Pompey grabbed a 1-0 win at Wolves on Saturday thanks to a goal from on-loan Benfica midfielder Hassan Yebda.
Hart said: "The wages will be paid on Monday. I would expect the wages problem not to be happening again on the basis of the new investment.
"I think what is best said is over the next few days we will have new investment and this club will have some good news instead of bad stuff.
"New investment? Yes."
Hart was full of praise for his side after they ended a run of seven successive league defeats.
He said: "It was a great win. We have played better over the past month. We played well in the first half and defended tremendously in the second half.
"The whole group have been tremendous. Everyone knows our problems and what we have been through the last six months.
"These players have had everything thrown at them but they have stayed strong.
"They are a great bunch of lads, they show great spirit and they have never wavered.
"Yes, we got a few breaks today. We have earned it and some of the defending was excellent."
Wolves had strong claims for a penalty denied when Marc Wilson appeared to handle a cross from Michael Kightly.
But Wolves boss Mick McCarthy was more concerned about his side's defending when Yebda snatched the only goal of the game after 20 minutes.
He said: "I am getting a bit tired about saying, 'we should have had a penalty' because it sounds like I am bemoaning my luck.
"But if we defend a corner properly or a second ball that comes in, then we might be talking about that (the penalty claim) to win the game rather than to save it.
"That is more my grief. But if it is a penalty, he should have given it. There is no point in me speculating on it anymore.
"We played well in the second half and had a number of opportunities we should have done better with. They have done the basics and stopped us scoring."
McCarthy was not surprised Pompey finally broke their Premier League duck for the campaign.
He said: "Portsmouth are a Premier League side with still good players in the side.
"Of course they would win a game. It was just sad it has been here."