Apply Zero-Based Budgeting

Rebuild every budget line from a zero baseline each cycle, requiring explicit justification for every expense, rather than incrementally adjusting the prior period's budget forward — surfacing costs that persist purely from institutional inertia.

Why This Is Best Practice

Adopted by: Peter Pyhrr developed zero-based budgeting at Texas Instruments in the late 1960s; Jimmy Carter, then Governor of Georgia, adopted it statewide in 1971 and later brought it to U.S. federal budgeting during his presidency. It has seen a modern revival as a private-equity cost-restructuring tool, most visibly at 3G Capital's portfolio companies including Kraft Heinz and Anheuser-Busch InBev, where it was applied systematically across acquired businesses to reset cost bases.

Impact: ZBB's central mechanism — decision packages ranked by value rather than expenses inherited from the prior year's baseline — routinely surfaces spending that survives purely because "that's what was budgeted last year," not because it's currently justified. 3G Capital's application at Kraft Heinz and AB InBev is documented to have produced substantial, rapid margin improvement in the years immediately following acquisition, by forcing every cost center to justify its budget from zero rather than negotiating an incremental increase.

Why best: This is a different tool than the cost skills already in this repo. design-cost-allocation-system (activity-based costing) makes existing costs visible and correctly attributed — it doesn't force a rebuild of the budget itself. calculate-break-even-analysis and unit-economics calculators are diagnostic math, not a budget-construction process. apply-theory-of-constraints targets throughput bottlenecks, not the cost base. ZBB is specifically a budget-construction methodology: incremental budgeting inherits and compounds unjustified spend indefinitely; ZBB resets the justification burden to zero every cycle, which is the only one of these mechanisms that directly attacks entrenched, un-rejustified cost.

Sources: Pyhrr, "Zero-Base Budgeting," Harvard Business Review (1970); Pyhrr, Zero-Base Budgeting: A Practical Management Tool for Evaluating Expenses (1973); documented 3G Capital ZBB application at Kraft Heinz and Anheuser-Busch InBev.

Steps

1. Define decision units. Break the organization into discrete cost centers or activities ("decision units") — a department, a program, a product line — each of which will build its own budget from zero rather than inheriting last year's figure.

2. Build a decision package for each decision unit. For every decision unit, require an explicit justification package: what the spend accomplishes, what happens if it's cut entirely, and at minimum one lower-cost alternative way to accomplish the same objective (a reduced-scope version of the same activity).