A structured settlement is an agreement reached between a plaintiff (the person who files a lawsuit) and the insurance company for the defendant (the person or company that is sued) to pay a personal injury or wrongful death settlement to the plaintiff over time rather than paying the money in a lump sum.
Such settlements can be structured to pay out the money over any period of time, from a year to a lifetime. The payments can be a combination of monthly payments and "bonus" payments every five years. There is virtually no limit as to how payments can be structured; the financial and other needs of the individual determine how a structured settlement will work.
Every structured settlement includes the payment of interest, and this interest is tax-free assuming that the appropriate rules are followed.