4 KudoZ points awarded for this answer. Comment: "*Sondertantieme* only occurred twice in the text I translated - both examples provided here. I further researched "tantieme", once you all put me on track: Eichborn, Wahrig, Duden, Routledge, Dietl/Lorenz, Woywode etc. universally indicate that "tantieme" broadly defined translates as *bonus*. Whether it should be specifically translated as a one-off, executive, profit-sharing, or other bonus then depends on how "tantieme" is modified, or how it is being used in the context. So, tantieme (in isolation) might in a specific context actually refer to author's royalties, secondary use royalties, profitsharing bonus, etc. or (in German) you might specify the sort of "tantieme" involved by adding "leistungsbezogene Tantieme", or "produktionsgebundene Tantieme" or what have you. Absent any additional, concrete information in the text I was translating that might indicate the specific character of this bonus, I went with the first, best, general translation offering the widest coverage. Clearly the "tantieme" referred to in my text is not an automatic tantieme in the sense of an author's royalty (or it wouldn't be a "sonder"tantieme) , and while it might in fact be a "profit-sharing" bonus, I can't be sure of that based on the context alone. I think "one-time" (AE) or "one-off" might word in this case, but it is possible the sonderantieme referred to in this text might actually be a profit-sharing bonus (just not specified more concretely here) and so possibly a bonus that is paid annually (not one-time at all)! In light of all these considerations, "special bonus" seemed the safest bet.:-) Thank you all! Each and every suggestion shed some light ;-) "