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Share of wallet

Share of wallet 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 Share of wallet rather than just read about it. In short: Share of wallet (SOW) is a survey method used in performance management that helps managers understand the amount of business a company gets from specific customers. Another common definition is the following: Share of wallet is the percentage ("share") of a customer's expenses ("of wallet") for a product that goes to the firm selling the product.

Key takeaways

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

Reference excerpt

Share of wallet (SOW) is a survey method used in performance management that helps managers understand the amount of business a company gets from specific customers. Another common definition is the following: Share of wallet is the percentage ("share") of a customer's expenses ("of wallet") for a product that goes to the firm selling the product. Different firms fight over the share they have of a customer's wallet, all trying to get as much as possible. Typically, these different firms don't sell the same but rather ancillary or complementary product.

Application Share of wallet is commonly used in B2B context, and in the finance, banking and retail sectors, to describe share-of-customer. Increasing share-of-customer is a key consideration increasing customer lifetime value. The reason is that retaining and growing customers is cheaper than acquiring new customers. Forte Consultancy says: "The percentage of a customer's spend that is with a given company over a given amount of time. For a gas retailer, for example, it's the number of times a given customer fills up their car's gas tank one month at their own pumps divided by the total number of times the same customer fills up their car's gas tank that entire month. So a customer who fills up his or her car's gas tank four times a month with three of those fills at one gas retailer is giving that gas retailer 75% share of their wallet." Under a share-of-wallet contract in a B2B context, contract terms are "designed to induce and reward customer loyalty by offering discounts when a customer contracts and commits to buying more than a threshold share in [a] category from the supplier".

Research Share of wallet and customer's loyalty and satisfaction are positively correlated. As a result, marketers in recent years have spent more resources on developing loyalty programs. Some researchers have argued that customer's satisfaction is not a strong enough predictor for share of wallet, and that marketers should focus on how a specific brand ranks in users' minds relatively to other brands in the category. This means that using net promoter score is not useful by itself when marketers are looking to increase share of wallet, as it does not look at the category as a whole. Previous research has also found that higher switching costs of loyalty programs leads to higher share of wallet – regardless of customer satisfaction. A common way to increase share of wallet for retailers is to use personalisation, and to offer shoppers discounts for related categories or products that could be relevant to them in order to increase their overall share of wallet. A Mckinsey report found using personalisation drives loyalty and share of wallet by 1–2% for retailers as well as decreasing marketing and sales costs by 10–20%.

See also Churn rate Customer acquisition cost

References

External links Trust Wallet

Worked examples

Example 1 — a first encounter with Share of wallet

Start with the simplest possible case. Write down what Share of wallet 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 Share of wallet 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 Share of wallet 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 Share of wallet

In research
Share of wallet 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 Share of wallet 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
Share of wallet is common in secondary-school and first-year university syllabi. It links to neighbouring topics Advertising, Audience measurement, Promotion and marketing communications, so understanding it makes those chapters shorter.
In everyday life
Look for Share of wallet 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 Share of wallet in 20 minutes

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

Frequently asked questions

What is Share of wallet in simple terms?

Share of wallet (SOW) is a survey method used in performance management that helps managers understand the amount of business a company gets from specific customers. Another common definition is the following: Share of wallet is the percentage ("share") of a customer's expenses ("of wallet") for a…

Why does Share of wallet 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 Share of wallet?

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 Share of wallet.

Tags

  • Advertising
  • Audience measurement
  • Promotion and marketing communications

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