Notre Dame paid football coach Brian Kelly more than $600,000 in bonuses during the 2012 calendar year, according to the university's new federal tax return, which for the first time also listed a Fighting Irish football assistant coach from that year as one of the school's highest-paid employees.

Former football head coach Charlie Weis continues to receive more money from the school than any current athletics employee. Weis received nearly $2.1 million in 2012 as part of an ongoing separation agreement that, according to the return, includes additional annual payments through December 2015.

Weis became Kansas' head coach in December 2011, and he made another $2.5 million from KU for the 2012 season.

The only person with more compensation from Notre Dame than Weis in 2012 was vice president and chief investment officer Scott Malpass, who was credited with a total of nearly $4.3 million.

As a private school, Notre Dame is not required to make public its employment contracts.

Kelly had nearly $1.5 million in total pay from the school for 2012, according to the new return, which the university provided in response to a request from USA TODAY Sports. But the document notes that Kelly "is permitted to receive compensation from external sources with prior written approval from the University" and any such income is not reported on the return. Kelly's base compensation was reported as $698,140 – a little more than $25,000 more than the amount reported for calendar 2011.

Kelly's bonus compensation -- more than double his bonus pay in 2011 -- was for the team's on-field and academic achievements in a combination of the 2011 and 2012 seasons, according to university spokesman Dennis Brown. Notre Dame had an 8-5 record in 2011 and lost in the Champs Sports Bowl that December. In 2012, it went 12-1, with the loss coming in the BCS National Championship Game played in early January 2013. Under Kelly, Notre Dame's football team has continued its trend of annually having one of the best NCAA Graduation Success Rates among all football teams in the Bowl Subdivision.

Bob Diaco, the football team's defensive coordinator in 2012, was credited with a total of just over $672,000 – more than $495,000 in base pay and more than $88,000 in bonuses. Diaco left to become Connecticut's head coach after the 2013 season. Notre Dame did not list an assistant coach among its most highly paid employees on any of its past four tax returns.