Big Law expenses such as travel and marketing are poised for a big comeback as firm lawyers return to their offices over the next several months. But budgets may have been indefinitely changed by the pandemic.

Some categories of spending, like marketing and travel, may come back in roughly full force later this year. Others, such as real estate, may never return to where they were prior to COVID-19. Meanwhile, firms may be spending much more in 2021 on workflow tools and other technology to supplement remote setups, analysts and firm leaders say.