Pusaram

Personal finance · 14 min

Needs, wants and ABC analysis

Written and reviewed by Prashant Nandkishor Maheshwari (editorial review, 2026-10-18). Not yet checked by an independent subject specialist. How we review.

What you will learn

Sort spending into needs, priorities, wants and leakage, and use ABC analysis to find where attention is worth the most.

Why it matters

You rarely need to look at every expense. A few large items usually decide most of the outcome.

The ideas

Levels are a learning preference, not a credential. Switch any time.

Novice level

A need is something you must have for safety, health, work or basic living. A want is something you would like. Many items sit in between, and where they fall depends on your life.

Leakage is money that slips away without you choosing it: forgotten subscriptions, fees, impulse buys.

The purpose is not to cut things you value. It is to spend on purpose.

Basic level

ABC analysis ranks items from largest to smallest and groups them: A = the few that make up roughly the first 70 to 80% of spending, B = the next 15 to 20%, C = the long tail. These cut-offs are a convention, not a law.

Work A first: a small change on a big item beats a large change on a tiny one.

Advanced level

Add a second sort: how reversible and how flexible each item is, to separate 'could change this year' from 'locked in'.

Expert level

ABC thresholds can mislead with few categories or with categories defined at different sizes. Test sensitivity to how you group items.

Professional level

In inventory and cost accounting, ABC also appears as activity-based costing, a different method with a similar name. Do not mix them up.

Key terms

Need
Something required for safety, health, work or basic living.
Want
Something desired but not required.
Leakage
Spending you did not consciously choose.
ABC analysis
Ranking items by size and focusing on the largest group first.

Worked example

Illustration only. Monthly spending of ₹40,000: rent 15,000; food 8,000; transport 4,000; dining out 3,000; shopping 2,500; utilities 2,000; miscellaneous 1,800; phone 1,500; subscriptions 1,200; healthcare 1,000. Cumulative share: rent 37.5%, food 57.5%, transport 67.5%, dining out 75%. So rent, food, transport and dining out are the A group (75%). Shopping, utilities and miscellaneous are B (to 90.75%). Phone, subscriptions and healthcare are C. Note healthcare is C by size but is still a need: ABC ranks size, not importance.

Try it yourself

Rank your own spending from largest to smallest and mark cumulative percentages. Which A-group item would you most like to understand better? Write one question about it.

Nothing you write here is collected. Use paper or the workbook.

Check yourself

In ABC analysis, a C item is...
Where should you look first for the biggest effect?

A common misunderstanding

'Cutting small treats will fix it.' Often the larger lever is housing, transport, debt cost or income timing.

Local context

What counts as a need varies with place, household and ability: a car may be a luxury in one setting and the way to reach work in another.

References and review

  • Juran's Pareto principle literature on ABC classification in inventory management.
  • Consumer finance agency budgeting guides for your country.

Author and editorial reviewer: Prashant Nandkishor Maheshwari, 2026-10-18. Independent specialist review is pending. Spotted a mistake? Tell us.

Suggested next step

Continue with 'Budgeting with regular and irregular income'.