The phrase "extra penny" means having or spending a little bit more money than what is necessary or expected.
Sentences with «extra penny»
A few extra pennies for high - quality food will pay huge dividends in the quality of his health and life. (myhealthycat.com)
I am usually a fit person and due to which I could increase my sum assured this year due to no claims last year without paying a single extra penny on previous premium. (policybazaar.com)
They have said they won't ask anyone for a single extra penny in tax to start balancing the books. (itv.com)