International donations are accepted, but we don't know ANYTHING about how to make them tax-deductible, or even if they CAN be made deductible, and don't have the staff to handle it even if there are ways.
In pursuit of the Millennium Development Objectives, for instance, the budgetary authorities do not consider new customs duty technology, which, if made deductible, would allow an African country exporting in bulk to benefit from drawing rights on importing countries, which would be equal to the sum of customs duties sustained.