We present a study investigating the effect of tense (past vs. future) on the computation of scalar implicatures in connection with the German quantifier einige ‘some’ in an interactive experiment, which included a financial incentive for participants to consider whether another speaker would share their judgment. We tested the hypothesis that scalar implicatures are less frequently drawn in future tense than in past tense. In addition, we studied to what extent sets with various cardinalities are prototypical representatives of einige + N. We hypothesized that larger cardinalities are more prototypical representatives of the quantifier einige than smaller cardinalities (relative to the cardinality of the total set). We analyzed the experimental data with probabilistic Bayesian models with a linking hypothesis between participants’ responses and readings based on utility maximization in simple decision problems. In line with the hypotheses, we found that less scalar implicatures are drawn in future tense than in past tense, which replicates the results of previous research on English some, and that with an increase in set size acceptance of statements involving einige also increases.