During 2018 I converted my regular IRA to Roth IRA and I
already filed my 2018 personal tax return using 1099-R I received. My return
are accepted and I already received refund from both federal and state on
5/15/2019. However, I just received form 5498 from my brokerage and found I put
wrong numbers of Fair market value of all investment in my account at year end "box 5 in f5498". When I entered the right amount in TurboTax, I am entitled
more refund. My question is how long should I wait before I can file amendment
1040X. Is there any earliest day I can file?
