Guidance for the contract services segment is unchanged. Contract services work for DOE at the former Portsmouth GDP was completed in September 2011, and revenue for the segment is expected to decline significantly in 2012. In prior years, contract work at Portsmouth represented approximately three-quarters of revenue for the contract services segment. USEC subsidiary NAC will represent a majority of revenue for the segment going forward, and we expect annual revenue for contract services in 2012 of approximately $85 million.
Total revenue is expected to be approximately $1.95 billion. Based on our view of revenue and expense, we expect to earn a gross profit of approximately $140 million, reflecting a gross profit margin in 2012 of approximately 7 percent, compared to 5 percent in 2011.
Below the gross profit line, we will have significant expenses related to the American Centrifuge project. Beginning in the fourth quarter of 2011, all project costs incurred have been expensed, including interest expense that previously would have been capitalized. We will expense cost under the RD&D program as incurred. We expect advanced technology expense and the transfer of certain assets to DOE valued at $44.6 million to total approximately $250 million in 2012, with about half of that amount having been expensed prior to the start of the RD&D program in June. Interest expense that previously would have been capitalized is expected to be approximately $40 million. Under the 80/20 cost share with DOE for the RD&D program, we expect to report Other Income of approximately $105 million for 2012. This assumes additional funding is authorized in addition to the $87.7 million authorized to date.
We have undertaken a review to align our organization with our evolving business environment and to reduce the size of our workforce over time. The recent agreements regarding the RD&D program and a 12-month extension of Paducah enrichment operations will stretch out the time period for additional workforce reductions. Further workforce reductions would require us to take additional charges for one-time employee termination benefits. We expect our SG&A expense to be approximately $58 million in 2012, a $4 million reduction from 2011, as our financial results begin to reflect the benefit of reductions in corporate expenses.