The National Trust Ecofund (NTEF) contributes to sustainable environmental protection and a better quality of life by implementing innovative holistic approaches and changing mindsets at the local and national levels.

The NTEF manages funds and finances projects for environmental protection, energy efficiency, and addressing climate change.

The funds managed by the NTEF are provided under Debt-for-Environment swap agreements, bilateral agreements under the international Assigned Emission Units (AEUs) trading mechanism under Article 17 of the Kyoto Protocol, the early auctions of the European Emissions Trading System, sale of greenhouse gas emission allowances for aviation activities, as well as under other types of agreements with international, foreign or Bulgarian sources of financing intended for environmental protection in the Republic of Bulgaria.