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A Model of the Relationship between the Interest Rate and the Profit Rate

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  • Zolea, Riccardo

    (Roma Tre University)

Abstract

In this paper we investigate the relationship between interest rate and profit rate. Considering that the bank must obtain on the invested capital a profit rate at least equal to the normal one, the bank interest rate can be calculated as the price of the bank output, i.e. the loan. The profit rate thus determines the interest rate, through the instrument of the price equation. Central to this study is the analysis of the best way to imagine such a price equation, considering the role of the central bank. We then move on to study the structure of interest rates and their relationship to the profit rate. Finally, by introducing the hypothesis of a bank profit rate permanently higher than the normal one, we confirm and better explain from an analytical point of view some insights expressed by Marx in Book III of Capital.

Suggested Citation

  • Zolea, Riccardo, 2022. "A Model of the Relationship between the Interest Rate and the Profit Rate," Centro Sraffa Working Papers CSWP55, Centro di Ricerche e Documentazione "Piero Sraffa".
    • Handle: RePEc:ris:sraffa:0055
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    References listed on IDEAS

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    More about this item

    Keywords

    bank profitability; interest rate; price equation; Marx; finance;
    All these keywords.

    JEL classification:

    • E11 - Macroeconomics and Monetary Economics - - General Aggregative Models - - - Marxian; Sraffian; Kaleckian
    • E43 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Interest Rates: Determination, Term Structure, and Effects
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages

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