How Is Cost Basis Calculated for Gifted Stock?
Receiving shares of stock as a gift can feel like a windfall with no tax history attached, but the rules generally treat the shares as carrying the giver’s original financial story forward, not starting a fresh one.
The short answer
When someone gives you stock, your cost basis for figuring gain or loss later is generally the same as the giver’s original cost basis — a concept called carryover basis — plus certain adjustments in some cases. There’s an important exception: if the stock’s fair market value on the date of the gift is lower than the giver’s original basis, a special dual-basis rule can apply, using a different figure depending on whether you eventually sell at a gain or a loss.
The general rule: carryover basis
In the ordinary case, where the stock has appreciated since the giver purchased it, the recipient simply steps into the giver’s shoes for tax purposes. If the giver originally paid a certain amount per share and the stock has since risen in value, the recipient’s basis is that original purchase price, not the value on the day the gift was made. That means when the recipient eventually sells, the capital gain is measured from the giver’s original cost, not from the value at the time of the gift, and how long the giver already held the shares typically counts toward determining whether a later sale qualifies for long-term treatment once the recipient sells.
The twist when the stock has lost value
Things get more complicated when the stock is worth less on the day of the gift than what the giver originally paid for it. In that specific situation, the rules effectively create two different basis figures for the same shares: one for calculating a gain if the recipient later sells above the giver’s original basis, and a separate, lower figure — the value on the date of the gift — for calculating a loss if the recipient sells below that value. If the eventual sale price falls between those two numbers, the result is neither a taxable gain nor a deductible loss at all. This dual-basis rule exists specifically to prevent a decline in value from being transferred as a tax loss to someone who didn’t experience that decline as an owner.
Why the distinction from inherited stock matters
It’s worth separating this from what happens with inherited stock, which generally receives a basis adjustment to fair market value at the date of death rather than carrying over the original owner’s cost. Gifted stock and inherited stock are taxed under entirely different mechanics, so assuming gift rules apply to an inheritance, or the reverse, can lead to a significantly wrong basis calculation.
Keeping the right records
Because the basis calculation depends on the giver’s original purchase information, a recipient of gifted stock is generally relying on the giver to provide the original purchase price and date, along with the fair market value at the time of the gift if the stock had declined. Without that documentation, establishing basis later, potentially years after the gift, can become difficult, which is one more reason gifted securities deserve the same kind of paper trail that stock donated directly to a charity would need for its own separate valuation purposes.
What to weigh
Gifted stock doesn’t get a clean slate. It inherits a basis history that determines the tax outcome of a future sale, and that history can branch into two different numbers if the stock had lost value before the gift was made. Tracking the giver’s original cost and the value on the gift date from the outset avoids a scramble for records later.