poor as a churchmouse

(as) poor as a church mouse

Very poor; having little or no money. My father was as poor as a church mouse growing up, so his sole focus was to give his kids every opportunity in life that he missed out on. We've become poor as church mice ever since the bank raised the interest rates on our mortgage.
See also: church, mouse, poor

poor as a churchmouse

Having little or no wealth and few possessions, as in She's poor as a churchmouse, so you can't expect her to donate anything. The reason for this long-used simile is unclear, but most believe that, since churches are not known for storing food, a mouse inside one would fare poorly. It has survived such earlier phrases as poor as Job. [Second half of 1600s]
See also: churchmouse, poor