Zero-Based Budgeting: A Modern Approach to Justifying Expenditures

Every financial year, government departments and private organisations face the same tricky question: how much money do we need, and why? For decades, the easy answer was to look at last year’s budget and add a little more. Zero-based budgeting (ZBB) flips this logic on its head. Instead of assuming that past expenditures are valid, it demands that every rupee be justified from scratch, every single year. This makes ZBB one of the most rigorous, and arguably the most honest, budgeting approaches in public finance.

What is zero-based budgeting? 🔗

Zero-based budgeting is a financial planning method that requires every expense to be reviewed and justified from the ground up during each budget cycle, rather than adjusting the previous year’s figures. As the name suggests, the starting point is zero. Nothing is carried forward automatically. Each programme, activity, or line item must prove its worth before it receives any allocation.

This is a radical departure from incremental budgeting, which simply tweaks last year’s numbers by a percentage. Incremental budgeting is quick and predictable, but it has a fatal flaw: it assumes that whatever was funded last year is still necessary. ZBB rejects that assumption outright. It asks decision-makers to prove, again and again, that each expenditure is essential for the organisation’s objectives.

The origins: from Texas Instruments to the White House 🔗

The concept emerged in the late 1960s at Texas Instruments in Dallas, Texas. Peter A. Pyhrr, then a manager at the company, developed and successfully implemented ZBB, later publishing an influential article on the method in the Harvard Business Review in 1970. The idea quickly attracted attention beyond the private sector.

In 1973, Jimmy Carter, then the Governor of Georgia, hired Pyhrr to apply ZBB to the state’s executive budget. When Carter became US President in 1977, he extended the approach to the federal government. ZBB was officially eliminated from federal budgeting on August 7, 1981, but by then the method had already spread across the globe as a serious tool for fiscal discipline.

How zero-based budgeting works 🔗

ZBB is not just a philosophy; it is a structured process. Although the specifics vary across organisations, the core steps remain consistent. According to Pyhrr’s original framework, the method involves building a budget through decision packages, which are the fundamental units of analysis in ZBB.

Step 1: Identify decision units 🔗

The organisation is broken down into decision units. These are distinct cost centres, programmes, or activities, such as a government scheme, a research project, or a departmental function. Each unit must be clearly defined so that its costs and outputs can be measured.

Step 2: Prepare decision packages 🔗

For each decision unit, managers prepare a document called a decision package. A decision package identifies and describes a specific activity so that management can evaluate it and rank it against other activities competing for the same limited resources. A well-prepared package typically explains the purpose of the activity, its costs, the consequences of not undertaking it, and alternative ways of achieving the same goal.

Step 3: Rank the decision packages 🔗

Once packages are ready, they are ranked in order of priority or decreasing benefits to the organisation. This ranking is the heart of ZBB. It forces managers to compare activities against each other and make difficult trade-offs. Packages that cannot justify themselves against higher-priority alternatives are dropped or scaled down.

Step 4: Allocate resources 🔗

Funds are then distributed according to the ranked list, starting with the highest-priority packages. Activities that fall below the funding cut-off simply do not receive money, regardless of whether they were funded last year. This is how ZBB eliminates unnecessary expenditure while ensuring that strategic priorities receive adequate support.

Zero-based budgeting in India 🔗

The Indian government was an early adopter of ZBB among developing countries. The principle of ZBB was first initiated in the Department of Science and Technology in 1983, and in 1986 the Indian government adopted ZBB as a technique for determining the expenditure budget. The approach was promoted during the Seventh Five-Year Plan, and all ministries were directed to review their programmes and prepare expenditure estimates using the ZBB concept.

The Ministry of Finance formally introduced the approach through a circular, asking all ministries and departments of the Government to adopt the Zero-Base Budgeting approach with effect from the budget for 1987-88. However, full implementation proved elusive. Over time, the focus of budgetary reform shifted to other methods like outcome budgeting and performance budgeting, and ZBB’s application in government today remains limited to specific reviews rather than a comprehensive annual exercise.

Why the government turned to ZBB 🔗

The motivation was clear. India was facing growing budgetary deficits, and traditional incremental budgeting was not helping control expenditure. ZBB was seen as a way to combat waste and complacency by forcing a critical review of every scheme before budgetary provision was made, and to rationalise expenditure on social schemes by ensuring resources were optimally utilised for maximum impact. In theory, this promised a leaner, more accountable government.

Advantages of zero-based budgeting 🔗

ZBB’s appeal lies in the discipline it imposes on spending. When applied seriously, it can transform how an organisation thinks about money.

Efficient resource allocation: Because every expense is weighed on current merit, funds flow to activities that genuinely contribute to organisational goals. Historical spending patterns lose their grip, and high-impact programmes receive the attention they deserve.

Cost-effective operations: ZBB systematically uncovers wasteful spending and redundant activities. Managers are pushed to find cheaper alternatives, negotiate better contracts, and question the necessity of long-standing expenses. This focus on cost-effectiveness is why private sector firms periodically revive ZBB during economic downturns.

Greater accountability: Since each department must justify its budget from scratch, ZBB fosters a culture of responsibility and ownership over financial decisions. There is no hiding behind historical allocations. Managers must defend every line item, which naturally encourages more careful spending.

