in business

/IH0 N B IH0 Z N AH0 S/
adjective
  1. 1

    Engaged in business activity

  2. 2

    Ready to proceed in a desired activity.

    โ€œI finally got the vents back from the chrome shop. / Now you're in business!โ€

Source: https://en.wiktionary.org/wiki/in%20business