How much total salary to allocate to defer $17,500 to 401(k)?
You're on the right track, and yes, that small difference is subject to income taxes. Do you use a payroll service? I do the same thing and use my payroll software to tweak the salary until the paycheck is just a few dollars every month (we run payroll once a month), with the rest going to the 401(k) and payroll taxes. So we're rounding up just a bit just so there's an actual paycheck with a positive number, and a bit does get withheld for fed/state income tax.  Also keep in mind you can make a company match. If your plan is a solo 401(k) with just you and your wife as the sole employees, consider the 25% match for both of you. The match is not subject to payroll taxes because it is a company expense. IRS web page: http://www.irs.gov/Retirement-Plans/One-Participant-401(k)-Plans
"Yes, it can be done.  See ""Scenario 4"" at Isolating 401(k) basis - Fairmark.com.  Though that article is primarily about getting after-tax 401(k) money into a Roth IRA, Scenario 4 applies to the scenario you are asking about. At a high level you do exactly what you say -- transfer the pre-tax money from your trad IRAs to a 401(k) (btw, a solo 401(k) will work for this also -- doesn't have to be your employer's -- but then you need to be eligible to set up a solo 401(k)).  This is allowed because qualified plans can't accept after after-tax traditional IRA money, so the transfer overrides the usual pro rata rules and ""strains"" the basis out and leaves it in the trad IRA.   However, there's a mismatch between the intent of Congress (as indicated by the Joint Committee on Taxation report on the law) and the actual text of the law as detailed in the Fairmark article which while it doesn't stop you from doing this adds a couple of hoops to jump through if you want to be in total compliance with the law." "If you are the sole owner (or just you and your spouse) and expect to be that way for a few years, consider the benefits of an individual 401(k). The contribution limits are higher than an IRA, and there are usually no fees involved. You can google ""Individual 401k"" and any of the major investment firms (Fidelity, Schwab, etc) will set one up free of charge. This option gives you a lot of freedom to decide how much money to put away without any plan management fees. The IRS site has all the details in an article titled One-Participant 401(k) Plans. Once you have employees, if you want to set up a retirement plan for them, you'll need to switch to a traditional, employer-sponsored 401k, which will involve some fees on your part. I seem to recall $2k/yr in fees when I had a sponsored 401(k) for my company, and I'm sure this varies widely.  If you have employees and don't feel a need to have a company-wide retirement plan, you can set up your own personal IRA and simply not offer a company plan to your employees. The IRA contribution limits are lower than an individual 401(k), but setting it up is easy and fee-free. So basically, if you want to spend $0 on plan management fees, get an individual 401(k) if you are self-employed, or an IRA for yourself if you have employees." The best option for maximizing your money long-term is to contribute to the 401(k) offered by your employer. If you park your inheritance in a savings account you can draw on it to augment your income while you max out your contributions to the 401(k). You will get whatever the employer matches right off the bat and your gains are tax deferred. In essence you will be putting your inheritance into the 401(k) and forcing your employer to match at whatever rate they do. So if your employer matches at 50 cents on the dollar you will turn your 50 thousand into 75 thousand. First, read my answer here: Oversimplify it for me: the correct order of investing For me, the answer to your question comes down to how badly you want to get rid of your student loan debt. I recommend that you get rid of it as fast as possible, and that you sacrifice a little in your budget temporarily to make that happen. If that is what you want, here is what I would do. Following the steps in my other answer, I would pay off the student loans first. Cash out your non-retirement growth fund to jump start that, then challenge yourself to take as much of your paycheck as you can and throw it at the debt. Figure out how many months it will take before the debt is gone.  Once the debt is gone, you won't have those monthly payments anymore and you won't be continually losing money in interest to the bank. At that point, you can build up your cash savings, invest in your employer's 401(k) plan for retirement, and start saving toward other long-term saving goals (car, house, etc.) To address some of your other concerns: If you cash out the non-retirement fund, you'll probably owe some capital gains tax. (Although, on a $3k investment, the long term rate won't add up to very much, depending on your tax bracket and cost basis.) You can't use the money from your non-retirement fund to invest in your 401(k).  You can only contribute to your 401(k) via payroll deduction.  To explicitly answer your question, your non-retirement fund is not bound by the limitations of retirement funds, meaning that you can cash it out and use it however you like without penalty, only paying perhaps a few hundred dollars of capital gains tax at tax time next year. Think of it as another source of cash for you. I can only address this part of it: For instance with a 10k net income, 9293 is the limit for 401k from employee. How is this calculated? I believe this limit is total for all sources too, which I'm confused about. How it's calculated is that when you are self-employed you also pay the employer portion of the FICA taxes.  This comes off above the line and is not considered income.  