Funding for interest rate support is available once a year, based on the principal and interest paid for that credit institution, excluding the overdue debt.

Project owners should meet but are not limited to these conditions: (1) Their projects have been complete, put into operation and refundable to the credit institution; (2) Projects are certified by national or local authorities that they contribute to the environmental protection effectively or help overcome environmental problems; and (3) Projects have not received any fund from VEPF.

Assistance level and legal authorities to decide: Interest rate support can not exceed 50% of the interest rate offered by the credit institution and can not exceed the ceiling rate defined by Ministry of Finance for VEPF.

Director of VEPF can decide which assistance level apply to a certain project; otherwise Chairman of the Management Council shall decide.