Where can I find a Third Party Administrator for a self-directed solo 401K?
You setup a self-directed solo 401k by paying a one time fee for a company to setup a trust, name you the sole trustee, and file it with the IRS. None of these companies offer TPA because it opens them up to profit leaching liability. After you have your trust setup, you can open a brokerage account or several with any of the big names you want (Vanguard, Fidelity, Ameritrade, etc), or just use the money to flip houses, do P2P lending, whatever, the world is your investment oyster. If the company has recurring fees you need to ask what is going on because if they aren't offering TPA services, then what the heck could they be charging you for? I did see one company, I think it was IRA Financial Group, that had the option of having a CPA do TPA for you for a recurring fee, but I would pass on that. The IRS administration requirements are typically just the 5500-EZ that you have to file as a hard copy by July 31 if your investments are worth more than $250k, on December 31. Yes, you have to get the actual form from the IRS, write on it with a pen and mail it to them every year, barbaric. You can either have your accountant do it or do it yourself. If you're below $250k just google solo 401k rule change two or three times a year and don't try to launder money. If anything, the rules will loosen with time, I don't imagine the Republican Congress cracking down on small business owners any time soon. Fidelity Investments offers Solo 401(k) plans without any management fees. The plan administrator is typically the employer itself (so, your business, or you as the principal manager). You (as the individual employee) are the participant.
You can borrow against a 401k for 5 years. This defers any penalty fees that the IRS mandates. Put the cash back in your 401k within those 5 years. you can also solo administer 401k plans even if you have an unincorporated business, so you can start one of those if you have any other form of cashflow, and there may be a way to get the other plan rolled into your solo one.  http://www.irs.gov/publications/p560/ch04.html#en_US_publink10009053 The investments offered in 401K are usually limited to a selection of mutual funds offered by a 401K provider.  The 401K providers and the mutual funds charge fees.  The mutual fund industry has a lobbying group that will push for increased 401K contributions to direct money into their mutual funds to collect fees.  The top 401 K provider in 2005 was fidelity.  It managed $337 billion in 401Ks of which $334 billion was directed into mutual funds. Although I would have to use some of the same providers to open an IRA, I would not have to invest in the providers' mutual funds when I open an IRA.  I can buy a stock and hold onto it for 10, 20, 50 years inside of my IRA.  Thus, the only fee the investment company would collect from me would be from when I purchased the stock and when I sold the stock.  Not nearly as profitable as mutual fund fees. If you have self-employment income you can open a Solo 401k.  Your question is unclear as to what your employment status is.  If you are self-employed as an independent contractor, you can open a Solo 401k.  You can still do this even if you also earn non-self-employment income (i.e., you are an employee and receive a W-2).  However, the limits for contributions to a Solo 401k are based on your self-mployment income, not your total income, so if you have only a small amount of self-employment income, you won't be able to contribute much to the Solo 401k.  You may be able to reduce your taxes somewhat, but it's not like you can earn $1000 of self-employment income, open a Solo 401k, and dump $5000 into it; the limits don't work that way. Your assumptions are flawed or miss crucial details. An employer sponsored 401k typically limits the choices of investments, whereas an IRA typically gives you self directed investment choices at a brokerage house or through a bank account. You are correct in noticing that you are limited in making your own pre-tax contributions to a traditional IRA in many circumstances when you also have an employer sponsored 401k, but you miss the massive benefit you have: You can rollover unlimited amounts from a traditional 401k to a traditional IRA. This is a benefit that far exceeds the capabilities of someone without a traditional 401k who is subject to the IRA contribution limits. Your rollover capabilities completely gets around any statutory contribution limit. You can contribution, at time of writing, $18,000 annually to a 401k from salary deferrals and an additional $35,000 from employer contributions for a maximum of $53,000 annually and roll that same $53,000 into an IRA if you so desired. That is a factor. This should be counterweighed with the borrowing capabilities of a 401k, which vastly exceeds an IRA again. The main rebuttal to your assumptions is that you are not necessarily paying taxes to fund an IRA. Okay thanks, let's hope it's a relatively painless process to correct my mistake!   Really odd that my 401(k)s are traditional, I was so sure they weren't.  Maybe it's better then to open up a traditional IRA alongside the Roth, use that for rollovers, and just kick a few bucks into the Roth on occasion? "There are a lot of unintended consequences of fairly arbitrary IRS guidelines when it comes to 401Ks, they both close and create tons of loopholes and many companies are left to implement their own policy around these laws. Ultimately what you are left with are a lot of random things, interpreted differently by every single company in the country, that aren't directly codified by the IRS or Congress. If you have a choice regarding what brokerage firm manages your 401(k), then just call around. Be sure to ask the pencil pusher on the phone to double check because they might say ""OF COURSE you can get paperless statements it is 2015"" but then when you sign up it becomes ""ooohhh sorry due to recent guidelines this kind of account isn't eligible for paperless statements""" But I'm not choosing to forgo negotiating on my own. Someone else with ties to the listings is giving special access to my negotiations. Given access I can't get.  I'd rather negotiate on my own, usually adding someone in the middle of a conversation between 2 individuals is bad for everyone.  I'm not being given the option to negotiate on my own, I either take the artificially inflated rate or skip investing all together because I can't get the access that HFT's have, nor can I negotiate around them. If you don't know how to evaluate funds and are looking for someone to help you make good investment decisions, then you want a financial advisor.  My suggestion is to look for one that 1) doesn't try to sell you insurance first (since insurance is an expense, not an investment), 2) can explain to you the the relationship between risk and return (and what mix is right for you) and 3) recommends funds that have good demonstrated returns after fees have been removed. If you plan to pick your own funds and just want a transaction broker, go with one of the free/cheap online discount brokers.  Many let you invest in hundreds of different funds, so look for brokers with the cheapest fees.