Better alignment with strategic goals: Because decision packages must be ranked according to organisational priorities, ZBB forces a constant re-examination of what the organisation is actually trying to achieve. Spending that no longer supports strategic objectives is quickly exposed.

Elimination of inflationary bias: In incremental budgeting, inefficiencies tend to get baked into future budgets through year-on-year increases. ZBB breaks this pattern by refusing to accept any baseline without fresh justification.

Disadvantages and challenges 🔗

For all its strengths, ZBB is notoriously difficult to implement, and its limitations are well documented. These drawbacks explain why many organisations, including the Government of India, have struggled to make ZBB a permanent practice.

Time-consuming and resource-intensive: Building a budget from zero every year takes enormous effort. Every department must justify all expenses, gather documentation, and build decision packages, often a heavy lift for large organisations. Managers may spend more time preparing paperwork than running their operations.

High managerial involvement: ZBB cannot be delegated entirely to the finance department. It requires senior managers across every unit to engage deeply with cost data, alternatives, and ranking decisions. In large government departments with thousands of schemes, this becomes impractical to do rigorously every year.

Threat to long-term investments: One of the sharpest criticisms concerns its effect on research and development. The annual justification process may favour immediate, short-term goals, and long-term projects like major R&D or capital expenditure, whose financial benefits are not immediately clear, can be unfairly disadvantaged. Production-oriented or revenue-generating departments often win the ranking contests, while exploratory work suffers.

Subjectivity in justification: Not every activity lends itself to neat cost-benefit analysis. Social schemes, diplomatic work, and preventive programmes often produce benefits that are hard to quantify. Managers may end up competing on the persuasiveness of their narratives rather than the true value of their programmes.

Resistance to change: Staff members accustomed to incremental budgeting often resist the demands of ZBB. Preparing decision packages feels like extra work, and there is a real risk that managers will game the system by presenting preferred projects as indispensable.

Difficulty with plan and non-plan expenditure: In the Indian context, a specific challenge has been the traditional division between plan and non-plan expenditure, which complicates the ranking of decision packages across different categories. This structural issue made comprehensive ZBB implementation in Indian ministries particularly difficult.

Where ZBB works best 🔗

ZBB is not a universal solution. It tends to shine in specific contexts and struggle in others. It is most effective in areas where costs are discretionary and results can be measured, such as advertising, training, administrative overheads, and certain operational functions. It works well when an organisation is under cost pressure, when strategic priorities are shifting, or when leadership suspects that waste has accumulated over time.

On the other hand, ZBB is a poor fit for functions that require stable, long-term commitment. Basic research, heritage conservation, public health surveillance, and similar activities need continuity, and subjecting them to annual elimination threats can damage their effectiveness. A hybrid approach, where ZBB is applied on a rolling basis to selected departments every few years, often works better than a blanket annual review.

ZBB in the modern budgeting landscape 🔗

Government budgeting in India has evolved considerably since ZBB’s introduction. Today, the Union Budget combines elements from several approaches. Performance budgeting links spending to measurable outputs. Outcome budgeting, first passed in 2005 and consolidated across ministries in Budget 2017-18, focuses on measurable results rather than inputs. Gender budgeting examines allocations from a gender equality perspective.

Within this mix, ZBB’s logic continues to exert influence even when it is not applied in its pure form. The insistence on justifying expenses, ranking priorities, and cutting low-value activities has become part of modern fiscal discourse. Private sector revivals in the 2010s, notably by firms like Kraft Heinz and Unilever, also reintroduced ZBB thinking into mainstream management. The tools have become more sophisticated too, with digital platforms making cost tracking and decision-package management far less painful than in the 1970s.

The bottom line 🔗

Zero-based budgeting is a powerful idea wrapped in a demanding process. It promises efficiency, accountability, and strategic alignment, but it asks a lot in return: time, attention, managerial engagement, and a willingness to question everything. For governments and organisations serious about cost control, ZBB offers a proven framework. For those hoping for a quick fix, it will disappoint. The honest verdict is that ZBB is best treated as a periodic discipline rather than an annual ritual, applied where it can do the most good and combined with other methods that better suit long-horizon investments.

What do you think? If you were a secretary in an Indian ministry today, which departments would benefit most from a zero-based review, and which ones should be protected from the annual justification cycle? And do you think ZBB’s failure to take root in Indian government owes more to its practical demands or to the political resistance it provokes?

References

1. https://www.ibm.com/think/topics/zero-based-budgeting
2. https://en.wikipedia.org/wiki/Peter_Pyhrr
3. https://en.wikipedia.org/wiki/Zero-based_budgeting
4. https://egyankosh.ac.in/bitstream/123456789/19309/1/Unit-12.pdf
5. https://www.gktoday.in/zero-based-budgeting/
6. https://www.nextias.com/blog/government-budgeting/
7. https://rajras.in/ras/mains/paper-1/accounting-auditing/basic-knowledge-of-performance-budgeting-zero-base-budgeting/
8. https://www.golimelight.com/blog/zero-based-budgeting
9. https://www.prophix.com/blog/zero-based-budgeting-pros-and-cons/
10. https://epm.adaptit.tech/blogs/zero-based-budgeting-expense-allocation/
11. https://www.pmfias.com/government-budgeting-in-india/