The thesis was purposed to know the effects of communication and motivation fac on performance in PT BPD Central Java of Surakarta branch and what is the dominant faktor affecting employee’s performance. The result of the analysis showed that performance was affected by 29 constant value unit plus 0,366 variable value unit of communication plus 0,154 value unit motivation. The natural logarithm result, the performance was affected by 1,677 variable constant value unit plus 0,417 variable value unit of Ln communication plus 0,173 value unit motivations. In discussion, t-estimation value for communication was significant at 5% and t-estimation value motivation for motivation was significant at 5%, each variable had value of 0,366 and 0m154 for model without natural logarithm and 0,417 and 0,173 for the model with natural logarithm. So, it can be concluded that both communication and motivation were affecting significant on performance or working achievement of PT Bank BPD Jateng Branch of Surakarta.