Reed,
J:—This
is
an
appeal
from
a
decision
of
the
Tax
Court
of
Canada
finding
that
the
plaintiff
was
not
entitled
to
deduct
$62.51
from
her
taxable
income
for
the
1980
taxation
year.
As
can
be
surmised,
the
amount
of
$62.51
is
not
the
motivating
factor
behind
this
appeal.
This
is
a
test
case
putting
in
issue
the
correct
characterization
of
certain
moneys
received
pursuant
to
a
retroactive
payment
of
wages
under
a
collective
bargaining
agreement.
The
collective
bargaining
agreement
covering
the
plaintiff’s
employment
as
a
public
school
teacher
in
Manitoba
expired
December
31,
1979
and
agreement
on
a
new
one
could
not
be
reached.
The
matter
went
to
binding
arbitration
in
October
1980.*
An
arbitration
award
was
made
in
December
1980.
It
determined
that
for
the
1980
taxation
year
the
plaintiff
should
receive
a
10.5
per
cent
increase
over
the
salary
she
had
received
in
1979
and
article
24
of
that
award
provided:
The
Board
of
Arbitration
determines
that
interest
on
retroactive
pay
for
the
1980
agreement
should
be
paid
to
members
of
the
Association
calculated
from
the
date
the
salary
was
payable.
The
interest
shall
be
computed
on
the
net
pay
of
the
member
(that
is,
the
gross
pay
after
deducting
therefrom
personal
income
tax,
unemployment
insurance
and
Canada
Pension
Plan
deductions)
and
shall
be
computed
at
the
lesser
of
eight
per
cent
per
annum
or
the
average
rate
at
which
the
Division
borrowed
funds
during
the
twelve-month
period
from
January
1,
1979
to
December
31,
1979.
A
collective
bargaining
agreement
incorporating
the
arbitration
award
was
executed
on
February
11,
1981,
its
operation
being
made
retroactive
to
January
1,
1980.
Article
17
of
that
agreement
provided
that
the
employer
would
pay:
.
interest
on
the
net
amount
of
any
retroactive
pay
which
may
be
paid
to
such
members
(that
is,
the
gross
pay
after
deducting
therefrom
personal
income
tax,
unemployment
insurance
and
Canada
Pension
Plan
deductions),
the
interest
to
be
calculated
from
the
dates
on
which
the
monies
would
have
been
due,
to
the
date
of
actual
payment.
The
interest
shall
be
computed
at
the
lesser
of
8%
per
annum
or
the
average
rate
at
which
the
Division
[the
employer]
borrowed
funds
during
the
twelvemonth
period
from
January
1,
1979,
to
December
31,
1979.
The
plaintiff
included;
as
interest
income,
the
$62.51
received
pursuant
to
this
article
when
calculating
her
income
for
the
1980
taxation
year.
She
then
claimed
a
deduction
under
subsection
110.1(1)
of
the
Income
Tax
Act
in
the
same
amount.
Subsection
110.1(1)
allows
a
deduction
of
interest
in
the
computation
of
taxable
income
up
to
a
maximum
amount
of
$1,000,
subject
to
certain
conditions,
none
of
which
are
relevant
to
this
case.
The
plaintiff
contends
that
the
$62.51
is
interest
and
properly
deductible.
The
defendant
contends
that
the
$62.51
is
not
interest,
and
not
deductible.
There
is
no
dispute
that
the
amount,
if
interest,
retains
that
character
even
though
it
arises
in
connection
with
employment.
Counsel
for
the
plaintiff
argued
that
if
the
sum
was
determined
to
be
interest
and
therefore
fell
within
paragraph
12(1
)(c)
it
could
not
be
classified
as
a
benefit
derived
from
employment
and
thereby
fall
into
paragraph
6(1)(a).
This
contention
was
based
on
the
rule
of
statutory
construction
which
requires
that
provisions
of
general
scope
must
be
read
subject
to
provisions
of
a
more
specific
nature.
It
was
pointed
out
that
paragraph
12(1)(c),
with
its
specific
mention
of
interest,
was
of
a
more
particular
nature
than
the
more
general
concept,
benefit
derived
from
employment,
found
in
paragraph
6(1)(a).
The
defendant
takes
no
issue
with
this
interpretation;
it
is
agreed
that
if
the
sum
in
question
is
properly
interest
then
it
is
interest
income
and
deductible.
