A bond swap occurs when the proceeds from the sale of one debt instrument are used to subsequently purchase another debt instrument.
Bond swaps can be used to achieve tax benefits, known as a tax swap; or else be used to take advantage of changing market conditions.
Bond swaps might also be used to shorten or extend maturities or duration of a bond or improve the credit quality of a fixed-income portfolio.
Investors must be careful to avoid wash sales during these types of transactions.