This study is motivated by the increasing role of Islamic banking in the national financial system and the inconsistent findings of previous studies regarding the determinants of Third-Party Funds (DPK). This study aims to analyze the effect of Gross Domestic Product (GDP), inflation, the BI Rate, and the exchange rate on the amount of Third-Party Funds in Islamic Commercial Banks during the 2016–2024 period. The Covid-19 pandemic is also included as a dummy variable to capture changes in public saving behavior during the crisis period. This study employs a quantitative approach using quarterly time-series secondary data. The data were analyzed using multiple linear regression with the Newey-West estimator through Stata 17 to address autocorrelation problems. The results indicate that GDP, inflation, and the exchange rate have a positive and significant effect on Third-Party Funds, while the BI Rate has a negative and significant effect. Simultaneously, all variables significantly influence Third-Party Funds in Islamic Commercial Banks. These findings imply that macroeconomic stability plays an important role in strengthening fund collection in Islamic banking.
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