Dear Liz: My mother, who is approaching 100 and in good health, has a significant mutual fund holding. It is mostly made up of capital gains. She does not need this fund for her daily living expenses. The question she has: Are the taxes on disposition the same before or after she dies? I am thinking of things like the capital gains tax exemption (never used) as well as inheritance taxes.

Answer: The capital gains tax exemption applies to the sale of a primary residence — a home, not a mutual fund. If your mother sold the fund today, she would owe capital gains tax on the difference between the sale price and her “cost basis.” Her cost basis is what she paid for the fund originally plus any reinvested dividends. The top federal capital gains tax rate is 20%, although most taxpayers pay a 15% rate.

If her objective is to get the maximum amount to her heirs and minimize the tax bill, she should bequeath this investment to them at her death. Then the mutual fund will get a “step up” in tax basis to the current market value. When the heirs sell the investment, they’ll only owe taxes on the appreciation that occurs after her death (if any).

You asked about inheritance taxes, but only a few states levy taxes on inheritors. Typically, it’s the estate that would pay the taxes, and only those above certain amounts. In 2016, the federal estate taxes exemption is $5.45 million