We reviewed and compared more than a dozen IRA accounts to determine the top brokerages and robo-advisors with strong retirement account options. Some of the factors we considered included minimum account balances, account fees, account types, investment selection, and retirement planning resources. We also cross-referenced our list with popular comparison sites like NerdWallet and Investopedia to make sure we didn't miss anything.  We also looked into each account's customer service offerings, mobile app access, and human advisor offerings.