Dear Liz: I recently sold a home and am trying to escape the dreaded capital gains tax. I’ve done everything I can to reduce my overall tax bill, including maxing out my retirement contributions. I don’t want to buy a more expensive home to escape the gains tax. Any thoughts?

Answer: Buying a more expensive home wouldn’t change what you owe on your previous home. The days when you could roll gains from one home purchase into another are long gone.

These days you’re allowed to exclude up to $250,000 in home sale profit from your income (the limit is per person, so a couple can shelter $500,000). In other words, that amount is tax free, as long as you lived in the home for at least two of the previous five years. Beyond that your profit is subject to capital gains taxes. The top federal capital gains rate is 20%, plus a 3.8% investment surtax if your income is more than $200,000 for singles or $250,000 for married couples.

Here’s where good record-keeping may help. While generally you’re not allowed to deduct repair and maintenance costs from that profit, you can use home improvement expenditures to reduce the tax you owe. Home improvements are added to your cost basis — essentially what you paid for the property, including settlement fees and closing costs, and that’s what is deducted from your net sales price to determine your profit.

You’ll need receipts plus credit card or bank statements to prove what you paid. Improvements must “add to the value of your home, prolong its useful life, or adapt it to new uses,” according to IRS Publication 523, Selling Your Home. Examples of improvements include additions, remodels, landscaping and new systems, such as new heating or air conditioning systems. You can include repairs that are part of a larger remodeling job, but you can’t include improvements you later take out (such as the cost of a first kitchen remodel after you do a second one).