The biggest item in Philadelphia Mayor Nutter’s yearly budget request to City Council this week won’t be for police, prisons, or parks.

It will be for more than $500 million to stoke Philadelphia’s pension system, which pays retirement checks to ex-city workers and their survivors.

That pension tab will eat nearly $1 of every $5 the city raises from real estate, wage, business, and sales taxes. That’s up from $1 of every $16 a decade ago, noted city Finance Director Rob Dubow.

For everyone wondering why Philadelphia public schools are in such terrible financial shape, this is a very important clue. 

Pension system costly, complicated - Philly.com