Pardew said that owner Mike Ashley has made funds available and the club will spend over the summer if they are able to find the right players to bring in.
"I thought this summer would be a summer of [change] because the age of our players, the quality we have got, you were guessing that one or two might go," he told Sky Sports News.
"With the players that we have with a year left and those who are up, it was always a big job this summer. Most summers are [transitional] at Newcastle, but this one is perhaps more important than most.
"But we have got a transfer kitty that should work for us if we get the right players."
Pardew's side are currently ninth in the Premier League, two points off Southampton in eighth.