The Garden Bridge Trust says it is issuing termination letters closing all contracts with its suppliers.
Confidential discussions are taking place between those who were working on the Bridge, before the trustees finally abandoned the controversial Garden Bridge plan on 14 August.
A Garden Bridge Trust spokesperson said contractors and suppliers such as Willerby, Palmstead Nurseries and Deepdale were paid as they went along but commercially confidential discussions for further compensation are taking place now.
The Department of Transport underwrote a £9m cancellation liability.
The Trust said: "We won't be issuing figures or speculating on finances." They added that there is other money in its cash reserves "but it won't all go to Willerbys, Palmstead or Deepdale. All our contracts will be met and all contracts have cancellation clauses and we will honour all those agreements".
She said, for instance, Willerby contractor has done some preparatory work acquiring trees from Deepdale.
The Trust hopes to compensate suppliers in the "next few months".
It has to present an overall figure of costs to the Department of Transport so it can begin the process of paying out. A final report/accounts will be issued but may not break down what is paid to individual companies.
Contractors and suppliers said they not allowed to comment.