Contact Mercer NZ for all your KiwiSaver and FlexiSaver inquiries
Contact Mercer New Zealand for all of your KiwiSaver and FlexiSaver queries


Contact us

You can update your details, change your investment strategy or check your balance online here.

Or you can manage your account from your mobile device anytime by downloading the Mercer NZ app:


If you haven't logged in before, you can register here.

If you need further assistance logging in to your account, please visit our login process FAQs page here.

Alternatively, you can talk to Elo the Chatbot or send us an email via and we will get back to you as soon as we can.

Toll free: 0508 MERCER 


From overseas: +61 3 8306 0971

9.00am - 7.00pm

Monday - Friday (NZST/NZDT)


Free support from our financial advice team


To make a complaint you can email us on, or write to us to the address at the bottom of this page.

Visit Mercer New Zealand offices


20 Customhouse Quay, Wellington, New Zealand 6140

0508 637 237 

Visit Mercer Wellington office


PWC Tower, 15 Custom Street West, Auckland, New Zealand 1010 

0508 637 237 

Visit Mercer Wellington office

Toll free: 0508 MERCER (0508 637 237)
From overseas: +61 3 8687 1886
9.00am - 7.00pm

Monday - Friday (NZST/NZDT)

Write to us:

Mercer NZ, PO Box 1849
Wellington, New Zealand 6140

Commercial Bay

PWC Tower, 15 Customs Street West,
Auckland, New Zealand 1010
0508 637 237

Get directions