take (something) to the bank(redirected from took this to the bank)
take (something) to the bank
To believe that a particular statement or piece of information is definitely true (at least according to the speaker). I heard from a very reliable source that this company is about to close—you can take it to the bank. I'm your dad—nothing you could do could ever make me stop loving you. You can take that to the bank!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.