Classic Foundations of Public Budgeting Theory

This lesson explains several core ideas in classic public budgeting scholarship using Irene Rubin’s review, Public_Administration_Review_-_2014_-_Rubin_-_Past_and_Future_Budget_Classics__A_Research_Agenda. The central themes are incrementalism, the political nature of budget allocation, and the reason budget makers usually consider only a narrow set of feasible alternatives.

Why budgeting is not just a technical exercise

A central classic insight is that budgeting cannot be understood as a purely rational comparison of all possible public needs. Rubin explains that there is often “no common denominator” that allows decision makers to rank very different claims, such as “roads for farmers” versus “buses for city dwellers.” Because these demands reflect different groups, places, and interests, budgeting becomes a political process. In this view, politics is the way conflict among competing claims is addressed and resolved, as discussed in Public_Administration_Review_-_2014_-_Rubin_-_Past_and_Future_Budget_Classics__A_Research_Agenda.

This means public budgets are not simply neutral spending plans. They are also records of past political compromises and current struggles over whose priorities will be funded.

Incrementalism: change usually happens in small steps

One of the best-known classic ideas in budgeting is incrementalism. Rubin summarizes the argument that budget allocations tend to change only a little from year to year. Instead of rebuilding the budget from zero each cycle, officials usually adjust existing spending patterns at the margins.

According to Public_Administration_Review_-_2014_-_Rubin_-_Past_and_Future_Budget_Classics__A_Research_Agenda, this happens because the current distribution of funds already reflects the relative power of groups and interests. If last year’s budget embodied a workable political settlement, then the next year’s process often starts from that settlement rather than reopening every question.

• Existing programs already have supporters.
• Past allocations represent established political agreements.
• Small adjustments are easier to negotiate than sweeping redesigns.
• Stability reduces conflict and decision costs.

In short, incrementalism suggests that budget outcomes are usually stable because the politics behind them are stable. Rubin states the implication clearly: if budgeting reflects politics, then major budget change requires political change.

Why only a limited set of options is usually considered

Classic budgeting theory also argues that decision makers do not examine every conceivable alternative. Rubin notes that only a few politically feasible options are weighed at a time. This sharply limits the number of alternatives under discussion.

There are several reasons for this limited search:

• Complexity: Governments face too many competing demands to compare all possibilities fully.
• Political constraints: Many theoretically possible choices are not acceptable to key actors or constituencies.
• Time limits: Budget decisions must be made on deadlines, which encourages attention to a manageable subset of options.
• Institutional continuity: Existing commitments narrow what can realistically be changed in a single budget cycle.

Thus, feasibility is not only economic or administrative. It is also political. An option may be imaginable in theory but ignored in practice if it lacks support, threatens powerful interests, or disrupts prior agreements too sharply.

The connection between politics and allocation

Classic budgeting scholarship ties resource allocation directly to power. Budget choices reveal which interests are organized, which claims are legitimate in the current political environment, and which programs have become entrenched. In this framework, allocation is less about finding one objectively best answer and more about negotiating among competing claims.

Rubin’s discussion in Public_Administration_Review_-_2014_-_Rubin_-_Past_and_Future_Budget_Classics__A_Research_Agenda emphasizes that the existing budget already contains a political history. Because of that, annual budgeting usually modifies inherited decisions rather than replacing them wholesale.

Limits of classic incrementalism

Rubin also notes that later developments made classic incrementalism less universally applicable. She points to Donald Kettl’s observation that Wildavsky’s theory grew out of a period of steady expansion in distributive spending. Later budgeting environments included rapid expansion, entitlements that locked in priorities, and “twilight zone” programs such as tax expenditures and loan programs. These changes, described in Public_Administration_Review_-_2014_-_Rubin_-_Past_and_Future_Budget_Classics__A_Research_Agenda, created more conflict and reduced the fit between newer realities and the original incremental model.

Even so, the classic theory remains foundational because it explains important baseline patterns:

• budgets often change gradually,
• politics shapes what gets funded, and
• decision makers usually compare only a small number of workable choices.

Key takeaways

• Classic public budgeting theory treats budgeting as a political process, not just a technical calculation.
• Incrementalism holds that budgets usually change in small amounts from year to year.
• Those small changes occur because existing allocations already reflect prior political settlements.
• Only a limited set of options is typically considered because decision makers face complexity, deadlines, and political constraints.
• Major budget change usually requires major political change.