Blog · Territory, capacity and quota planning · Finance and FP&A teams
Performance budgeting connects funding with measurable results, while zero-based budgeting requires activities to justify their funding. Compare the approaches on the same program costs, service levels and outcomes, with a reconciliation of the final allocation.
Performance budgeting and zero based budgeting compare spending from different starting points: results in the first case, justification of activities in the second. A company can use both on the same program rows, but it must distinguish evidence about outcomes from the decision about which services to fund.
Performance budgeting connects proposed spending with the work and results expected from it. An output is a service delivered; an outcome is the subsequent result the business wants. Completing a customer onboarding is an output. The customer successfully using the product afterward is an outcome.
The Georgia Municipal Association's guide to budget types distinguishes performance measures such as workload, cost per unit and effectiveness from zero-based review of programs at alternative funding levels. Although its examples concern local government, the same distinction is useful when a company's finance team reviews funded programs.
| Question | Performance budgeting | Zero-based budgeting |
|---|---|---|
| Starting point | Goals and evidence about results | Justification of activities and service levels |
| Main comparison | Cost, outputs, outcomes and targets | Alternative packages, costs and consequences |
| Typical measure | Cost per completed service or successful outcome | Funding and result expected at each service level |
| Treatment of existing spending | Assessed against performance evidence | Must be justified alongside alternatives |
| Main decision | Whether funding supports the required results | Which activities and levels should receive funding |
| Main risk | Mistaking a convenient metric for value | A large review effort with weak alternatives |
Zero-based budgeting covers the full justification process. Here, the focus is how that process differs from evaluating spending through performance measures.
An invented US software company has three customer-onboarding programs. All costs below are annual USD operating costs, including each program's assigned share of support costs. Completed onboardings and successful activations refer to the same customer cohorts.
For this example, a successful activation means the customer reaches the company's defined usage threshold within 30 days after completing onboarding. Only cohorts with a complete observation window are included. The figures are illustrative, not external benchmarks.
| Program | Annual cost (USD) | Completed onboardings | Successful activations | Cost per completion (USD) | Cost per activation (USD) |
|---|---|---|---|---|---|
| Guided onboarding | 180,000 | 900 | 720 | 200.00 | 250.00 |
| Group clinics | 120,000 | 600 | 420 | 200.00 | 285.71 |
| Partner-led onboarding | 100,000 | 400 | 280 | 250.00 | 357.14 |
| Total | 400,000 | 1,900 | 1,420 | 210.53 | 281.69 |
Cost per activation = Program cost / Successful activations
Activation rate = Successful activations / Completed onboardings
The guided program activates 720 / 900 = 80% of completed customers. Group clinics and partner-led onboarding each activate 70%. Currency unit costs are rounded to two decimal places; totals use the underlying counts and costs.
Company cost per activation is 400,000 / 1,420 = $281.69. Do not average the three program ratios: the programs have different costs and volumes. The check is that the three cost rows sum to $400,000 and the activation rows sum to 1,420 before division.
Management has an additional $60,000 available. Program owners submit two mutually exclusive expansion options:
| Expansion option | Additional cost (USD) | Additional completions | Additional activations | Cost per additional activation (USD) |
|---|---|---|---|---|
| Expand guided onboarding | 60,000 | 300 | 240 | 250.00 |
| Expand group clinics | 60,000 | 200 | 120 | 500.00 |
The performance case favors guided onboarding if these outcomes are credible and comparable. It expects more additional activations for the same additional spending. The marginal cost is the relevant comparison for this expansion; the existing average does not establish how extra capacity will perform.
After selecting guided expansion, the approved performance budget is:
| Program | Approved cost (USD) | Planned completions | Planned activations |
|---|---|---|---|
| Guided onboarding, expanded | 240,000 | 1,200 | 960 |
| Group clinics, standard | 120,000 | 600 | 420 |
| Partner-led onboarding, standard | 100,000 | 400 | 280 |
| Total | 460,000 | 2,200 | 1,660 |
Expected overall cost per activation becomes 460,000 / 1,660 = $277.11. That is a planning result, not proof the expansion causes better outcomes. Check customer mix, quality and whether enough suitable demand exists.
The GAO's original results-oriented budget framework cautions that resource allocation cannot be mechanically linked to results. Performance evidence informs management judgment; it does not remove it.
A zero-based review first asks why each program and service level should exist. Previous funding is evidence about the operation, not an automatic entitlement.
Suppose owners submit these minimum and standard packages. Each figure is the total for that service level; packages within a program are alternatives, not amounts to add together.
| Program | Minimum cost (USD) | Minimum activations | Standard cost (USD) | Standard activations |
|---|---|---|---|---|
| Guided onboarding | 120,000 | 420 | 180,000 | 720 |
| Group clinics | 80,000 | 240 | 120,000 | 420 |
| Partner-led onboarding | 70,000 | 160 | 100,000 | 280 |
| Total | 270,000 | 820 | 400,000 | 1,420 |
Each owner explains the customers served, work required, staffing and contract commitments, alternatives, and consequences of stopping or reducing service. The guided and clinic expansion options remain the same as above.
Management could justify standard service for every program, then fund guided expansion. The selected rows would match the performance budget, but the reasoning includes the decision to retain all three activities. The bridge is explicit:
Selected funding = 270,000 minimum packages + 130,000 to reach standard service + 60,000 guided expansion = 460,000
Expected activations = 820 + 600 + 240 = 1,660
Neither approach guarantees that allocation. A contract requirement, a different strategic priority or weaker evidence for guided expansion could change the selection.
Use performance budgeting for recurring reviews where activities are established and results can be measured credibly. Use a zero-based review when management needs to challenge the service portfolio or inherited cost structure. Apply the deeper review selectively if full annual justification would consume more effort than the decision warrants.
Finance owns cost reconciliation and consistent allocation. Program owners own service assumptions and performance evidence. Leadership decides priorities and approves funding. Keep later expectations separate from the approval, as explained in budget vs forecast.
For budgeting from activity volumes and resource rates, see activity-based budgeting. The education zero-based budgeting guide addresses the different service constraints in that setting.
Bring approved program budgets, actual-cost exports and operational-results files with matching program and period fields. Covirage maps the columns, and its tools compute and check spending differences and cost-per-result measures; the external AI model explains the result with every figure traced to its rows. Create a free Covirage account and bring a sample of your own data.
See cost variance analysis for the supporting workflow.
Yes. Use zero-based review to compare activities and service levels, then attach performance measures to the approved packages. The justification establishes why funding is needed; the performance review checks what was delivered and whether the original assumptions still hold.
No. Cost per result is one input to a decision. Managers also need service quality, customer complexity, risk and strategic priorities. A cheap program with weak or unsuitable outcomes may be less valuable than a more expensive program serving a harder problem.
No. Zero is the starting point for justification, not a predetermined funding outcome. Managers assess alternatives and consequences, including minimum service requirements and contractual commitments, before selecting packages that fit the available resources.
Use program-level costs, service volumes, outcome definitions, measurement dates and approved targets. Costs and results must cover matching activities and periods. Record how shared costs are assigned so changes in allocation do not look like changes in operating performance.