Box springs were once essential but modern mattresses often do not require them.
Traditional innerspring mattresses may benefit from box springs, which add shock absorption and extend mattress life.
Memory foam, latex, and most hybrid mattresses perform better on solid or slatted foundations. Box springs can void warranties.
Consider a box spring if you need extra height, have an older bed frame designed for one, or want the traditional bouncy feel.
Skip the box spring for modern foam mattresses, platform beds, or adjustable bases.
Box springs are essentially obsolete for modern mattresses. They were designed for traditional innerspring mattresses that needed the flex and shock absorption a box spring provides. Modern pocketed coil hybrids don't benefit from this additional flex.
If your bed frame specifically requires a box spring (many older metal frames do), a bunkie board is a more affordable and practical alternative. These thin, solid platforms provide the same height adjustment without the unnecessary coil layer.
Some retailers still push box springs as an add-on purchase because the margins are high. Don't feel pressured — most mattress brands explicitly state that box springs are not required and sometimes not recommended.