Simple definition
Step-up in basis is a tax rule for inherited assets. Cost basis is the value used to figure taxable gain when something is sold. When you inherit an asset, its basis generally resets, or steps up, to its market value on the date the previous owner died. So all the growth that happened during their lifetime is not taxed to you as a capital gain. If you sell soon after inheriting, there may be little or no gain to report. This is general education, not legal advice.
Why it matters
This rule can dramatically shrink the tax bill on inherited investments or property. Instead of paying capital gains on decades of growth, heirs are taxed only on any increase after the date of death. Understanding it helps families plan how and when to pass on or sell appreciated assets.
Real-life example
Your parent bought stock for $20,000, and it is worth $100,000 when they die. You inherit it with a stepped-up basis of $100,000. If you sell it soon after for $100,000, you owe no capital gains tax on the $80,000 of growth that happened during their lifetime.
Common mistakes
- Assuming heirs owe tax on the original owner's decades of gains.
- Selling an asset before death and losing the potential step-up.
- Confusing gifts during life, which keep the giver's basis, with inheritances.
- Overlooking that rules differ for jointly owned and community property.
Pro tips
- Record the date-of-death value to document the new basis.
- Weigh inheriting versus receiving a gift, since basis treatment differs.
- Keep records of any improvements that adjust the basis.
- Consult a tax professional, since step-up rules can be complex.
Related Money Dictionary terms
- Estate TaxA federal or state tax on the value of a large estate before assets pass to heirs.
- Inheritance TaxA state tax that some heirs pay on the value of property they receive from someone who died.
- Gift TaxA federal tax that may apply when you give away money or property above the annual exclusion amount.
- Payable-on-Death BeneficiaryThe person you name to inherit the money in an account when you die, letting the funds pass to them without going through probate.
- EstateEverything you own at death, including money, property, and belongings, minus what you owe.
- Asset AllocationHow you split your money among stocks, bonds, and cash — the biggest driver of risk and growth.
Frequently asked questions
How does a step-up in basis save on taxes?
Capital gains tax applies to the difference between an asset's sale price and its basis. Because inheritance resets the basis to the value at the owner's death, the growth during their lifetime escapes capital gains tax for the heir. Selling near that value can mean little or no taxable gain.
Is a gift treated the same as an inheritance?
No. A gift given during life generally carries over the giver's original cost basis, so the recipient may owe capital gains on that older growth when they sell. An inherited asset usually gets a stepped-up basis to the date-of-death value instead. That difference can matter a lot, so plan carefully.
Does step-up in basis apply to all inherited assets?
It applies to many capital assets like stocks, real estate, and other property, but not to everything; certain retirement accounts follow different rules. Treatment can also vary for jointly owned or community property. Because the details get technical, a tax professional can confirm how the rule applies to a specific inheritance.
Knowing what Step-Up in Basis means is knowledge — the first half. A brick gets placed when you act on it: if you may inherit or leave assets, ask a tax professional how the step-up in basis would apply.
Also builds: Taxes
Sources & references
More in Estate Planning
Plain-English education — not personalized legal, tax, or investment advice.