"TurboTax says get the info from my 5498."
No it doesn't. You have to enter the amount. Enter only the total of the year end balances in your own traditional IRAs (rollover, SEP and SIMPLE IRAs are all traditional IRAs). do not include the amounts in any Roth IRAs or in any inherited IRAs maintained for you as beneficiary.
The IRA custodian was required to provide the year-end values for all of your IRAs in January on your year-end statements, so that's where you'll obtain the values for accounts for which they were not required to send you a Form 5498.
