Sort of. The employee + employer match can go into regular 401k or roth 401k whereas the mega backdoor roth is only roth. Thus you can put ~33,000-66,000 into

Sort of. The employee + employer match can go into regular 401k or roth 401k whereas the mega backdoor roth is only roth. Thus you can put ~33,000-66,000 into roth ones and only 0-33,000 into pre-tax ones whereas if the employer match got you up to the full 66,000, you could fully customize it to pre or post tax however you like.