Most trust funds will have some spendable capital as well as permanent capital. This is also known as accumulated unspent income.
The regulations for most Trust Funds explicitly provide for unspent income to be carried forward and used as income in subsequent years. The regulations for a few Trust Funds, however, specify that unspent income must be reinvested as an annual addition to permanent capital.
The CUEF income generated from spendable capital is also credited monthly also to the spendable part of a Trust Fund (cost centre ZZYB) under the transaction code NAAA.
Trust Fund managers should, where possible, ensure that spendable capital is not left to accumulate, but matched with appropriate expenditure, thereby relieving general departmental reserves. In some cases, it is understood that this is not possible, where reserves are being accumulated for long-term purposes such as contributing towards new buildings.