Cost basis adjusts at death so save the proofs
“Cost basis” in its simplest sense is the amount you paid for an asset whose value changes over time. A dollar is a dollar, but a share of stock might be purchased for $19 and later be worth $5 or may be worth $100. When assets are bought and sold, there may be capital gains tax on the difference (gain) between the cost basis and the sale price, subject to various exclusions that...