“Fiscal Headroom”: A Flawed Approach to Expenditure Prioritization
Posted by Marc Robinson
What is the best methodology for prioritizing expenditure in a medium-term context? One view is that the focus should be on the “fiscal headroom” —also referred to in francophone countries as the “marge de maneouvre.” I’ve seen this approach up close in two countries recently. It is an approach which is not only flawed in principle, but particularly unsuited to the post-crisis fiscal circumstances of most countries.
Some background first. The core of medium-term budgeting is the idea that multi-year estimates of the affordable ceiling for aggregate expenditure (based on projections of revenue and macroeconomic conditions, as well as a clearly-specified fiscal policy) are compared with “forward estimates” for expenditure (which project expenditure on an unchanged policy basis). Any gap between trend aggregate expenditure and affordable aggregate expenditure will thereby become evident. Expenditure policy decisions can then be made with a clear understanding of their implications for fiscal sustainability.
The “fiscal headroom” approach says that expenditure prioritization should focus mainly on how to allocate the gap between the aggregate expenditure limit and the forward expenditure estimates. It is assumed that this gap will be positive, providing an amount which can be spent on new initiatives. Prioritization is then about how to spend the money available for new initiatives.
There are two things wrong with this approach.
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