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Microsoft Excel formula for calculating stamp duty in Australian Capital Territory (ACT, commonly referred to as "Canberra"), Australia.
=
IF(A1 >= 1455000, 0 + 0.0509 * A1,
IF(A1 >= 1000001, 42210 + 0.07 * (A1 - 1000001),
IF(A1 >= 750001, 25960 + 0.065 * (A1 - 750001),
IF(A1 >= 500001, 13460 + 0.05 * (A1 - 500001),
IF(A1 >= 300001, 5460 + 0.04 * (A1 - 300001),
IF(A1 >= 200001, 2960 + 0.025 * (A1 - 200001),
MAX(0.0148*A1,20)
))))))
@quiettype
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New formula updated 11/10/2017: c/o https://www.revenue.act.gov.au/land-duties/land-duties?result_1060955_result_page=4

=
IF(A1 >= 1455000, 0 + 0.0491 * A1,
IF(A1 >= 1000001, 40500 + 0.068 * (A1 - 1000001),
IF(A1 >= 750001, 24750 + 0.063 * (A1 - 750001),
IF(A1 >= 500001, 12800 + 0.0478 * (A1 - 500001),
IF(A1 >= 300001, 5200 + 0.038 * (A1 - 300001),
IF(A1 >= 200001, 2800 + 0.024 * (A1 - 200001),
MAX(0.014*A1,20)
))))))

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