18
discretionary
effects.
discretionary
tax
receipt
in
year
2
the
to
years
year
are
receipts
the
actual
preceeding
year
rates
in
receipts
that
year's
be
actual
Ti, j
be
j'th
year Dj
be
tax
if series
f_lows -
year
I
years
receipts actual
year
t stated
in
receipts
the
year in
year
rates•
e.g.
i,
by
in
j'th
adjusted
the my
year
t
in
the
the
In
3
ill
obtained
receipts.
receipts
revenue j'th
is
based
in
_.e,
yield
changes, as
tax
s_e_
ratio
of
reference
symbols,
le_
year to
the
i'_h
rates,
the Then
tax
Tj
re_erence
a
actual
rates,
the
l.rates,
Of
enacted,
1
Second,
t-
_he
is
year
annual
effect
from
measure to
the
year
year's
to
the
etc.
to
revenue
eliminated
which
"adjusted"
tax
the
converted
converted
the
is
2 rates,
expressed
less
in
are
year
multiplying
I,
measure
receipts
receipts
First,
effect
the
discretionary
action
xn
year
chosen
on
of
as
the
reference
proportional
year
adjustment
the method
Cleaned is
•
T1 ,1 = T1 TI,2
= T2
TI,3
= TI,2
- D2 +
(T3
- D3
- T2 )
TI,2 T2
or
T1,3
= T1,2
-
T2)
" T2
w
TI,j
= TI,j-1
+
(Tj
-
Dj
-
Tj_
1).
TI.j-1 T_. .
(4)
as