Liz Weston

Dear Liz: In your response to a question about the adjusted basis of a residence after the death of a spouse, you state that the surviving spouse may add to the adjusted basis “any commissions or fees paid to purchase the property and the cost of improvements.” Your example adds $150,000 in “improvements over the years” to the $850,000 value of the home at the time of the spouse’s death in 1992. Wouldn’t those improvements (and other costs) have to be made after the date of the spouse’s death, since otherwise they would already be included in determining the value of the home at the date of death?

Answer: Good point. If the surviving spouse lives in a community property state, only improvements that happened after the date of the first spouse’s death would increase the basis, because both halves of the property get a step up to the current fair market value when one spouse dies. In other states, only the deceased spouse’s half of the property would get the step up. The surviving spouse can add his or her half of the improvements made before the death, and anything done after the death, to the tax basis to determine home sale profits.