Yes, you can technically have multiple Solo 401k plans, but it's generally not recommended for the same self-employed business due to IRS rules; however, it's common and allowed to have a Solo 401k for self-employment income and a regular 401k from a W-2 job, with total employee contributions across both capped by IRS limits, and you can have multiple accounts (like bank, brokerage) under one single plan. You can only have separate Solo 401k plans for truly distinct, unrelated businesses not under common control, but usually, it's better to combine income into one plan for simplicity and to avoid audit risks.
Participating in a 401k plan at even half of those employers would yield four different retirement accounts by the age of 35. Is it legal to have more than one 401k? Yes.
If you have a full-time job and a side business with no employees, you can contribute to both a regular 401(k) and a Solo 401(k). Employee contributions are capped at $23,500 total across all 401(k) plans in 2025 ($31,000 if 50+).
For a 50-year-old, the average 401(k) balance varies significantly by provider but generally falls between around $190,000 to over $600,000, with medians often in the $70,000 to $250,000 range, showing huge disparities between average and median figures due to high earners skewing the average; experts suggest aiming for 5 to 6 times your salary by this age.
Yes, you technically can have multiple Solo 401(k) plans, but certain rules and conditions apply.
Solo 401(k) disadvantages include administrative complexity (especially with Form 5500 filing over $250k balance), eligibility restrictions (no employees besides spouse), higher potential fees than IRAs, strict early withdrawal rules (penalties/taxes), and potential lost growth if taking loans, all making it less simple than a SEP IRA for some.
The "240,000 rule" (or $1,000-a-month rule) is a retirement guideline suggesting you need $240,000 saved for every $1,000 of monthly income you want in retirement, based on a 5% annual withdrawal rate ($240,000 x 0.05 = $12,000/year or $1,000/month). It's a simple way to estimate savings needs, but it doesn't account for inflation, taxes, market volatility, or other income sources like Social Security, making it a starting point, not a complete plan.
Combining accounts can help you maintain a good balance
When you have multiple accounts, there's a tendency to look at each one individually. That can leave you with a skewed picture of your overall mix of stocks, bonds, and cash (a money market fund, for example).
Financial pundit Dave Ramsey's advice to pause 401(k) contributions while paying off debt forfeits employer match dollars and halts compounding growth. Staying invested through market downturns is a way to avoid missing the reward of the market rebounding.
Summary. If you plan on spending $60,000 or less annually in retirement, $800,000 will be more than enough. You can retire early, at age 50, with $800,000 if you budget and plan correctly.
To get $1,000 a month from your 401(k), you generally need $240,000 to $300,000 saved, depending on your withdrawal rate, with the common "$1,000 rule" suggesting $240,000 at a 5% withdrawal rate, though this doesn't account for inflation or other income like Social Security. A more conservative 4% withdrawal rate would require closer to $300,000 for the same $1,000 monthly income.
A self-employed 401(k) plan may be appropriate for sole-proprietors and other small businesses who have no eligible employees other than owners and spouses of the owners.
If a participant contributes to the after-tax money type in the 401(k), they will then want to convert that money to the Roth bucket. By doing this, they have backdoored their way into Roth IRA. It's called the Mega Backdoor Roth because unlike IRAs, the contribution limit to the after-tax 401(k) is $70,000.
By incorporating the EACA features into your Solo 401k plan documents, you can receive a $1,500 tax credit ($500 annually for three years), starting with your 2024 tax return (eligible in 2025 and 2026, if that's when you set up your plan).
The short answer: to retire on $80,000 a year in Australia, you'll need a super balance of roughly between $700,000 and $1.4 million. It's a broad range, and that's because everyone's circumstances are different.
Ten simple ways to grow your super