It
is
common
ground
that
the
Income
Tax
Act
does
not
define
interest
and
that
the
various
sections
dealing
with
interest
therein
(12(1)(c);
110.1(1);
110.1(2);
110.1
(3)ff),
either
deeming,
or
excluding
certain
amounts
for
certain
purposes
as
interest
are
of
little
assistance.
One
must
look
to
the
general
principles
of
interpretation,
dictionary
definitions
and
the
jurisprudence.
In
this
regard
the
meaning
of
the
word
“interest”
in
ordinary
parlance
is
significant.
The
defendant's
argument
is
that
to
have
a
sum
characterized
as
interest
three
criteria
must
be
satisfied:
(1)
it
must
be
calculated
on
a
(day
by
day)
accrual
basis;*
(2)
it
must
be
calculated
on
a
principal
sum
or
a
right
to
a
principal
sum;
and
(3)
it
must
be
compensation
for
the
use
of
the
principal
sum
or
the
right
to
the
principal
sum.
There
is
really
no
dispute
respecting
the
need
for
these
criteria
or
the
existence
of
the
first
and
the
third
in
the
present
case.
The
sum
paid
was
clearly
calculated
on
a
day-to-day
accrual
basis.
Both
parties
agree
that
the
payment
had
the
character
of
compensation
for
the
use
of
money
withheld,
although
counsel
for
the
defendant
argues
that
if
I
should
find
that
the
second
criteria
was
in
fact
met,
then
the
third
would
thereby
become
unfulfilled.
It
is
argued
that
the
second
criteria
is
not
met
because
at
the
time
to
which
the
interest
refers
there
was
no
principal
sum
owing
to
the
plaintiff,
either
ascertained
or
ascertainable.
Until
December
1980,
the
plaintiff
did
not
have
the
right
to
any
salary
increase
to
which
interest
might
be
referable
(the
arbitration
board
could
have
awarded
the
employees
a
lower
wage
rate
than
the
1979
level
interim
wages
they
were
receiving).*
The
defendant
relies
on
Mr
Justice
Rand's
definition
of
interest
in
Reference
re
Validity
of
Section
6
of
the
Farm
Security
Act,
1944,
of
the
Province
of
Saskatchewan,
[1947]
SCR
394
at
411-12
for
this
contention:
Interest
is,
in
general
terms,
the
return
or
consideration
or
compensation
for
the
use
or
retention
by
one
person
of
a
sum
of
money,
belonging
to,
in
a
colloquial
sense,
or
owed
to,
another.
There
may
be
other
essential
characteristics
but
they
are
not
material
here.
The
relation
of
the
obligation
to
pay
interest
to
that
of
the
principal
sum
has
been
dealt
with
in
a
number
of
cases
.
.
.
from
which
it
is
clear
that
the
former,
depending
on
its
terms,
may
be
independent
of
the
latter,
or
that
both
may
be
integral
parts
of
a
single
obligation
or
that
interest
may
be
merely
accessory
to
principal.
But
the
definition,
as
well
as
the
obligation,
assumes
that
interest
is
referable
to
a
principal
in
money
or
an
obligation
to
pay
money.
Without
that
relational
structure
in
fact
and
whatever
the
basis
of
calculating
or
determining
the
amount,
no
obligation
to
pay
money
or
property
can
be
deemed
an
obligation
to
pay
interest.
[Emphasis
added.]
I
do
not
find
Mr
Justice
Rand's
comments
go
so
far
as
the
defendant
contends.
Those
comments
to
me
merely
say
that
in
determining
whether
a
certain
amount
is
interest
it
is
crucial
to
consider
to
what
it
relates.
If
it
is
paid
in
reference
to
“a
principal
in
money
or
an
obligation
to
pay
money”
then
a
relational
structure
exists
which
indicates
that
the
sum
is
interest.
In
the
present
case
the
sum
was
paid
in
reference
to
a
principal
sum
—
that
part
of
the
plaintiff's
salary
to
which
she
had
become
entitled
during
the
1980
year
but
which
had
not
been
paid
to
her
during
that
time.
In
my
view
Mr
Justice
Rand's
decision
does
not
address
the
issue
raised
by
the
defendant.
