Based on the Fiscal Responsibility Law, contributions for the funds come from fiscal surpluses, which are very dependent on the price of copper and economic growth. However, the PRF must receive a minimum contribution of 0.2% of GDP of the preceding year regardless of the effective fiscal revenues, and up to a maximum of 0.5% of GDP of the preceding year. Notwithstanding the above, the PRF may be funded from other Treasury’s assets or from the ESSF itself.
The ESSF could receive deposits each year where there is a fiscal surplus. It receives the resulting positive balance from the difference between the fiscal surplus and the contributions to the PRF. Also the ESSF could receive contributions come from sovereign debt, previews, or others authorized by law.