The dangers to China's economy and banking system from the large number of bad loans at the local level. Difficulties of absorbing bad loan losses by the central government as new loan losses are piled on top of previous loan losses from earlier efforts to tide over bad loans. Considering all nonperforming loans that may end up as sovereign debt China's national debt is upwards of 80% of GDP, say Walter and Howie. The lack of any serious change in policies, inability to control lending for state enterprises and local governments, the tax on savings with low interest rates which keeps down domestic consumption, and the absence of a serious discussion on these issues leaves China exposed to higher systemic risk from excessive financial leverage.