science

Rainy day fund

Rainy day fund 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 Rainy day fund rather than just read about it. In short: A rainy day or rainy day fund is a reserved amount of money to be used in times when regular income is disrupted or decreased in order for typical operations to continue. In the United States, the term is usually used to apply to the funds maintained by most U.S. states to help deal with budget shortfalls in years where revenues do not match expenditures.

Key takeaways

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

Reference excerpt

A rainy day or rainy day fund is a reserved amount of money to be used in times when regular income is disrupted or decreased in order for typical operations to continue. In the United States, the term is usually used to apply to the funds maintained by most U.S. states to help deal with budget shortfalls in years where revenues do not match expenditures. This is critical to the operations of most state and local governments, which are legally prohibited (either by a state constitution or state laws governing local governments) from operating in a deficit position and/or taking on debt other than for specific purposes (and usually limited to a specific level) or from spending in excess of cash on hand and expected revenue, meaning that services would have to be cut in the absence of reserve funds. New York State Comptroller Thomas DiNapoli recommended in March 2010 that the state require that one half of surpluses be deposited into the rainy day fund. The Massachusetts rainy day fund has been the focus of tussles between the governor of Massachusetts and the Massachusetts General Court. Section 49-g of the Texas Constitution provides for that state's fund (officially called the "Economic Stabilization Fund") and caps the amount of the fund at $28.5 billion. Due to Texas' rapid economic growth, the actual fund balance has neared the cap. Some research suggests developing a national rainy day fund for states might improve state credit ratings and reduce capital financing costs for states.

See also Contingency fund Emergency fund

References

External links Massachusetts 'Rainy Day' Stabilization Fund

Worked examples

Example 1 — a first encounter with Rainy day fund

Start with the simplest possible case. Write down what Rainy day fund 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 Rainy day fund 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 Rainy day fund 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 Rainy day fund

In research: Rainy day fund 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 Rainy day fund 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: Rainy day fund is common in secondary-school and first-year university syllabi. It links to neighbouring topics Economic terminology stubs, Government budgets, so understanding it makes those chapters shorter.
In everyday life: Look for Rainy day fund 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 Rainy day fund in 20 minutes

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

Frequently asked questions

What is Rainy day fund in simple terms?

Why does Rainy day fund 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 Rainy day fund?

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 Rainy day fund.