When someone inherits a taxable investment account, the first instinct is often to “do something” quickly: sell everything, reinvest it, or preserve the portfolio exactly as it was as a way of honoring the person who built it. In reality, the smartest approach starts with understanding how inherited taxable assets actually work. The tax rules here are far more favorable than most people realize.
- The Step-Up in Basis Changes Everything
Unlike inherited IRAs, taxable accounts receive a step-up in basis at the owner’s date of death. That means unrealized gains accumulated during their lifetime effectively disappear. Your new cost basis is the market value on that date.
Why it matters:
- You can generally sell inherited positions with little or no capital gain.
- This creates a rare chance to completely restructure a portfolio without a major tax bill.
For many beneficiaries, this is the main reason not to simply hold what you inherited.
- Consider the Portfolio You Actually Need
A portfolio built for a 75-year-old retiree—often conservative, dividend-heavy, or concentrated in familiar stocks—is rarely the right fit for a 40-year-old professional.
Use the step-up window to realign the account with:
- Your risk profile
- Your time horizon
- Your long-term goals
This often means selling legacy positions, even if there’s some emotional weight attached to them.
- Don’t Ignore Concentration Risk
Many inherited accounts contain large positions in one or two stocks, often because the original owner purchased employer stock and then held them for decades to avoid capital gains.
After step-up, that rationale disappears.
Reducing a concentrated position is typically the single clearest, highest-value move you can make. - Rebuild Intentionally (But Not Blindly)
Because step-up resets gains as of the date of death, any market movement after that date is taxable to you.
So the transition plan matters:
- If markets have drifted upward since death, consider sequencing sales or harvesting losses elsewhere.
- If markets have pulled back, you may be able to realize tax losses while still repositioning.
A thoughtful transition avoids unnecessary taxes while moving the portfolio where it needs to be.
Bottom Line
If you inherit a taxable account, the question isn’t “Should I keep these investments?” The better question is: “What portfolio makes sense for me now that I have a clean tax slate?”
The step-up rule gives you a powerful opportunity—use it wisely.