
The law of diminishing marginal utility is a fundamental economic principle that applies to both consumers and businesses. It states that the added benefit of consuming more of a product or service declines as its consumption increases. This means that the satisfaction or utility derived from a product wanes as one consumes more of it. However, this law does not apply to money. Money has a static value, and its utility does not decrease as a person acquires more of it. This is because the value of money remains constant, and each additional unit of money provides the same level of satisfaction or utility. Therefore, while the law of diminishing marginal utility helps explain consumer behaviour and pricing strategies, it does not apply to the concept of money, where the value and utility remain consistent regardless of the amount possessed.
| Characteristics | Values |
|---|---|
| Does the law of diminishing marginal utility apply to money? | No, the utility of money doesn't decrease as a person acquires more of it. |
| What is the law of diminishing marginal utility? | It is the concept that the added benefit of consuming more of a product or service declines as its consumption increases. |
| Who is associated with the law? | Alfred Marshall, Bentham, Gossen, Kahneman and Tversky, Rabin, Marie-Esprit-Léon Walras, John Bates Clark, Knut Wicksell, Irving Fisher |
| What is marginal utility? | The degree of satisfaction or pleasure a consumer gets from an economic act. |
| What is the utility of money? | Money has a static value. |
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What You'll Learn

Money has a static value
Money is created and issued by a country's Central Bank or Government. It is a legal tender, and citizens are legally compelled to accept it. The value of money is inversely proportional to the price of goods and services; if the price level increases, the value of money decreases, and vice versa. Money is also used as a store of value, removing the problem of storing commodities under barter. It is the most durable and liquid asset, which can be kept for long periods without deterioration or wastage.
Money is of vital importance to the operation of the national and international economy. It facilitates trade and helps establish money and capital markets. Money is also essential for individuals, whether they are consumers, producers, or businessmen, as it helps in the general flow of goods and services from agricultural, industrial, and tertiary sectors of the economy. It also plays a role in large-scale specialisation and the division of labour in modern production.
While the law of diminishing marginal utility applies to many areas, it does not apply to money. This is because, unlike other commodities, the utility of money does not decrease as consumption or acquisition increases. This means that a person's satisfaction or pleasure derived from the economic act of acquiring money does not decrease with each additional unit of money acquired.
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The utility of money
In economics, utility refers to the satisfaction or benefit derived from consuming a good or service. It is a measure of the value a good or service brings to a consumer. Utility can be measured through "'utils", which are imaginary units used to quantify the usefulness of goods and services to consumers. The utility of a good or service directly influences its demand and price.
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How consumers spend money
The law of diminishing marginal utility does not apply to money because the utility of money does not decrease as a person acquires more of it. However, the law of diminishing marginal utility can be used to understand how consumers spend money. This is because the law predicts consumer behaviour, informing businesses' marketing and sales strategies.
The law of diminishing marginal utility states that the added benefit of consuming more of a product or service declines as its consumption increases. That is, the satisfaction or utility derived from the product wanes as the consumer has more of it. For example, a consumer might buy a certain brand of chocolate for a while. Soon, they find that their enjoyment of the chocolate decreases and they will look for an alternative.
The first unit of consumption for any product typically satisfies the consumer's greatest need and holds the highest utility. Every unit of consumption that follows holds less and less utility. Consumers handle the law of diminishing marginal utility by consuming numerous different goods, which keeps the utility high for each of them.
Businesses can use the law of diminishing marginal utility to understand consumer behaviour, price their goods and services, and diversify their offerings. For example, sales techniques for each customer are altered depending on the consumer's current marginal utility potential. A salesperson might suggest a second phone for work, a backup phone, or an upgrade to a customer who already owns a cell phone.
Consumers only have so much money to spend, and consequently, they try to spend the limited money they have on what will give them the greatest amount of satisfaction. Consumers will purchase those items that give the greatest marginal utility per dollar and are affordable or within their budget.
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Consumer behaviour predictions
The law of diminishing marginal utility cannot be applied to money. This is because the utility of money does not decrease as a person acquires more of it. The law of diminishing marginal utility states that satisfaction or happiness decreases with each additional unit of consumption of a good or service.
- Consumers will gain more satisfaction from the first unit of a product they purchase than from additional purchases of the same product. The marginal utility from each additional unit declines as consumption increases.
- Consumers will stop consuming additional goods as soon as the price exceeds the marginal utility.
- Consumers will always direct their spending towards where they are receiving the most utility.
- Consumers will handle the law of diminishing marginal utility by consuming numerous different goods, which keeps the utility high for each of them.
- Consumers will constantly compare the marginal utility from consuming additional goods to the cost they have to incur to acquire such goods.
- Consumers will buy goods as long as the marginal utility for each additional unit exceeds its price.
- Businesses will typically lower the price of a product due to diminishing marginal utility to match a consumer's diminishing willingness to buy it.
- Businesses can use the law of diminishing marginal utility to understand consumer behaviour, price their goods and services, and diversify their offerings.
- Businesses can use the law of diminishing marginal utility to find a balance between supply and production and to inform their marketing and sales strategies.
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Marginal utility and money
The concept of marginal utility, in general, can be applied to money in a broader sense. Money has a static value, and its possession strongly correlates with happiness. According to Bentham, the more wealth an individual possesses, the less total happiness an increment is likely to bring. This idea can be used by economists and governments to assess changes to a country's economy and inform policy decisions, such as advocating for a more equitable distribution of wealth.
The law of diminishing marginal utility can also be observed in the behaviour of consumers when they are deciding how to spend their money. Consumers tend to use their money to buy whatever offers the most marginal utility at a given time. For example, if every additional unit of a product offered the same value as the first, a consumer would spend all their money on that product. However, in reality, consumers will seek to maximise their utility by purchasing a variety of goods and services that provide the most value.
The law of diminishing marginal utility also applies to the concept of time preference. The first unit of consumption of a good or service yields more satisfaction than the subsequent units, and there is a continuing reduction in satisfaction with greater consumption. This can be observed in the behaviour of consumers who are willing to pay a higher price for the first unit of a product or service and then seek lower prices for additional units.
In summary, while the law of diminishing marginal utility does not apply to money directly, the concept of marginal utility can be applied to money in a broader sense to understand consumer behaviour, economic trends, and inform policy decisions.
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Frequently asked questions
No, the law of diminishing marginal utility does not apply to money. The utility of money does not decrease as a person acquires more of it.
The law of diminishing marginal utility states that the added benefit of consuming more of a product or service declines as its consumption increases. This does not apply to money because its utility does not decrease as its quantity increases.
The law of diminishing marginal utility states that the first unit of consumption of a good or service yields more satisfaction or utility than the subsequent units. There is a continuing reduction in satisfaction or utility for greater amounts.
The law of diminishing marginal utility is important in economics and business as it helps predict and understand consumer behaviour. It can be used by businesses to determine the optimal quantity of a good or service that a consumer is willing to purchase, and to inform their marketing and sales strategies.











































