Legal & Compliance
Tax Basis Step-Up
Last updated
Quick Answer
An increase in the tax basis of an asset, often occurring at death or through certain transactions, which reduces the taxable capital gain upon future sale.
A Tax Basis Step-Up occurs when the cost basis of an asset is adjusted upward, typically to its fair market value at the time of a triggering event such as the death of the owner. In the venture capital context, a step-up in basis is significant because it reduces the taxable gain when the asset is eventually sold. For inherited stock, the basis steps up to the fair market value at the date of death, effectively eliminating all unrealized gains accumulated during the decedent's lifetime. Step-ups can also occur in certain corporate reorganizations, Section 338 elections in M&A, and partnership transactions under Section 754. In estate planning for founders, the step-up at death can be more valuable than the QSBS exclusion for very large holdings.
In Practice
A founder holds stock with a basis of $1,000 that is now worth $100 million. If the founder passes away, the heirs receive the stock with a stepped-up basis of $100 million. If they sell immediately, they owe zero capital gains tax on the $100 million gain that accrued during the founder's lifetime.
Why It Matters
The step-up in basis is one of the most powerful wealth transfer mechanisms in the tax code. Founders with enormous unrealized gains should factor the step-up into their estate planning, as it can eliminate capital gains liability entirely for heirs on assets held at death.
Further Reading
Secondary Sales for Startup Founders: When and How to Sell Shares
Founder secondary sales let you convert paper equity into real liquidity before an exit. Learn when to sell startup shares, how to structure the transaction, and what pitfalls to avoid.
Distributions in Venture Capital: Waterfall, Timing, and Tax Implications
Learn how venture capital distribution waterfalls work, when LPs receive proceeds, and the key tax implications every fund manager and LP needs to understand.
How VC Exits Actually Work: IPO, M&A, and Secondary Sales
From IPOs and M&A to secondaries, here's how VC exits actually work — including cap table mechanics, lock-ups, and what drives real returns for fund managers and LPs.
LP vs GP: How Venture Capital Fund Structure Works
A clear explanation of how venture capital funds are structured, the roles of limited partners and general partners, fee economics, and how fund structure affects startup founders.
Frequently Asked Questions
What is Tax Basis Step-Up in venture capital?
A Tax Basis Step-Up occurs when the cost basis of an asset is adjusted upward, typically to its fair market value at the time of a triggering event such as the death of the owner.
Why is Tax Basis Step-Up important for startups?
Understanding Tax Basis Step-Up is critical for founders navigating the fundraising process. It directly impacts deal terms, valuation, and the relationship between founders and investors.
What category does Tax Basis Step-Up fall under in VC?
Tax Basis Step-Up falls under the legal category in venture capital. This area covers concepts related to the legal frameworks and compliance requirements in venture capital.
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