You could be stashing away the exact same money as your friend, and end up with far less when you retire.
When just a few tweaks to how you run your KiwiSaver could give the average person $135,000 more when they retire.
Part of the problem is fees, which if you're not careful can take huge bites out of your money.
But the other issue is simply understanding what on earth your KiwiSaver provider is up to, and whether you're okay with that.
Luckily there's something you can do that only takes 10 minutes, and is getting even easier to do from this year.
For the latest Cooking the Books podcast I talked to the FMA's Gillian Boyes.
We discussed how KiwiSaver statements are becoming more transparent, what you should be looking out for in your statement, and how to fix it.
For the interview, watch the podcast video here:
Or you can listen to just the audio here:
If you have a question about this podcast, or question you'd like answered in the next one, come and talk to me about it. I'm on Facebook here, Instagram here and Twitter here.