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Unit of account

Unit of account is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Unit of account rather than just read about it. In short: In economics, unit of account, sometimes called currency unit or monetary unit, is a standard unit of measurement of the market value of goods, services, and other transactions. Also known as a measure of relative worth and a standard of deferred payment, a unit of account is a necessary prerequisite for the formulation of commercial agreements that involve debt.

Unit of account — main illustration
Unit of account — illustration

Key takeaways

  • Unit of account belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Unit of account to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Unit of account from memory before moving on to harder problems.

Reference excerpt

In economics, unit of account, sometimes called currency unit or monetary unit, is a standard unit of measurement of the market value of goods, services, and other transactions. Also known as a measure of relative worth and a standard of deferred payment, a unit of account is a necessary prerequisite for the formulation of commercial agreements that involve debt. It is one of the functions of money. it is a basis for quoting and bargaining of prices and it is necessary for developing accounting systems. A given base unit of account (analogous to base unit of measurement) may have derived units of account or subunits; for example, one cent equals a hundredth (1⁄100) of a dollar or other base units of many currencies. Unit of account in economics allows a somewhat meaningful interpretation of prices, costs, and profits, so that an entity can monitor its own performance. It allows shareholders to make sense of its past performance and have an idea of its future profitability. The use of money, as a relatively stable unit of measure, can tend to drive market economies toward efficiency. Historically, prices were often given in a dominant currency used as a unit of account, but transactions actually settled by using a variety of coins that were available, and often goods, all converted into their value in the unit of account. Many international transactions continue to be settled in this way, using a notional value (most often expressed in the US dollar or euro) but with the actual settlement in something else. In historical cost accounting, currencies are assumed to be perfectly stable in real value during non-hyperinflationary conditions under in terms of which the stable measuring unit assumption is applied. The Daily Consumer Price Index (Daily CPI) – or a monetized daily indexed unit of account – can be used to index monetary values on a daily basis when it is required to maintain the purchasing power or real value of monetary values constant during inflation and deflation.

Problems Money is rarely perfectly stable in real value which is the fundamental problem with traditional historical cost accounting which is based on the stable measuring unit assumption. The unit of account in economics suffers from the pitfall of not being stable in real value over time because money is generally not perfectly stable in real value during inflation and deflation. Inflation destroys the assumption that the real value of the unit of account is stable which is the basis of classic accountancy. In such circumstances, historical values registered in accountancy books become heterogeneous amounts measured in different units. The use of such data under traditional accounting methods without previous correction can lead to confusing — (or even meaningless) — results.

History Coins or moneys of account were in most cases originally based on an existing coin or money but could remain in use as a unit of account even when the original coin or money was no longer in circulation. Historic examples of units of measure include the livre tournois, used in France from 1302 to 1794 whether or not livre coins were minted. In the 14th century Naples used the grossi gigliati, and Bohemia used the Prague groschen (2021). At any one time there might be two or three units of account in one region based on the local base, silver and sometimes gold coins, and each often expressed in L.S.D units in ratio 240:12:1. The Florentine gold florin, the French franc and the electoral rheingulden all became pounds (240 denari) of account. Units of account would often survive over 100 years despite the original coins changing composition and availability (e.g. the Castilian maravedi). In 1921, Henry Ford proposed the use of energy as the basis for currency instead of Gold Standard. Thomas Edison similarly put forward commodities as a basis. At the onset of the Great Depression, John P. Norton restated the "Electric Dollars" standard alongside gold. A modern unit of account is the European Currency Unit, used in the European Union from 1979 to 1998; its replacement in 1999, the Euro, was also just a unit of account until the introduction of notes and coins in 2002. Unit of account is the main way of calculating a carrier or ship owner's liability in relation to carriage of goods contracts in which the Hague-Visby Rules apply. In economics, a standard unit of account is used for statistical purposes to describe economic activity. Indexes such as GDP and the CPI are so broad in their scope that compiling them would be impossible without a standard unit of account. After being compiled, these figures are often used to guide governmental policy; especially monetary and fiscal policy. In calculating the opportunity cost of a policy, a standard unit of account allows for the creation of a composite good. A composite good is a theoretical abstraction that represents an aggregation of all other opportunities that are not realized by the first good. It allows an economic decision's benefits to be weighed against the costs of all other possible goods in that society, without having to refer to any directly. Often, this is most easily accomplished with money.

Finance The use of a unit of account in financial accounting, according to the American business model, allows investors to invest capital into those companies that provide the highest rate of return. The use of a unit of account in managerial accounting enables firms to choose between activities that yield the highest profit.

Accounting The unit of account in financial accounting refers to the words used to describe the specific assets and liabilities that are reported in financial statements rather than the units used to measure them. That is, unit of account refers to the object of recognition or display whereas unit of measure refers to the tool for measuring it. Unit of measure and unit of account are sometimes treated as synonyms in financial accounting and economics. Unit of measure in financial accounting refers to the monetary unit to be used; that is, whether it should be nominal units of money as opposed to units that are adjusted for changes in purchasing power over time.

See also

References

External links

Linguistic and Commodity Exchanges by Elmer G. Wiens. Examines the structural differences between barter and monetary commodity exchanges and oral and written linguistic exchanges.

Worked examples

Example 1 — a first encounter with Unit of account

Start with the simplest possible case. Write down what Unit of account claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Unit of account before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Unit of account ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Unit of account

In research
Unit of account appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Unit of account in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Unit of account is common in secondary-school and first-year university syllabi. It links to neighbouring topics Units of account, so understanding it makes those chapters shorter.
In everyday life
Look for Unit of account outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Unit of account in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Unit of account means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Unit of account out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Unit of account in simple terms?

In economics, unit of account, sometimes called currency unit or monetary unit, is a standard unit of measurement of the market value of goods, services, and other transactions. Also known as a measure of relative worth and a standard of deferred payment, a unit of account is a necessary prerequisi…

Why does Unit of account matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Unit of account?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Unit of account.

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