Agile Budgeting: Reallocate When Priorities Change
Strategy changes. Markets change. Capacity changes. But budgets have a habit of remembering last year.
That mismatch shows up in the data. In a 2024 McKinsey Global Survey, only about half of the 617 executives and managers surveyed said their companies effectively aligned budgets with corporate strategy. Just 53% said their organizations were in the habit of fully funding the priorities they had identified.
So what happens when conditions change after the budget has been agreed? A competitor launches a new product. A new strategic priority appears. Costs rise. Scarce capacity becomes the constraint. Do you keep funding the original plan, or reconsider what receives support?
What Agile Budgeting Actually Means
Agile budgeting does not mean importing an Agile software-development method into finance. It means recognising that an annual budget cannot anticipate every change that will matter during the year.
A budget should fund the priorities leadership has now, not preserve last year’s allocation by default. Kevin Darbelnet argues that enterprise agility means being able to reprioritize or stop initiatives as conditions change, not simply changing how projects are delivered.
Reallocate When the Case Changes
The point is not to keep changing budgets for the sake of appearing agile. It is to be able to move resources when the case for doing so changes. McKinsey's 2024 resource-allocation survey found an association between in-year resource reallocation and reported outperformance on both revenue growth and return on capital. And reallocation does not require the existing investment to have become a bad one: a still-worthwhile incumbent may need to be reconsidered when a credible new claim competes for the same resources.
Moving money is only part of the decision. A budget can fund an initiative that the organisation still lacks the capacity to support. Agile budgeting therefore means asking both where the money should go and whether the people, skills and other constraints can support the portfolio that decision creates.
But revisiting the budget only helps if you can make choices between competing initiatives. That requires a way to compare competing work under finite resources and decide what deserves support. Agile budgeting makes those choices something leadership can revisit as circumstances change, rather than something settled once a year. The RNLI case study shows that principle in practice: when priorities changed during COVID, the criteria were reweighted and the portfolio was rebalanced.
Review the Decision Without Reopening Everything
Agile budgeting does not mean putting every investment back on trial every month. One useful approach is staged commitment. Steve Jenner argues for deliberate continuation points instead of treating approval as automatic commitment all the way to the end. At those points, leadership can ask whether the evidence, priorities and constraints still justify the next commitment of resources.
Cadence matters too. Former PMI Board Chair LuAnn Piccard describes HP using a quarterly portfolio waterline that concentrated executive attention on the difficult choices near the boundary. Rather than reopening every initiative equally, leadership focused where the decision was genuinely contestable. That is a useful model for agile budgeting: review often enough to catch meaningful change, but focus decision time where a changed assumption could actually change the allocation.
Revisit the Allocation, Not Just the Numbers
The difficult part is not simply moving a number from one budget line to another. Reallocation changes who gets support, which commitments slow or stop, and whose assumptions are challenged. That is why the decision needs visible priorities and trade-offs, not just another round of negotiation.
The useful question is not “how do I win more budget for my project?” It is “given what has changed, where should scarce funding and capacity go now?”
Agile budgeting is the ability to reopen an allocation when priorities, assumptions or constraints change, then decide what still deserves support. That makes it part of a wider strategic planning process, not a finance exercise in isolation. And when new demand meets already committed resources, leadership has to decide what gives way.
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