The letters were sent to Public Works Minister Thulas Nxesi, his predecessor Geoff Doidge, and former police minister Nathi Mthethwa.
Last week President Jacob Zuma said that letters of reprimand were sent to the ministers accused of misconduct with regards to Nkandla.
Treasury tells Concourt that Zuma must pay back R7.8-million for non-security upgrades to Nkandla homestead
The finance ministry said a reasonable percentage of the estimated costs that Zuma would pay comes to nearly 88 percent.
The national treasury will tomorrow reveal the amount President Jacob Zuma must pay pack for the non-security upgrades at his Nkandla homestead.
Thabo Mbeki believes the responsibility for SA's failure to achieve its constitutional ideals lies firmly at the feet of its leaders.