The PBGC recently announced that the premium rates for 2018 will remain the same. The per-participant flat premium rate for multiemployer plans is $28 for plan years beginning in 2018. Single employer rates increase in 2018 for both the flat rate premium and the variable rate premium. Multiemployer plans do not pay the variable rate premium. As a reminder, the PBGC premiums are yearly insurance premiums that pension plans are required to pay and are based on the number of participants in the plan and the funded status of the plan.
For more information on premium rates see: https://www.pbgc.gov/prac/prem/premium-rates