Can you roll roth into 401k?

Yes, you can roll a Roth IRA into a 401(k) if your 401(k) plan allows for it, but this option is not commonly available. When rolling over, the funds from the Roth IRA will generally be treated as after-tax contributions in the 401(k). It's important to check with your 401(k) plan administrator for specific rules and procedures, as well as potential tax implications.