When purchasing a new bed, the foundation you will need depends on the type of mattress you select. Most mattresses do not need a box spring. Traditionally, box springs were used to absorb shock and keep body weight evenly distributed when paired with an innerspring mattress. However, modern modern-day box springs only add height.
Therefore, a box spring is usually not necessary. In fact, memory foam and latex mattresses can become damaged when placed on a box spring since these beds need to rest on a flat, solid foundation to prevent sagging.