and the Township is required to contribute at an actuarially determined rate. The contribution requirements of plan members and the Township are established and may be amended by the plan's Board of Trustees.

The Township's contributions to P.E.R.S. for the years ending December 31, 2012, 2011 and 2010 were $823,495, $824,322 and $652,562, respectively, equal to the required contributions for each year, and to P.F.R.S. for the years ending December 31, 2012, 2011 and 2010 were $2,169,961, $2,442,131 and $1,824,930, respectively, equal to the required contributions for each year.

Chapter 384 of Public Laws 1987 and Chapter 6 of Public Laws 1990 requires the PERS to fund post-retirement medical benefits for those employees covered by the State Plan, who retire after reaching age 60 and accumulating 25 years of credited services. The cost of these benefits is actuarially determined and funded through contributions by the State in accordance with Chapter 62, P.L. 1994. Funding of the post-retirement medical premiums changed from a prefunding basis to a pay-as-you-go basis beginning in 1996, which increased the medical reserve by one-half of 1% of payroll.

Property taxes are an enforceable lien on the assessed property. Taxes are due on a quarterly basis on February 1, May 1, August 1 and November 1. All unpaid taxes become delinquent 8 days after the above due dates. The Township bills and collects its own property taxes as well as the taxes levied by the other taxing bodies within the municipality. Property tax revenues are recognized when collected. A reserve for uncollected taxes is established in the current operating budget to the extent that their collectability is improbable.

The composition of interfund balances as of December 31, 2012 is a follows:

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