SUMMARY
The purpose of this study was to determine the effect of product, revenue and operating costs on profits at PT. Pos Indonesia (Persero) Jongke Surakarta Branch for the 2019-2021 period, either simultaneously or partially. In this study, the researcher used sekunder data with descriptive analysis method, classical assumption test (normality test, heteroscedasticity test, multicollinearity test, autocorrelation test) and hypothesis testing using multiple linear regression analysis, F test, t test, and R² test. Based on the results of product research, income and operating costs on profit, it is obtained that f count = 30,744 > f table = 2.96, with a significance of 0.000 <0.05, the variable number of products, income and operating costs simultaneously has a positive effect on profits at PT. Pos Indonesia (Persero) Surakarta Jongke Branch for the period 2019-2021. Based on product research on profit, the results obtained t arithmetic = 0.825 < t table = 2.055, with a significance t of 0.417 > 0.05, so that there is no positive and significant effect of Product on Profit at PT. Pos Indonesia (Persero) Surakarta Jongke Branch for the period 2019-2021. Based on income research on earnings, the results obtained tcount = 8.590 > ttable = 2.055, with a significance of t 0.000 <0.05, so that there is a positive and significant effect on profits at PT. Pos Indonesia (Persero) Surakarta Jongke Branch for the period 2019-2021. Based on the research of operational costs on profits, the results obtained tcount = - 6,133 < ttable = - 2.055, with a significance of t 0.000 <0.05, so that there is no negative effect on operating costs on profits at PT. PT. Pos Indonesia (Persero) Surakarta Jongke Branch for the period 2019-2021.