Purpose: The purpose of this study is to empirically examine the influence of politics, culture and regulation on the budgetary slack and its impact on performance. Specifically, the purpose of this study is to analyze the influence of culture, politics and regulation on budgetary slack and performance in local government. Design/methodology/approach: Studies to develop model pengangaran good (good governance budgeting). Using the survey method. The total sample is 300 respondents in seven local governments in West Sulawesi. Respondents from the executive and legislative participate in the preparation of budgets in local government. The research instrument in questionnaire is tested using GSCA. Findings: The third structural coefficient of the relationship is positive, indicating all three positive relationships. That is, the higher political, cultural, regulatory, will result in the higher budgetary slack. Thus, if one wants to reduce the budgetary slack, then one needs to reduce the problems of politics, culture and regulations. Other results obtained (a) significant political, cultural and regulatory effect on performance either directly or indirectly through budgetary slack. The sixth structural coefficient of the relationship is positive, indicating all six positive relationships. That is, the higher political, cultural and regulatory variables will lead to higher performance either directly or indirectly through budgetary slack; (b) information asymmetry and budgetary slack significantly affect performance. The second structural coefficient correlation is positive, indicating both positive relationships. That is, the higher information asymmetry and budgetary slack will result in higher performance; (c) budgeting participation moderating influence budgetary slack variables that are false and strengthen moderation. That is, the higher the value of participation budgeting (M) affects increasing influence through budgetary slack (Y1) on the performance (Y2). Research limitations/implications: The results showed that the political, cultural and regulatory variables significantly affect the budgetary slack. The structural coefficient of the relationship of these three variables had positive-marked, indicating that the relationship of all those three was positive. Thus, the higher political, cultural and regulatory variables will result in higher budgetary slack. Political, cultural and regulatory variables significantly affected the performance both directly and indirectly through budgetary slack. Structural coefficient of the relationship of those six had positive-marked, indicating that the relationship of all those six was positive. Thus, the higher political, cultural and regulatory variables will lead to higher performance both directly and indirectly through budgetary slack. Originality/value: This paper conducts a research on mediation effect of budgetary slack in relationship between politics, culture and regulation toward performance; this research retests the research result from Fisher (2002) about information asymmetry and performance, Rubin (1993) about political, budgetary slack and performance, Scott (2000) about regulatory, budgetary slack and performance, Indriantoro (2000) about mediation of budgetary slack in relationship between politics, culture and regulation toward performance and Mardiasmo (2005) about budgetary slack and performance. No studies have examined this kind of relationship simultaneously. location of study (no previous research for this relationship): local governments in West Sulawesi. [ABSTRACT FROM AUTHOR]