Interest Rate as the Price of Present Consumption
The interest rate can be understood as the price paid to bring spending power from the future into the present. It quantifies the cost of consuming goods and services now instead of later.
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Introduction to Microeconomics Course
The Economy 2.0 Microeconomics @ CORE Econ
Ch.9 Lenders and borrowers and differences in wealth - The Economy 2.0 Microeconomics @ CORE Econ
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Simplifying Assumption in Lending Models: Exogenous Interest Rate
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Consider an individual's decision between 'consumption now' and 'consumption later'. Their initial situation before any financial transaction is represented by an endowment point. They can choose any combination of consumption now and later along a downward-sloping feasible frontier that passes through this endowment point. If this individual's optimal choice results in a level of 'consumption now' that is greater than their initial endowment for 'consumption now', which of the following statements must be true?
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An individual is deciding how much to consume now versus in the future. In the graphical model representing this choice, the slope of the line representing all possible consumption combinations they can achieve through borrowing or lending is determined by their personal degree of patience.
An individual is deciding how to allocate their consumption between the present and the future. Their options are represented by a downward-sloping feasible frontier, and their preferences are represented by indifference curves. At their current consumption plan, which is a point on the feasible frontier, they are willing to give up 1.05 units of future consumption to gain 1 unit of present consumption. The market allows them to exchange 1 unit of present consumption for 1.10 units of future consumption by saving. To reach a higher level of satisfaction, what should this individual do?
The Graphical Determination of Borrowing and Lending
An individual makes a choice between consumption today and consumption in the future, constrained by their initial resources and the market interest rate. Match each economic description below to the corresponding feature of the graphical model that represents this choice.
Inferring Preferences from Intertemporal Choice
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Figure 9.3: Comparing Julia's Feasible Frontiers at 10% and 78% Interest Rates
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Learn After
Calculating the Cost of Early Consumption
Imagine an individual is deciding how much of their income to spend this year versus how much to save and spend next year. If the market interest rate unexpectedly increases, what is the most direct economic consequence for their decision?
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A zero interest rate means that there is no opportunity cost to consuming a good today rather than consuming it in the future.
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The interest rate acts as the 'price' of shifting consumption between the present and the future. Analyze the following economic descriptions and match them to the scenario they best represent.
An individual is weighing their options for a portion of their income. They find that they are equally happy with either spending an additional $100 today or saving it to have an additional $108 one year from now. Which statement best analyzes this individual's situation?
When economists describe the interest rate as the 'price' of consuming now, they are referring to the cost of bringing future ____ into the present.
Intertemporal Consumption Choices
Welfare Effects of Interest Rate Changes