Butler County’s pension fund is almost 90 percent funded.

Controller Ben Holland said today at the county retirement board meeting that the plan has reached 88.7 percent funding, with $181.6 million.

Between 2013 and 2015, Holland said the plan’s unfunded liabilities have decreased from $41.9 million to $23 million.

He said the county’s retirement contribution has continued to decline due to the plan exceeding actuarial assumptions. For this year, the county’s funding requirement is slightly more than $5 million. The estimated funding amount was $6 million. Last year, the county’s contribution was $6.2 million.

Commissioner Bill McCarrier, board chairman, asked when the plan might reach 100 percent funding.

Holland said it could reach that point in 15 years.

“Once you’re over 85 percent, it’s truly considered a well-funded plan,” Holland said.

The county is paying an average of $819,431 per month in benefits. The plan has 573 members paying into it, and the county has 574 retirees receiving benefits.