The
defendant's
position
is
also
founded
on
an
analysis
of
two
decisions
relating
to
interest
under
the
Income
Tax
Act:
that
of
the
Exchequer
Court
in
Huston,
Whitehead
and
Whitehead
v
MNR,
[1961]
CTC
414;
61
DTC
1233;
and
that
of
the
Federal
Court
of
Appeal
in
Perini
Estate
v
The
Queen,
[1982]
CTC
74;
82
DTC
6080.
This
is
a
more
difficult
contention
to
assess.
In
the
Huston
case
the
taxpayers
had
been
awarded
compensation
by
the
Canadian
government,
from
a
War
Claims
Fund,
for
property
(a
factory
located
in
Czechoslovakia)
which
had
been
owned
by
them
in
1939,
confiscated
by
the
Germans,
and
partially
destroyed
in
1945.
One
of
the
regulations
gov-
erning
the
amount
of
compensation
to
be
awarded
provided
for
three
per
cent
interest
on
the
property
loss
from
January
1,
1946
until
the
date
Treasury
Board
approved
the
claim
for
compensation
(in
that
case
October
10,
1958).
The
Minister
of
National
Revenue
sought
to
tax
this
three
per
cent
payment
as
interest
income.
The
taxpayer
contended
it
was
a
capital
payment.
Mr
Justice
Thurlow
agreed
and
said,
at
419
(DTC
1236):
As
I
see
it,
the
sums
in
question
are
not
income
from
property
because,
notwithstanding
the
exceedingly
broad
scope
of
the
statutory
definition,
the
appellants
during
the
period
from
January
1,
1946
to
October
10,
1958
in
respect
of
which
the
alleged
“interest”
was
computed,
in
my
opinion,
had
no
property
or
legal
or
equitable
right
of
any
kind
in
the
amount
on
which
the
alleged
“interest”
was
computed
..
.
And
at
412
(DTC
1237),
quoting
from
Simpson
v
Executors
of
Bonner
Maurice,
14
TC
580
at
593:
...
I
think
this
sum
first
came
into
existence
by
the
award,
and
no
previous
history
or
anterior
character
can
be
attributed
to
it
.
.
.
And
at
422
(DTC
1238):
...
No
principal
sum
was
payable
in
the
meantime,
[from
January
1,
1946
to
October
10,
1958]
nor
was
interest
accruing
on
any
principal
sum,
nor
were
the
appellants
being
kept
out
of
any
sum
to
which
they
were
entitled.
In
truth,
during
the
whole
of
the
intervening
period
they
had
no
right
to
compensation
for
their
loss,
and
there
was
neither
interest
accruing
to
them
nor
loss
of
revenue
being
sustained
in
respect
to
which
they
would
be
entitled
to
interest
by
way
of
damages
or
compensation.
.
.
.
No
case
of
which
I
am
aware
goes
so
far
as
to
hold
such
an
amount,
call
it
interest
or
damages
or
compensation
or
any
other
name,
to
be
interest
or
income
when
there
was
neither
interest
accruing
in
fact
on
the
“principal”
amount
during
the
material
period
nor
any
right
to
the
“principal”
amount
vested
in
the
taxpayer
during
that
period.
[Emphasis
added].
In
the
Perini
case
the
taxpayer
sold
all
his
shares
in
a
business,
the
price
consisted
of
an
initial
payment
plus
possible
further
payments
in
the
three
subsequent
years,
if
the
business
made
an
after-tax
profit
in
those
years.
If
such
payments
became
due
the
purchase
agreement
also
provided
that
the
purchaser
would
pay
seven
per
cent
interest
on
the
amounts
payable,
calculated
from
the
date
of
the
closing
of
the
sale
to
the
date
of
payment.
The
Minister
assessed
the
seven
per
cent
payments
as
interest
income.
The
taxpayer
argued,
on
the
basis
of
the
Huston
case
that
the
sums
were
not
interest
but
payments
of
a
capital
nature.
The
Federal
Court
of
Appeal
described
the
taxpayer's
argument,
at
76
(DTC
6082):
.
..
The
contention
is
that
while
they
are
called
interest,
are
calculated
like
interest,
and
serve
the
purpose
of
interest,
they
lack
an
essential
characteristic
of
interest
in
that
they
did
not
accrue
from
day
to
day
on
an
existing
principal
amount.
The
principal
amount
on
which
the
sum
referred
to
as
“interest”
was
based
did
not
come
into
existence
until
it
had
been
determined
by
an
audited
financial
statement
following
the
close
of
the
fiscal
year.
