Interest Payment – WBCHB (for payment on 22 August 2018

Notification of interest payment & interest rate change
Notification of interest payment & interest rate change
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Announcement Summary
Entity name
WESTPAC BANKING CORPORATION
Security on which the Interest Payment will be paid
WBCHB - SUB TR BND 3-BBSW+2.30% 22-08-23 SUB RED TR T-8-18
Announcement Type
New announcement
Date of this announcement
Thursday May 24, 2018
Interest Payment Amount
AUD 1.0700
Ex Date
Monday August 13, 2018
Record Date
Tuesday August 14, 2018
Payment Date
Wednesday August 22, 2018
Additional Information
The Interest Rate was determined using the following formula:
Bank Bill Rate + Margin
as follows:
Bank Bill Rate is the 90 day Bank Bill Rate on 22 May 2018: 1.9453%
+ Margin: 2.3000%
= Interest Rate: 4.2453% pa
The Interest on each Westpac Subordinated Note II (WSN II) was calculated as follows:
Interest Rate: 4.2453% pa
x Face Value: AUD 100
x days in Interest Period: 92
/ 365
= Interest: AUD 1.0700, unfranked
Refer to below for full details of the announcement
Announcement Details
Part 1 - Entity and announcement details
1.1 Name of +Entity
WESTPAC BANKING CORPORATION
Notification of interest payment & interest rate change

Notification of interest payment & interest rate change
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1.2 Registered Number Type
ABN
Registration Number
33007457141
1.3 ASX issuer code
WBC
1.4 The announcement is
New announcement
1.5 Date of this announcement
Thursday May 24, 2018
1.6 ASX +Security Code for Interest Payment
WBCHB
ASX +Security Description
SUB TR BND 3-BBSW+2.30% 22-08-23 SUB RED TR T-8-18
Part 2A - Interest period dates and interest payment details
Interest Rate Calendar Type
Rule 7(2), 7 calendar day
2A.1 Payment date
Wednesday August 22, 2018
2A.2 +Record Date
Tuesday August 14, 2018
2A.3 Ex-Date
Monday August 13, 2018
2A.4 First day of payment period
Tuesday May 22, 2018
2A.5 Last day of payment period
Tuesday August 21, 2018
2A.6 Number of days in the payment period
92
2A.7 Interest rate expressed as a per annum rate
4.245300 %
2A.8 Interest rate pro-rated for the number of
days in the payment period
1.070000 %
2A.9 Currency in which the interest payment is
made ("primary currency")
AUD - Australian Dollar
2A.10 Interest payment amount per +security
AUD 1.07000000
2A.10(i) Comment on how the interest payment amount per security is calculated
Refer to 4.3

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2A.11 Are any of the below approvals required for the interest payment before business day 0 of
the timetable?
Security holder approval
Court approval
Lodgement of court order with +ASIC
ACCC approval
FIRB approval
Another approval/condition external to the entity required before business day 0 of the
timetable for the interest payment.
No
2A.12 Is the interest payment franked?
No
2A.13 Is the interest payment payable in the form of +securities rather than cash?
No
2A.14 Does the entity have arrangements relating to currency in which the interest payment is
paid to security holders that it wishes to disclose to the market?
No
2A.15 Is there a principal amount payment component payable?
No
Part 3 - Floating rate +securities - details of interest rate applicable to the payment notified in
Part 2A
3.1 Date interest rate is set
Tuesday May 22, 2018
3.2 Comments on how the date that interest rate is set is determined
First Business Day of the Interest Period
3.3 Interest base rate
1.9453 %
3.4 Comments on how interest base rate is set
90 day Bank Bill Rate on the first Business Day of the Interest Period. For more information, refer to the WSN II
Prospectus.
3.5 Interest margin
2.3000 %
3.6 Comments on how interest margin is set
Margin set at the time of issue of WSN II and will not change. For more information, refer to the WSN II Prospectus.
3.7 Any other rate/multiplier used in calculating interest rate
0.0000 %

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3.8 Comments on how other rate used in calculating interest rate is set
3.9 Total interest rate expressed as a per annum rate
4.2453 %
3.10 Comment on how the total interest rate expressed as a per annum rate is set
Interest Rate = Bank Bill Rate + Margin
Part 4 - Further information
4.1 Please provide any further information applicable to this payment
Capitalised terms in this announcement have the meanings given in the WSN II Prospectus.
4.2 URL link to a copy of the prospectus/PDS or further information about the +security
http://www.westpac.com.au/westpacsubnotesii
4.3 Additional information for inclusion in the Announcement Summary
The Interest Rate was determined using the following formula:
Bank Bill Rate + Margin
as follows:
Bank Bill Rate is the 90 day Bank Bill Rate on 22 May 2018: 1.9453%
+ Margin: 2.3000%
= Interest Rate: 4.2453% pa
The Interest on each Westpac Subordinated Note II (WSN II) was calculated as follows:
Interest Rate: 4.2453% pa
x Face Value: AUD 100
x days in Interest Period: 92
/ 365
= Interest: AUD 1.0700, unfranked