Der kan dog forekomme forskellige former for garantier afhængig af retsgrundlaget, den type transaktion, garantien dækker, varigheden osv. Her skal blandt andet nævnes følgende (listen er ikke udtømmende):
However, various forms of guarantee may exist, depending on their legal basis, the type of transaction covered, their duration, etc. Without the list being exhaustive, the following forms of guarantee can be identified: