Amid an ongoing civil war between a section of the Light Blues support and the Ibrox board, which includes a threat by fans to withhold season-ticket money, Wallace has promised to publish an update of his 120-day review of the club's finances on April 25.
The Scottish League One champions reported losses of £3.5million in the six months to the end of last December and there are concerns as to their ability to continue as a going concern next season.
With one eye on strengthening his squad, and deciding what to do with the players who are out of contract in the summer including Emilson Cribari, Kyle Hutton, Andy Little, Steve Simonsen and Chris Hegarty, the Rangers boss expects the review to give him an indication of what kind of budget he will have to work within for the step up to the Championship.
Ahead of the trip to Stenhousemuir on Saturday, McCoist said: "I haven't been told what the budget is.
"At this point we don't know if we can get players in, or if we can buy players next season.
"It is not an ideal situation for anybody, because you would like to let players know as quickly as possible what the plans are for next season.
"It is common knowledge that Graham and the board are doing a review so we will wait to see the outcome of that and I think it is safe to say we will be told then which is absolutely fine.
"I don't know what the review will say but from my own point of view it is very important as we will have an indication of what we can and cannot do in terms of my plans for next season and that has to be a positive."
There seems no end to the off-field tension at the Govan club.
The Union of Fans, a coalition of supporters' groups who back former director Dave King's proposals for a new share issue, called on Thursday night for Wallace to reveal if he could earn an annual 100 per cent bonus on his salary, which it has been said is in excess of £300,000 a year.
McCoist remains determined to not get caught up in the conflict.
"It is our job to get results on a Saturday," he said. "I genuinely don't know about bonuses in terms of who is on what or what they get. That isn't my business."
While still unsure if he will have money to spend, McCoist will expect any new recruit for next season to have a mental toughness to match their ability.
The Rangers manager was speaking in the context of midfielder Nicky Law's admission that he will be glad when the season is finished so he can escape the criticism which he has found to be relentless since signing from Motherwell last summer.
"The ability to take on the mental pressure is as big a test as anything," said McCoist.
"It is a big change for players coming to this club and it is one they have to adapt to. Playing for our club, you have to have a mental strength.
"The criticism that is levelled at players, manager and coaches, if not unique, is unlike at most clubs. So when you are looking at players, they have to have a mental strength."