someone who saves (especially money)
"My dad is a saver, so he never spends any of his paycheck on impulse buys."
One who saves.
"After years of carefully managing his budget, he finally became a saver enough to buy his first home."
In plain English: A saver is someone who keeps money instead of spending it right away.
"The bank account saver earned interest on his savings every month."
Saver is a straightforward formation from the verb save combined with the suffix -er. It was first used to describe someone or something that performs the action of saving.