It took a jury just over six hours to find Wayne Bracken guilty of kidnapping and murdering Auckland father-of-one Jack Davis.
Co-accused Northland farmer Neville Dangen, 24 was found not guilty of the same charges.
The jury of six men and six women had heard nearly seven weeks of evidence and started their deliberations in the High Court at Whangarei late this morning.
After returning to court once with a question the jury were ready to deliver their verdicts by 5.45pm.
Crown prosecutor Mike Smith said 30-year-old Mr Davis was kidnapped and "hog tied" before being driven into remote bush where he was murdered with a thistle grubber.