Capital Structure Theories^325
cash flows. However, it too is characterised by the problem of establishing a suitable
norm for judging its adequacy.
Debt Service Coverage Ratio Financial institutions which provide the bulk of long-term
debt finance judge the debt capacity of a firm in terms of its debt service coverage
ratio. This is defined as:
DSCR =
!
, $
+7 )+ ,&
+ +
where DSCR = debt service coverage ratio,
PAT, = profit after tax for year i
DEPi, = depreciation for year i
INTi = interest on ions-term loan for year i
LRIi = loan repayment instalment for year i
n = period of the loan
To illustrate the calcularion of debt service coverage ratio, consider a project with the
following financial characteristics.
DSCR = ! %
! %
,& $,
+7 )+ ,&
= =
+
+ +
=
Normally, financial institutions regard a debt service coverage ratio of 2 as satisfactory.
If this ratio is significantly less than 2 and the project is otherwise desirable, a term loan
of a longer maturity may be provided. By the same token, if this ratio is significantly
more than 2, the maturity period of the loan may he shortened.
Probability of Cash Insolvency
In assessing the debt capacity of a firm the key question is whether the probability of
cash insolvency associated with a certain level of debt is acceptable to the management
and not so much whether a particular coverage norm is satisfied. Gordon Donaldson,
advocating the use of such an approach, has suggested that the analysis of debt capacity
may broadly involve the following steps:
(Rs. in lakhs)
Year 1 2 3 4 5 6 7 8 9 10
Profit after tax -2.0 10.0 20.0 25.0 30.0 40.0 40.0 50.0 55.0 55.0
Depreciation 12.0 10.8 9.72 8.75 7.87 7.09 6.38 5.74 5.17 4.65
Interest on long-
term loan 17.6 17.6 17.05 14.85 12.65 10.45 8.25 6.05 3.85 1.65
Loam repayment
Instalment - - 20 20 20 20 20 20 20 20