumed it was protected, and now faces potentially hundreds of thousands in additional capital gains tax when she sells it. The codicil was dated, signed, and appeared valid, but it wasn’t properly witnessed. California law is very specific about the requirements for amending a Trust, and this flaw renders it unenforceable, leaving the property subject to full probate and its associated costs – a painful lesson in meticulous estate planning.

As an Estate Planning Attorney and CPA with over 35 years of experience here in Temecula, I often see clients grappling with the interplay between Trusts and tax benefits like the step-up in basis. It’s a critical piece of the puzzle, and a properly funded Trust is often the key to maximizing those benefits for your heirs. Let’s break down how this works.

What is Step-Up in Basis and Why Does It Matter?

When you inherit an asset – like stocks, real estate, or a business – you don’t pay tax on the appreciation that occurred during the decedent’s lifetime. Instead, the tax basis (the original cost) is “stepped up” to the fair market value on the date of death. This means your capital gains tax liability is significantly reduced, or even eliminated, when you eventually sell the inherited asset. The savings can be substantial, potentially saving your heirs tens or even hundreds of thousands of dollars.

How Does a Trust Impact Step-Up in Basis?

Generally, assets held within a revocable living trust receive the same step-up in basis as assets passing through a probate estate. This is because the IRS recognizes that, for estate tax purposes, assets in a revocable trust are treated as if they were still owned by the decedent. The key is proper titling – assets must be correctly titled in the name of the Trust to ensure this benefit is realized.

However, simply having a Trust isn’t enough. As Jane’s situation illustrates, a poorly drafted or improperly executed Trust amendment can invalidate those protections. And even a perfectly valid Trust can lose its tax benefits if it’s not properly funded. Assets must be actively transferred into the Trust’s ownership to be governed by its terms.

What About Real Estate and Prop 19?

Real estate is a particularly complex area. While a Trust can help secure a step-up in basis for the property’s value, you also need to consider Proposition 19. Under Prop 19, your children cannot keep your low property tax base unless they move into the home as their primary residence within one year. This can create a difficult choice: maintain the low property tax base (requiring occupancy) or sell the property and benefit from the step-up in basis. Furthermore, effective April 1, 2025, AB 2016 dictates that primary residences worth $750,000 or less may qualify for simplified transfer under AB 2016 (Probate Code § 13151), but investment properties still face full probate.

Business Interests and the CTA Deadline

If the Trust holds interests in Limited Liability Companies (LLCs) or other closely held businesses, there’s another critical deadline to be aware of. The Corporate Transparency Act (CTA) requires reporting of beneficial ownership information to FinCEN. Managing a deceased owner’s LLC now requires filing an updated BOI Report with FinCEN to avoid $500/day civil penalties. Failure to comply can result in significant fines, so it’s vital to address this promptly as part of the estate administration process.

Digital Assets and RUFADAA

Don’t overlook digital assets – cryptocurrency, online accounts, photos, and digital documents. Without specific RUFADAA language in your Trust, Coinbase and Google can legally deny your executor access to your digital wallet and photos. This can create significant hurdles in identifying and securing all estate assets.

What Happens with Smaller Estates?

For estates below a certain threshold, a simplified probate process might be available. However, it’s crucial to remember the Small Estate Threshold: if your combined ‘probate assets’ (accounts without beneficiaries) exceed $208,850 (effective April 1, 2025), they are frozen until probate concludes. A Trust allows you to bypass this process altogether, providing a smoother and faster transfer of assets to your beneficiaries.

The TCJA Sunset and High-Net-Worth Individuals

For clients with substantial estates, it’s vital to be aware of the impending changes to the federal estate tax exemption. The TCJA Sunset means the Federal Estate Tax Exemption drops by ~50% on Jan 1, 2026, putting assets over ~$7M (single) or ~$14M (married) at risk of a 40% tax. Proactive planning now—including advanced Trust strategies—is essential to mitigate this risk.

As a CPA as well as an attorney, I’m uniquely positioned to understand these intricacies. I don’t just draft Trusts; I analyze the tax implications of every decision, ensuring your estate plan is optimized to minimize tax liabilities and maximize the inheritance your loved ones receive. My 35+ years of experience have taught me that a comprehensive plan considers not just legal requirements, but also the ever-changing tax landscape.

Verified Government Resources for Estate Administration

• Property Tax Reassessment (Prop 19): California State Board of Equalization (Prop 19)
  Critically important for beneficiaries inheriting a family home; under Prop 19, the parent-child exclusion for property tax reassessment is limited. The heir must make the home their primary residence and file for the exemption within one year to avoid a full reassessment to current market value.
• Unclaimed Assets Search: California State Controller – Unclaimed Property
  A mandatory step for Trustees and Executors fulfilling their duty to marshal all estate assets. You must search this database for dormant bank accounts, uncashed insurance checks, or forgotten safe deposit box contents that legally belong to the Decedent’s Estate before closing administration.
• Federal Estate Tax Guidelines: IRS Estate Tax Guidelines
  Executors must determine if the Gross Estate exceeds the federal exemption threshold. Even if no tax is due, filing is still required.
• Corporate Transparency Act: FinCEN – Beneficial Ownership Information (BOI)
  This federal regulation requires reporting of beneficial ownership information for certain legal entities.

What causes California trust administration to fail due to poor funding, vague terms, or trustee misconduct?

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.

• Locking it Down: Explore permanent trust structures for asset shielding.
• Post-Death Creation: Understand trusts created by will.
• Liquidity: Utilize an irrevocable life insurance trust for estate taxes.

Ultimately, the success of a trust depends on the details—proper funding, clear terms, and a trustee willing to follow the rules. By anticipating friction points and documenting every step of the administration, fiduciaries can protect the estate and themselves from liability.

Verified Government Resources for Estate Administration

• Property Tax Reassessment (Prop 19): California State Board of Equalization (Prop 19)
  Critically important for beneficiaries inheriting a family home; under Prop 19, the parent-child exclusion is limited. The heir must make the home their primary residence and file for the Homeowners’ Exemption within one year to avoid a full reassessment to current market value.
• Unclaimed Assets Search: California State Controller – Unclaimed Property
  A mandatory step for Trustees and Executors fulfilling their duty to marshal all estate assets. You must search this database for dormant bank accounts, uncashed insurance checks, or forgotten safe deposit box contents that legally belong to the Decedent’s Estate before closing administration.
• Federal Estate Tax Guidelines: IRS Estate Tax Guidelines
  Executors must determine if the Gross Estate exceeds the federal exemption threshold. Even if no tax is due, filing Form 706 may be necessary to preserve the Deceased Spousal Unused Exclusion (DSUE), allowing the surviving spouse to utilize the decedent’s unused exemption (“Portability”).
• Small Estate Affidavit (Personal Property): California Probate Code § 13100
  Used for settling estates without full probate when the total value of qualifying personal property is below the statutory threshold (increased to $208,850 effective April 1, 2025). This Affidavit Procedure requires a 40-day waiting period after death and cannot be used for real property exceeding specific limits.
• LLC/Corporate Compliance (BOI): FinCEN – Beneficial Ownership Information (BOI)
  Under the Corporate Transparency Act, if the estate includes an interest in an LLC or Corporation, the Executor may need to update the Beneficial Ownership Information report. Failure to update control information within 30 days of the owner’s death can result in significant federal civil penalties.