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Interest rate ceiling

Interest rate ceiling 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 Interest rate ceiling rather than just read about it. In short: An interest rate ceiling (also known as an interest rate cap) is a regulatory measure that prevents banks or other financial institutions from charging more than a certain rate of interest. Interest rate caps and their impact on financial inclusion Research was conducted after Zambia reopened an old debate on a lending rate ceiling for banks and other financial institutions.

Key takeaways

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

Reference excerpt

An interest rate ceiling (also known as an interest rate cap) is a regulatory measure that prevents banks or other financial institutions from charging more than a certain rate of interest.

Interest rate caps and their impact on financial inclusion Research was conducted after Zambia reopened an old debate on a lending rate ceiling for banks and other financial institutions. The issue originally came to the fore during the financial liberalisations of the 1990s and again as microfinance increased in prominence with the award of the Nobel Peace Prize to Muhammad Yunus and Grameen Bank in 2006. It was over the appropriateness of regulatory intervention to limit the charging of rates that are deemed, by policymakers, to be excessively high. A 2013 research paper asked

Where are interest rate caps currently used, and where have they been used historically? What have been the impacts of interest rate caps, particularly on expanding access to financial services? What are the alternatives to interest rate caps in reducing spreads in financial markets?

Understanding the composition of the interest rate The researcher decided that to assess the appropriateness of an interest rate cap as a policy instrument (or whether other approaches would be more likely to achieve the desired outcomes of government) it was vital to consider what exactly makes up the interest rate and how banks and MFIs are able to justify rates that might be considered excessive. He found that broadly there were four components to the interest rate:

Cost of funds Overheads Losses on non-performing loans Profit

Cost of funds The cost of funds is the rate of interest that the financial institution must pay to borrow the funds that it then lends out. For a commercial bank or deposit-taking microfinance institution this is usually the interest that it pays on deposits. For other institutions it could be the cost of wholesale funds, or a subsidised rate for credit provided by government or donors. Other MFIs might have very cheap funds from charitable contributions.

Overheads The overheads reflect three broad categories of cost:

Outreach costs: the expansion of a network or development of new products and services Processing costs: the cost of credit processing and loan assessment, which is higher with greater information asymmetry. General overheads: general administration and overheads associated with running a network of offices and branches The overheads, and in particular the processing costs, can drive the price differential between larger loans from banks and smaller loans from MFIs. Overheads can vary significantly between lenders, and overheads measured as a proportion of the loans made are an indicator of institutional efficiency.

Non-performing loans Lenders must absorb the cost of bad debts and recoup it from the interest rate that they charge. If a lender's credit screening processes improve in future, it should be able to bring down interest rates, while reckless lenders will be penalised.

Profit Lenders will include a profit margin that again varies considerably between institutions. Banks and commercial MFIs with shareholders to satisfy are under greater pressure to make profits than NGO or not-for-profit MFIs. Institutions require capital in order to operate, and whatever the source of this capital, the cost of providing it must be recouped.

The rationale behind interest rate caps Interest rate caps are used by governments for political and economic reasons, most commonly to provide support to a specific industry or area of the economy. Government may have identified what it considers being a market failure in an industry, or is attempting to force a greater focus of financial resources on that sector than the market would determine.

Loans to the agricultural sector to boost agricultural productivity as in Bangladesh. Loans to credit constrained SMEs as in Zambia. The researcher found it is also often argued that interest rate ceilings can be justified on the basis that financial institutions are making excessive profits by charging exorbitant interest rates to clients. This is the usury argument and is essentially one of market failure where government intervention is required to protect vulnerable clients from predatory lending practices. The argument, predicated on an assumption that demand for credit at higher rates is price inelastic, postulates financial institutions are able to exploit information asymmetry, and in some cases short run monopoly market power, to the detriment of client welfare. Aggressive collection practices for non-payment of loans have exacerbated the image of certain lenders. The researcher says that economic theory suggests market imperfections will result from information asymmetry and the inability of lenders to differentiate between safe and risky borrowers. When making a credit decision, a bank or a microfinance institution cannot fully identify a client's potential for repayment. Two fundamental issues arise:

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with Interest rate ceiling

Start with the simplest possible case. Write down what Interest rate ceiling 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 Interest rate ceiling 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 Interest rate ceiling 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 Interest rate ceiling

In research
Interest rate ceiling 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 Interest rate ceiling 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
Interest rate ceiling is common in secondary-school and first-year university syllabi. It links to neighbouring topics Interest rates, so understanding it makes those chapters shorter.
In everyday life
Look for Interest rate ceiling 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 Interest rate ceiling in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Interest rate ceiling 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 Interest rate ceiling out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Interest rate ceiling in simple terms?

An interest rate ceiling (also known as an interest rate cap) is a regulatory measure that prevents banks or other financial institutions from charging more than a certain rate of interest. Interest rate caps and their impact on financial inclusion Research was conducted after Zambia reopened an ol…

Why does Interest rate ceiling 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 Interest rate ceiling?

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 Interest rate ceiling.

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