Wiktionary
prep.phr. (alternative form of on the money English)
Wikipedia
"Right on the Money" is a song written by Phil Vassar and Charlie Black, and recorded by American country music singer Alan Jackson. It was released in October 1998 as the second single from his CD High Mileage. The song became Jackson's sixteenth number-one single on the Hot Country Singles & Tracks (now Hot Country Songs) chart.
Usage examples of "right on the money".
We found a couple of small anomalies, but we tracked those down, and aside from that, everything was right on the money.
I was in charge, got those beers and shots delivered right on the money and everyone was happy.
So that deduction had been right on the money: these people weren't randomly selected, they were recruited without their knowledge.
Even if you put a nice heavy high-velocity load right on the money, just punch a couple of vertebrae right out and bounce the skull off the ceiling, there'll still be about a ten-to-fifteen-percent chance that the corpse's trigger finger will clench.
He was right on the money, and the American people responded to it.
I would've said more, but my voices were shrieking that I should shut the hell up already, and I decided that they were, for once, right on the money.