The Pension Benefit Guarantee Corporation announced the 2023 premium rates.  The per-participant flat premium rate for plan years beginning in 2023 is $96 for single-employer plans (up from a 2022 rate of $88) and $35 for multiemployer plans (up from a 2022 rate of $32).

For plan years beginning in 2023, the variable-rate premium for single-employer plans is $52 per $1,000 of unfunded vested benefits (UVBs), up from a 2022 rate of $48.  The variable-rate premium is capped at $652 times the number of participants (up from a 2022 cap of $598).  Plans sponsored by small employers (generally fewer than 25 employees) may be subject to an even lower cap. Multiemployer plans do not pay a variable-rate premium.

Current and historical PBGC Premium Rates can be found here: https://www.pbgc.gov/prac/prem/premium-rates