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Incremental budgeting
Most conventional budgets are incremental: planned expenditures are based on the
previous year’s expenditures plus an allowance for inflation or service improvements.
Such budgeting is easy to do and offers relatively stability. However, it never challenges
whether the activity is really necessary, or whether it could be carried out in other more
efficient ways.
Bean and Hussey (1998) have summarised the advantages and disadvantages of incre-
mental budgeting:
Advantages Disadvantages
• Simple • Historic
• Quick • No account taken of necessary future
• Accurate if little change in activity changes
• Assumes the base is accurate
• Compounds historic errors
Zero-based budgeting
Zero-based budgeting (ZBB) is one alternative to incremental budgeting, but is gener-
ally regarded as over-elaborate and unrealistic in most situations. However, selective
use of ZBB can be valuable, for example, taking a particular service where there may be
large inefficiencies and specifying from scratch what is required to achieve the out-
Advantages Disadvantages
• Proactive • Time-consuming
• Realistic and accurate • Requires clear objectives
• Links into business plans • Many organisations do not have a
zero base, as they have to work with
the staff, buildings and resources they
inherit from year to year
Unintended commitments
It is important to avoid unintended commitments. These can arise where approval is
given to make a start on a major capital project without taking adequate account of the
capital and recurrent cost implications in future years. Once the full costs become
apparent, it may be politically difficult to abandon the project. This strategy is often
used by project managers to establish incremental commitments to projects.
Consolidated budgets
Proper choices about resource use and transparency of decision-making require that all
resources are treated together in one budget. While there may be separate accounts for
specific services, these should all be brought together in one consolidated budget. The
non-transparent nature of ‘extra-budgetary’ accounts and special funds provides scope
for corruption and clientelistic decision-making.
Expenditure management
a) Financial procedures
Expenditure management procedures need to define rules about authorising orders and
payments, checking bills and recording payments. They must also include a method for
approving virements, also known as re-appropriations (that is, the ability to move
resources between budget heads).
Virements allow a degree of flexibility to deal with unforeseen or changed circum-
stances. A balance is required between the need for flexibility and the need for control
– if there is too much flexibility, the budget does not serve the purpose of determining
what happens.
b) Revised or supplementary budgets
Unforeseen or changed circumstances can also be handled by revised or supplementary
budgets during the course of the year, but these undermine the credibility of the origi-
nal budget. Frequent revisions make nonsense of the budgeting process, and revised
budgets may be subject to less rigorous scrutiny than the original budget, raising issues
about political choices and transparency. There is also the problem of where additional
resources come from, if they are needed. If budgets are revised so that they can allocate
Note
1 Under a cash accounting system, it is possible for unpaid debts to accumulate without these
being apparent from the accounts. This has resulted in huge problems of inter-agency arrears
in many countries, including Kenya, and has disguised the fact that many local authorities
are effectively insolvent. On the other hand, use of accruals accounting on the revenue side
can present a dangerously misleading picture where revenue collection performance is poor,
since unless the debtors position is examined, what the accounts show is the revenue due
rather than what has actually been received.