In his "The World’s smallest macroeconomic model” (Krugman(1999)), Paul Krugman argued that under the assumption of price rigidity, a shortage of money supply leads to underemployment or recession, so increasing money supply can eliminate underemployment and restore full employment. But, how...

By an endogenous growth model with two-period overlapping generations structure and money holding of consumers, we examine the existence of budget deficit in an economy which endogenously grows by investments of firms. The main results are as follows. (1) Budget deficit is necessary for full...

I will show that if the propensity to consume from savings satisfies appropriate conditions, the debt-GDP ratio will not grow infinitely large and fiscal collapse will not occur. Using a basic macroeconomic model, with an overlapping generations model in mind, we show the following results: 1)...

Even under constant returns to scale technology there is a positive profit return if the goods are produced in monopolistic competition. By a two-periods overlapping generations (OLG) model with production in monopolistic competition under constant returns to scale in which the economy grows by...

Using a simple macroeconomic model and a model with microeconomic foundations about behavior of consumers and firms, we examine the budget deficit in a growing economy, and will show mainly the following results. 1) If the initial savings is positive (or investment of private firms is not...

Using a traditional neoclassical two-period overlapping generations model that takes into account consumers’ money holdings, we examine the existence of budget deficit in an economy which grows at the constant positive rate. The following results will be shown. 1) Budget deficit is necessary...

The aim of the paper is to show, using a simple two-period overlapping generations model in which goods are produced solely by labour in a monopolistically competitive industry, that a continuous budget deficit (including the interest payments on government bonds) is necessary to achieve and...

One of the most commonly used conditions for examining fiscal stability is the Domar condition. It compares the interest rate with the economic growth rate under balanced budget (excluding interest payments), and if the former is greater than the latter, public finances will become unstable, and...

It is said that public finance must be balanced at least in the long run. According to the so-called MMT (Modern Money Theory or Modern Monetary Theory) approach, however, this is not true. It is often pointed out that MMT lacks the mathematical analysis used in ordinary economic discussions....

This paper examines the relationship among budget deficit, inflation rate and debt to GDP ratio from the perspective of Functional Finance Theory and MMT (Modern Monetary Theory). Using an overlapping generations model under monopolistic competition with bequest motive of consumers, mainly we...