Magician holding wand over a hat, with a calculator displaying '$1,000,000' surrounded by sparkles and coins falling

A few years ago, Nathaniel Hudson-Hartman, 38, calculated that he'd need about $1.5 million in savings to retire comfortably in his sixties.

"I was making roughly $50,000 a year between my W-2 job and gig work, and I hope to enjoy retirement for about 30 years," he said.

As of March, the Portland-based gig driver had roughly $100,000 in his 401(k) from a previous job and about $12,000 across other savings and investment accounts.