Apart from a traditional 401(k), financial planners also encourage young adults to explore other options that might suit them better, like a Roth 401(k), which doesn't offer a tax advantage up front, but is tax free when withdrawn in retirement.
"A Roth 401(k) account could make more sense [for younger people] because they are usually in a lower tax bracket than when they retire," said Lamar Watson, a certified financial planner based in Reston, Virginia.
3. Falling victim to lifestyle inflation
"Lifestyle inflation" or "lifestyle creep" happens when people begin to perceive former luxuries as necessities.
"Social media creates the desire to keep up with others," said Nick Reilly, a certified financial planner based in Seattle. "The fear of missing out, combined with an 'I earned it' mentality, has led to more Millennials spending most of their earnings on things that provide short-term fulfillment and status."
Young adults usually underestimate how much they can save on rent and food and how overspending can seriously derail other financial plans.
"Living in a walk-up apartment rather than a building with elevators probably won't feel that different when you are young, but it can save a lot of money," Watson said. He suggests keeping rent under 25% of your gross monthly income and food expenses under 15%.
4. Not having enough emergency savings
Emergency funds can save the day if you lose your job, become too ill to work, or have other unexpected bills to cover. However, younger people can sometimes be overconfident and ignore those risks.
"It is not surprising to see young adults with no emergency funds at all," Lee said, "which is concerning because it is an important financial buffer and can prevent you from getting further into debt." Lee said that any amount is a good place to start, but generally, single people need to set aside six months of expenses for an emergency. For dual-income couples, the amount should be at least three months.
5. Keeping too much in volatile assets like cryptocurrencies
While newer investments like NFTs, meme stocks, SPACs, and cryptocurrencies can provide attractive growth potential, overlooking their volatility can seriously risk your financial health.
"Thanks to social media, chances are high that everyone knows someone who got rich quickly off at least one of these opportunities," Reilly said.
Some financial planners also call this the "Shiny Object Syndrome." High-risk and high-volatility investments are increasingly appealing to younger investors looking to build quick wealth, and can make long-term, more established methods of wealth building, like stocks, seem boring.
"But it is extremely dangerous to put all your money into high-risk assets like NFTs or cryptocurrencies," Watson said, "When it comes to financial planning, it's more about preparing for the worst than chasing the highest return."