How do I alter the column width in "expenses" view?

Hi carole-taylor-la, thanks for joining the Community

It is not possible to toggle the column width on the new layout of the Expenses screen. You can manage which columns appear by selecting the small cog or collapse the menu (select the 3 lines in the top left corner of the page) to expand the view.

If you would like to share any feedback, we'd be grateful if you could post this on our new QuickBooks Idea Exchange board. We'll be reviewing all ideas submitted here, and if they get to over 50 votes, we will review it with our Product team.