There are two main types of Roth IRAs: traditional Roth IRAs and conversion Roth IRAs.
Traditional Roth IRAs: Traditional Roth IRAs are opened with after-tax dollars. Your contributions grow tax-free and you can withdraw them tax-free in retirement.
Conversion Roth IRAs: Conversion Roth IRAs are traditional IRAs that have been converted to Roth IRAs. Your contributions and investment earnings grow tax-free in a conversion Roth IRA, but you will have to pay taxes on any earnings that were in the traditional IRA before the conversion.