The 401k contribution limit takes this into account. The new payment on $172,500 3.5% 15yr would be $1233/mo compared to $1614/mo now (26 bi-weekly payments, but 12 months.) Assuming the difference is nearly all interest, the savings is closer to $285/mo than 381.  Note, actual savings are different, the actual savings is based on the difference in interest over the year. Since the term will be changing, I'm looking at cash flow, which is the larger concern, in my opinion.    $17,000/285 is 60 months. This is your break even time to payoff the $17000, higher actually since the $17K will be accruing interest.  I didn't see any mention of closing costs or other expenses. Obviously, that has to be factored in as well.  I think the trade off isn't worth it. As the other answers suggest, the rental is too close to break-even now. The cost of repairs on two houses is an issue. In my opinion, it's less about the expenses being huge than being random. You don't get billed $35/mo to paint the house. You wake up, see too many spots showing wear, and get a $3000 bill. Same for all high cost items, Roof, HVAC, etc.  You are permitted to borrow 50% of your 401(k) balance, so you have $64K in the account. I don't know your age, this might be great or a bit low. I'd keep saving, not putting any extra toward either mortgage until I had an emergency fund that was more than sufficient. The fund needs to handle the unexpected expenses as well as the months of unemployment. In general, 6-9 months of these expenses is recommended.  To be clear, there are times a 401(k) loan can make sense. I just don't see that it does now.  (Disclaimer - when analyzing refis there are two approaches. The first is to look at interest saved. After all, interest is the expense, principal payments go right to your balance sheet. The second is purely cash flow, in which case one might justify a higher rate, and going from 15 to 30 years, but freeing up cash that can be better deployed. Even though the rate goes up say 1/2%, the payment drops due to the term. Take that savings and deposit to a matched 401(k) and the numbers may work out very well.  I offer this to explain why the math above may not be consistent with other answers of mine.) "There is a very simple calculation that will answer the question: Is the expected ROI of the 401K including the match greater than the interest rate of your credit card? Some assumptions that don't affect the calculation, but do help illustrate the points. You have 30 years until you can pull out the 401K. Your credit card interest rate is 20% compounded annually.  The minimum payoffs are being disregarded, because that would legally just force a certain percentage to credit card. You only have $1000.  You can either pay off your credit card or invest, but not both.  For most people, this isn't the case.  Ideally, you would simply forego $1000 worth of spending, AND DO BOTH  Worked Example: Pay $1000 in Credit Card Debt, at 20% interest.   After 1 year, if you pay off that debt, you no longer owe $1200.  ROI = 20% (Duh!) After 30 years, you no longer owe (and this is pretty amazing) $237,376.31.  ROI = 23,638% In all cases, the ROI is GUARANTEED. Invest $1000 in matching 401k, with expected ROI of 5%. 2a. For illustration purposes, let's assume no match After 1 year, you have $1050 ($1000 principal, $0 match, 5% interest) - but you can't take it out. ROI = 5% After 30 years, you have $4321.94, ROI of 332% - assuming away all risk. 2b. Then, we'll assume a 50% match. After 1 year, you have $1575 ($1000 principle, $500 match, 5% interest) - but you can't take it out. ROI = 57% - but you are  stuck for a bit After 30 years, you have $6482.91, ROI of 548% - assuming away all risk. 2c. Finally, a full match After 1 year, you have $2100 ($1000 principle, $1000 match, 5% interest) - but you can't take it out. ROI = 110% - but again, you are stuck. After 30 years, you have $8643.89, ROI of 764% - assuming away all risk. Here's the summary - The interest rate is really all that matters.  Paying off a credit card is a guaranteed investment.   The only reason not to pay off a 20% credit card interest rate is if, after taxes, time, etc..., you could earn more than 20% somewhere else.   Note that at 1 year, the matching funds of a 401k, in all cases where the match exceeded 20%, beat the credit card. If you could take that money before you could have paid off the credit card, it would have been a good deal. The problem with the 401k is that you can't realize that gain until you retire. Credit Card debt, on the other hand, keeps growing until you pay it off. As such, paying off your credit card debt - assuming its interest rate is greater than the stock market (which trust me, it almost always is) - is the better deal. Indeed, with the exception of tax advantaged mortgages, there is almost no debt that has an interest rate than is ""better"" than the market." To expand on mhoran's answer - Once you mention the 401(k), we're compelled to ask (a) what is the match, if any, and (b) what are the expenses within the funds offered.  Depositing to get the full match is going to get you the biggest return on your money. It's common to get a dollar for dollar match on the first 5 or 6% of your income. If the fees are high, you stop at the match, and move to an IRA for the next money you wish to save.  At 22, I'd probably focus on the Roth. If you have access to a Roth 401(k), that's great, the match will be pre tax dollars and you'll get started with a decent tax status mix.  These accounts can form the core of your investing. Most people have little left over once their retirement accounts are fully funded. And yes, reading to understand stocks is great, but also to understand why stock indexing is the best choice for most investors.