Does any chain allow a Mega Backdoor Roth?

Get help with your application

Use all the free resources available to you from SDN: articles, guides, expert advising, forums discussions, and school research.

Walgreens: no.

They do actually have a Voluntary Investment Plan where you can make after-tax contributions, but most pharmacists are on the cusp of being ineligible if you are a Highly Compensated Employee with a base salary over $120k. Furthermore, I don't think you can make an in-service rollover to a Roth IRA.