Step-Up in Basis
Step-Up in Basis
Definition
A step-up in basis is a tax rule that adjusts the cost basis of an asset to its market value at the time of the owner’s death. This reduces or eliminates capital gains tax on prior appreciation when the asset is later sold by heirs.
Why This Matters
A step-up in basis can significantly reduce the tax burden on appreciated assets.
Over time, investments held in taxable accounts may increase in value, creating unrealized capital gains. If those assets are sold during the owner’s lifetime, the gain is subject to capital gains tax. When the asset is passed to heirs, the cost basis is reset to the current market value, which removes the tax liability on prior appreciation.
For high-net-worth households and business owners, this creates a planning decision around whether to sell assets during life or transfer them at death. In some cases, holding appreciated assets can be more tax-efficient, especially when those assets are intended for heirs.
This also affects how different accounts are prioritized. Assets that receive a step-up in basis may be treated differently than retirement accounts, which do not receive the same treatment. Coordinating asset location and withdrawal strategy with estate planning goals can improve after-tax outcomes across generations.
One Common Misconception
“Unrealized gains will always be taxed eventually.”
That is not always the case.
Appreciated assets held in taxable accounts may receive a step-up in basis at death, which removes the tax liability on prior gains. This creates an opportunity to manage which assets are used during life and which are passed on, particularly for households focused on long-term wealth transfer.
Planning Considerations
Applies to taxable assets such as stocks, real estate, and business interests
Can eliminate capital gains tax on appreciation that occurred during the original owner’s lifetime
Influences decisions around selling versus holding appreciated assets
Should be coordinated with estate planning and withdrawal strategy
Related Terms
Taxable Investment Account
Capital Gains Tax
Tax Diversification
Withdrawal Strategy
Estate Planning
Disclosure: This content is for educational purposes only and is not intended as financial advice. Please consult with your financial, tax, or other professional before making any decisions.
