Amending tax return for excess Roth IRA 2019
Hi,
I made excess contribution into Roth IRA in 2019, and withdrew all pertaining contributions and capital gains in 2020 after I fount it out, I paid 6% penalty in 2019 tax return, however, I didn't pay regular income tax and extra 10% early withdraw tax for the capital gain because my broker said they can only send 1099R form for 2020 in 2021, now I got the form 1099R of 2020, how can I make amended tax return for 2019? In 2019 turbo tax software (premier), I couldn't enter 1099R form information since current form title is 2020, so which part of income section (amended 2019 tax return) I should use to enter capital gain in my current form 1099R 2020? will it calculate extra 10% income tax automatically?
Thanks,