Provided are antimicrobial compositions that include peracid compositions. The peracid compositions have increased shelf life and storage stability. The antimicrobial compositions can be formulated into a hard surface disinfectant composition that includes a hydrogen peroxide generator, a peracetic acid catalyst, a slow hydrolyzing acid and optionally a carboxylic acid, where the ratio between the hydrogen peroxide generator and the peracetic acid catalyst is from about 1.5:1 to about 3:1 respectively.