Taxpayer pension costs exceeded Illinois projections by $13.7 billion since 2013 – Illinois Policy

Illinois does a particularly poor job of figuring out how much money is needed to pay its public pensions: The past decade has seen the projections miss by 16%, which meant taxpayers needed to give $13.7 billion more than was estimated. If the estimates are off by the same percentage for the coming decade, taxpayers will face another $21.3 billion in unanticipated costs.