The perks of self-employment are plenty, but there's at least one significant drawback: the lack of an employer-sponsored retirement plan like a 401(k).
Enter the solo 401(k), or what the IRS calls a one-participant 401(k). Designed for self-employed workers, this account mimics many of the features of an employer-sponsored plan, without the drag of working for the man.
What is a solo 401(k)?
Pretty much exactly what it sounds like: an individual 401(k) designed for a business owner with no employees.
In fact, IRS rules say you can't contribute to a solo 401(k) if you have employees, though you can use the plan to cover both you and your spouse.
Solo 401(k) contribution limits
The total solo 401(k) contribution limit is up to $54,000 in 2017. There is a catch-up contribution of an extra $6,000 for those 50 or older.
To understand solo 401(k) contribution rules, you want to think of yourself as two people: an employer (of yourself) and an employee (yes, also of yourself).
Within that overall $54,000 contribution limit, your contributions are subject to additional limits in each role:
As the employee, you can contribute up to $18,000 in 2017, or 100 percent of compensation, whichever is less. Those 50 or older get to contribute an additional $6,000 here.