Until
then
there
was
no
principal
amount
on
which
interest
could
accrue.
[Emphasis
added].
The
Court
held
the
amounts
to
be
interest
stating,
at
78
(DTC
6084):
In
the
present
case
there
was
in
existence
on
the
closing
date
an
obligation
to
pay
a
price
to
be
determined
according
to
the
formula
set
out
in
paragraph
1.3
of
the
agreement,
but
the
precise
amounts
of
the
additional
payments,
if
any,
to
be
made
pursuant
to
clauses
(ii),
(iii)
and
(iv)
were
not
determined
as
of
that
date.
The
obligation
to
pay
additional
sums
on
account
of
the
purchase
price
under
these
provisions
was
a
conditional
one
or
a
contingent
liability.
It
depended
on
two
conditions
which
might
or
might
not
be
fulfilled.
There
had
to
be
post-tax
net
profits
determined
by
audited
financial
statements
and
the
seller
had
to
be
living.
Neither
was
a
certainty.
That
was
sufficient
to
make
the
liability
for
additional
payments
a
contingent
one
.
.
.
And
at
79
(DTC
6085):
.
.
.
Because
of
the
basis
on
which
the
balance
of
price,
if
any,
was
to
be
determined,
the
seller
was
obliged
to
wait
for
payment
of
the
balance.
Interest
was
the
appropriate
compensation
for
that
delay.
I
think
it
is
the
existence
on
the
closing
date
of
a
conditional
obligation
or
contingent
liability
to
pay
the
balance
of
price
which
the
parties
were
entitled
to
treat
as
having
become
absolute
with
retroactive
effect,
for
purposes
of
interest,
that
distinguishes
the
present
case
from
Huston.
[Emphasis
added].
The
defendant
extracts
from
these
decisions
the
principle
that
in
order
to
have
interest
one
must
have
at
least
a
contingent
right
to
a
principal
sum
in
existence
at
the
time
to
which
the
interest
relates.
A
contingent
right
to
a
principal
sum
does
not
exist,
it
is
argued,
unless
there
is
a
formula
in
existence
at
the
beginning
of
the
time
period
to
which
the
interest
relates
so
that
any
amount
which
might
ultimately
be
paid
as
principal
sum
is
ascertainable
although
obviously
not
capable
of
being
ascertained,
at
that
time.
Thus
in
the
present
case,
the
fact
that
the
plaintiff
had
a
right
to
have
her
1980
salary
ultimately
determined
does
not,
it
is
argued,
constitute
a
contingent
right
to
a
principal
sum.
Had
there
been
a
formula
in
existence
prior
to
the
start
of
negotiations
by
which
her
1980
salary
could
have
been
determined,
even
though
that
salary
might
ultimately
have
been
calculated
at
less
than
that
paid
in
1979,
the
defendant
would
have
no
trouble
in
agreeing
that
a
right
to
a
principal
sum
existed.
Alternatively,
if
I
understand
the
defendant's
argument
correctly,
had
an
interest
clause
been
agreed
upon
prior
to
the
start
of
the
1980
negotiations,
the
defendant
would
agree
that
the
payment
was
interest.
Had
a
formula
been
in
existence
at
the
beginning
of
the
period
so
that
interest
might
be
calculated
by
reference
to
it
should
any
principal
sum
ultimately
become
due,
then
the
defendant
concedes
that
the
payments
would
properly
be
characterized
as
interest.
If
I
understand
the
Defendant's
argument
correctly
this
would
be
so
even
though
in
this
case
the
principal
sum
would
not
be
ascertainable
at
the
beginning
of
the
period
for
which
it
was
due.
I
have
difficulty
finding
either
of
these
elements
to
be
requirements
of
the
concept
of
interest.
I
do
not
see
them
as
articulated
in
the
common
law
concept
of
that
term
nor
as
a
necessary
requirement
for
the
purposes
of
subsection
110.1(1)
of
the
Income
Tax
Act.
I
do
not
see
them
as
necessary
requirements
arising
out
of
the
decisions
in
the
Huston
and
Perini
cases.
The
plaintiff’s
right
to
have
her
salary
ultimately
decided
is
similar
to
the
taxpayer's
right
in
Perini
to
have
payments
made
if
after-tax
profits
are
earned.
In
either
case
no
additional
amounts
might
ever
be
paid.
