Wisconsin's Pension Fee Bill Rose With Performance, Not Despite It

A number like this invites a fast verdict: Wisconsin's public pension paid outside money managers $1.38 billion in 2025, up 14.0% from $1.21 billion the year before, according to the Wisconsin Legislative Audit Bureau's June 2026 audit of the State of Wisconsin Investment Board (SWIB).▸ That verdict doesn't survive the audit's own arithmetic. Private equity fees alone rose $113.2 million -- about two-thirds of the entire increase -- and SWIB's own explanation is that private equity/debt investment performance improved from 7.2% to 11.3% between 2024 and 2025. Performance fees are built to rise when investments perform well; that is what they are designed to do.

SWIB's external investment management fees "typically include two components: base fees and performance fees.▸ Base fees are calculated as a proportion of assets invested, and performance fees are typically calculated based on investment returns." Most of these fees never appear as a line-item bill from SWIB to a vendor -- they're netted directly out of reported investment gains by the external managers themselves, then disclosed to the audit team. That structure means a fee total climbing 14% in a year when the fund's own returns climbed even faster (Core Fund net investment income rose 75.6%, from $10.3 billion to $18.1 billion) is closer to the system working as designed than to a spending problem.

The fee total rose in a year when SWIB was, if anything, moving in the opposite direction on external reliance.▸ The share of Retirement Funds assets managed internally by SWIB rose to 46.8% as of December 31, 2025 -- the highest share since 2021's 49.0%, reversing three straight years of decline to a low of 37.9% in 2022. SWIB staff attributed the shift to discontinuing certain externally managed investments in favor of internal management. The dollar fee total still rose, because the externally managed slice of a fund that grew 19.8% in a single year -- to $226.6 billion in total investment assets -- got a smaller share of a much bigger, better-performing pie.

Both funds beat their own benchmarks in 2025: the Core Fund returned 14.4% against a 13.6% benchmark, and the Variable Fund returned 22.0% against a 21.8% benchmark.▸ The Retirement Funds exist to pay benefits to a specific, countable group: the Department of Employee Trust Funds reported 703,515 people participating in the Wisconsin Retirement System as of December 31, 2024 -- 269,249 still working and contributing, 241,125 already drawing benefits, and 193,141 no longer contributing but not yet drawing them. Spread evenly across that group, the 2025 fee total works out to roughly $1,961 per participant -- not a charge to any individual account, but a way to size a number that otherwise reads as an abstraction.

This is not a story about a finding.▸ The Legislative Audit Bureau issued unmodified opinions on both funds' financial statements and reported that, within the limited scope of a financial-statement audit, it did not identify any internal-control deficiencies it considers material weaknesses, while cautioning that undetected ones may still exist. Separately, tests of compliance with laws, regulations, and contracts disclosed no instances of noncompliance. The story here is scale and mechanism -- how much of a three-quarter-million-person pension fund's investment cost is contractually tied to performance, and how that number reads when performance is unusually good.