ACTIn ForceAct
Taxation Administration Act 1999
26Interest rate
Start here
Get a plain-English read of 26
Turn the raw legal text into a practical explanation grounded in Taxation Administration Act 1999.
26 Interest rate
(1) The interest rate is the sum of—
(a) the market rate component; and
(b) the premium component.
(2) The market rate component for a day is—
(a) if a determination of a rate is, under section 139 (1) (b)
(Determination of amounts payable under tax laws), in force for
this paragraph for the day—the determined rate; or
(b) if paragraph (a) does not apply—the monthly 90-day bank bill
rate worked out in accordance with table 26 and rounded to the
2nd decimal place (with 0.005 rounded to 0.01).
Table 26
If the day is…. the monthly 90-day bank bill rate is….
in the 1st 6 months of a year (a) if, before 1 January of the year,
the monthly 90-day bank bill
rate for the previous
November had been
published—that rate; or
(b) if paragraph (a) does not
apply—the last monthly
90-day bank bill rate published
before 1 January of the year.
in the 2nd 6 months of a year (a) if, before 1 July of the year, the
monthly 90-day bank bill rate
for the previous May had been
published—that rate; or
(b) if paragraph (a) does not
apply—the last monthly
90-day bank bill rate published
before 1 July of the year.
(3) The premium component is 8% per annum.
monthly 90-day bank bill rate means the monthly average yield of
90-day bank accepted bills published by the Reserve Bank of
Australia for a particular month.
Interest Division 5.1