I'm an American citizen and have recently received NZ residency. I'm wondering if it's worth opening a KiwiSaver account, or if it'll become too much of a burden for filing taxes in the US. At this point I have a low-middle class income and wouldn't put away heaps of money in the account. I have simple finances so am able to file my US taxes and FBAR without paying an accountant. I also have a Roth IRA that I can use to save money for retirement. At this point, I don't know where I will retire, but I expect it's more likely to be the US than NZ.

Any advice is appreciated.

Cheers!