The Scottish Premier League says Rangers have "a prima facie case to answer in respect of [league] rules" over payments to players.
Rangers were investigated over alleged player payments outside of contract.
"Disciplinary charges will be brought when the future status of Rangers FC is clarified and prior to the start of season 2012/13," said an SPL spokesman.
“The delay in concluding the investigation was caused by an initial lack of co-operation from Rangers FC”
SPL spokesman
Meanwhile, SPL member clubs will vote on whether a newco Rangers should be admitted to the league on 4 July.
Rangers' attempts to exit administration via a company voluntary arrangement failed after major creditor HM Revenue and Customs turned down the proposal and the club's assets have been transferred to a new company, The Rangers Football Club, while Rangers Football Club plc is liquidated.
The club's new chief executive Charles Green has made an official request to transfer Rangers FC plc's share in the SPL to the new company to allow top flight football to continue at Ibrox.
However, the issue has to be voted on by all 12 members - including Rangers - and Green needs at least eight clubs to vote in favour of the request.
If five or more clubs vote against it, Rangers are likely to apply for the vacancy that would be created in the Scottish Football League with the intention of starting next season in Division Three.
With uncertainty over whether Rangers will be in the top flight for season 2012/13, their name has been replaced by "Club 12" in the SPL fixture list released on Monday morning.
"An application for registration of transfer of Rangers' SPL share has been received," said the league's spokesman.
- The company which had run Rangers until 14 June 2012 will shortly be liquidated
- A new company (newco) has bought Rangers' assets, including Ibrox Stadium
- The newco wants to replace the old company in the Scottish Premier League
- An 8-to-4 majority of SPL member clubs, including Rangers, is required for the newco to be admitted
- If 5 or more clubs vote no, Rangers will need to apply to be admitted to Scottish Football League Division Three
"Consideration of the application will depend on receipt by the SPL Board of all required documentation and verification.
"A general meeting of all 12 member clubs has been convened for 10am on Wednesday 4 July 2012 for members to decide whether to approve the transfer."
Rangers' use of employee benefits trusts during a decade-long period was the subject of a long-running tax tribunal, which concluded in January but has yet to return a verdict.
The SPL began its own investigation into whether Rangers had broken its rules after the tribunal concluded.
"The SPL board heard a report from its solicitors following the investigation into payments to, or for the benefit of, players allegedly made by Rangers FC outside of contract," added the spokesman.
"The delay in concluding the investigation was caused by an initial lack of co-operation from Rangers FC.
"The investigation has now been completed and, in the view of the SPL, there is a prima facie case to answer in respect of its rules."
I like the bits in bold...so there is still documentation and verification required :greengrin