Newly released cabinet papers reveal Justice Minister Amy Adams rejected advice that Teina Pora's compensation package be adjusted for inflation.
In June, the Government announced it was willing to pay Pora just over $2.5 million to compensate him for wrongful conviction and imprisonment.
Justice Rodney Hansen, who evaluated the compensation bid, recommended the payout be adjusted for inflation in his report.
However, Cabinet papers obtained under the Official Information Act show that advice was rejected by Adams, who said it wouldn't be appropriate as inflation indexing wasn't provided for when guidelines were put in place in 2000.
She also said the current compensation rate was generous compared to other jurisdictions and no other successful claimant had had their payments adjusted for inflation.