This scientific research aims to determine the effect of regional tax revenue projections to increase regional economic growth in Berau Regency. Autoregression and autocorrelation methods are used to predict the growth of Berau Regency's regional tax revenue for the following periods. It can be seen that the projected growth of regional tax revenue in 2022 is 16.72%, in 2023 it is 19.42%, in 2024 it is 21.25%, and in 2025 it is 22.48%. The growth of regional tax revenue and the economic growth of Berau Regency has a unidirectional relationship. This unidirectional relationship means that the increase in regional tax revenue growth obtained from taxpayers in Berau Regency will have a positive impact on increasing Berau Regency's economic growth. Significance of the effect of regional tax revenue growth on economic growth in Berau Regency which was tested through the t-test statistic. The results show that the t-count value is greater than the t-table value (3.471 > 2.777) and the significance value (Sig.) is smaller than the probability value (0.026 < 0.05), meaning that the growth of local tax revenue has a significant effect on Berau Regency's economic growth. By using the regression equation, namely: Y = 7.366 + 0.406X, then the economic growth forecast for Berau Regency is obtained as follows: in 2022 by 14.15%, in 2023 by 15.25%, in 2024 by 15.99%, and in 2025 by 16.49%.
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