The good news is, yes you can join KiwiSaver. You’ll just need to set yourself up with an individual account as well, as KiwiSaver is only available for individuals. Sign up to Kernel here.
You won't be able to hold KiwiSaver under the same login as a trust or company.
Please note: You will need to use two different and unique email addresses for the individual and trust accounts. If you need assistance with this, please email our team at support@kernelwealth.co.nz.