A PPF account runs for 15 years. You can extend it in blocks of five years after maturity, but early exit is limited.

Editor's Note: APYs listed in this article are up-to-date as of the time of publication. They may fluctuate (up or down) as the Fed rate changes. CNBC Select will update as changes are made public.

Cassidy Horton is a finance writer covering banking, life insurance and business loans. She has worked with top finance brands including NerdWallet, MarketWatch and Consumer Affairs. Cassidy first ...

Christy Bieber has a JD from UCLA School of Law and began her career as a college instructor and textbook author. She has been writing full time for over a decade with a focus on making financial and ...

Online-only banks have grown in popularity in recent years thanks to certain benefits that brick-and-mortar banks can't match. With less overhead costs from not having to operate physical branches, ...