Can an employer match go into a Roth 401(k) account?

No, Betterment does not currently support employer matching contributions going into a Roth 401(k) account. While recent legislation allows employers to deposit matching contributions into Roth accounts, Betterment's system does not yet support this feature.

All employer matches will be deposited into the Traditional 401(k) account, even if an employee contributes solely to a Roth 401(k). This means that while employee contributions can be designated as Roth, any employer matching contributions will remain pre-tax and subject to Traditional 401(k) tax treatment.