The
only
difference
is
that
in
the
one
case
the
sum
is
ascertainable
in
accordance
with
a
formula
agreed
upon
prior
to
the
period
during
which
the
money
was
owing
but
not
paid;
in
the
other
it
was
the
subject
of
negotiation
during
almost
the
whole
period.
I
cannot
see
that
this
affects
the
character
of
the
ultimate
amount
awarded
as
interest.
In
both
cases
it
is
compensation
for
the
retention
of
money
owed
to
the
plaintiff;
it
is
paid
in
relation
to
a
principal
sum;
and
it
is
calculated
on
an
accrual
basis.
While
the
Federal
Court
of
Appeal
seems
to
distinguish
the
Perini
decision
from
that
in
Huston
on
the
ground
that
an
ascertainable
principal
sum
was
owed
at
the
commencement
of
the
period
to
which
the
interest
payment
related,
I
do
not
think
the
Court
meant
to
set
so
fine
a
distinction
down
as
an
absolute
requirement
for
interest.
The
gist
of
the
Huston
deci-
sion
was
Clearly
that
the
payments
in
question
there,
were
grants,
including
the
supposed
interest
component
thereof.
There
was
no
obligation
on
the
government
to
award
any
compensation
at
all
to
the
taxpayer
in
that
case.
In
both
the
Perini
case
and
the
present
case
a
principal
amount
was
owed
pursuant
to
a
commercial
relationship
between
the
parties.
In
both
cases
there
was
an
obligation
to
pay
the
taxpayer,
a
yet
to
be
determined
amount,
pursuant
to
that
contractual
relationship.
The
amounts
payable
do
not
have
the
character
of
a
grant.
In
the
present
case
the
principal
amount
owed
was
a
sum
owed
for
work
performed
during
a
defined
time
period.
Equally,
I
cannot
find
in
the
Perini
and
Huston
cases
a
requirement
that
in
order
to
constitute
an
interest
payment
the
formula
for
such
payment
must
be
decided
upon
prior
to
the
commencement
of
the
time
period
to
which
the
interest
relates.
It
is
open
to
the
parties
to
govern
their
relationship
by
retroactive
agreements:
Trollope
&
Colls
et
al
v
Atomic
Power
Constructions,
Ltd,
[1962]
3
All
ER
1035.
And
it
is
open
to
them,
when
they
do
so,
to
provide
for
interest
to
be
payable
on
the
outstanding
sum
left
due
over
the
relevant
period
of
time.
In
my
view
the
taxpayer's
situation
in
this
case
is
similar
to
that
of
the
taxpayer
in
Perini.
An
analogy
can
be
found
to
the
case
of
awards
of
pre-judgment
interest
given
with
respect
to
damage
claims
(especially
those
in
tort).
These
are
not
dissimilar
to
the
interest
award
made
by
the
arbitration
board
in
this
case.
There
is
an
unascertainable
amount
owing
to
the
plaintiff
from
the
date
that
the
tort
or
breach
of
contract
arises.
The
formula
for
determining
the
interest,
or
indeed
whether
there
will
be
any
at
all
awarded,
is
not
known
at
the
beginning
of
the
period
to
which
the
interest
relates.
This
is
a
matter
within
the
discretion
of
the
court.
Yet
there
is
no
doubt
that
such
payments
are
treated
by
Revenue
Canada
as
interest,
and
taxed
as
such:
Interpretation
Bulletin
IT-396R,
paragraph
12
(dated
May
29,
1984).
(Interpretation
Bulletins
are
of
course
not
authoritative,
but
merely
one
factor
for
consideration.)
In
my
view
the
$62.51
was
genuinely
a
payment
of
interest.
The
parties
agreed
that
their
relationship
would
be
governed
on
the
basis
of
the
retroactive
agreement.
This
involved
the
retention
of
moneys
owing
to
the
plaintiff
for
which
compensation
was
ultimately
paid.
The
compensation
paid
was
described
by
the
parties
and
the
arbitration
board
as
interest.
It
was
calculated
on
an
accrual
basis
by
reference
to
a
normal
rate
of
interest
then
current
or
with
respect
to
the
employer's
cost
of
borrowing.
I
can
see
no
reason
why
this
does
not
fall
within
the
meaning
of
the
word
“interest"
as
it
is
used
in
section
110.1
of
the
Income
Tax
Act.
Accordingly,
the
appeal
will
be
allowed.
Appeal
allowed.