[quote author="CTNative" date=1215511472]Borrowing against the 401K is an option, but I always thought it was not a good one. I've read so much advice against ever touching your 401k for any reason that I've just shelved the concept since nobody ever seems to advocate it. If anyone considers it viable, I'd be more than interested in their ideas about it.</blockquote>
Take a look at this spreadsheet. The pros of taking a loan against your 401(k) are that you pay back the interest to yourself, the interest rate is lower, and the length of the loan is shorter. The cons are the risk of having to payback the loan when you leave employment, the interest not being tax-deductible, and monthly payment being higher.
I can't say one is better than the other. Personally, it doesn't seem like a big enough difference to take additional risk and take a loan against my 401(k).
More details on the spreadsheet. Option A: I modeled a $10,000 loan at 8.75% for 30 years with a 30% tax rate. I am showing the monthly payment (interest & principal). I also show how your 401(k) would grow (the $10,000 you leave in there since you take a conventional loan). The last column "401(k) (invest back in 401(k))" also show what happens to your 401(k) if you invest the difference in payment between the two options in your 401(k). Since payment are lower under option A, you can put a little more money in your 401(k) for the first 15 years.
Option B: I modeled a $10,000 401(k) loan at 5.75% for 15 years. You pay the interest back to your account, but it is not tax-deductible. Your 401(k) starts at $0 (since you took the $10,000 out), but grows each month as you put money back in it. The last column shows what happens to your 401(k) if you invest the difference in payment between the two options in your 401(k). The addtional payments only start once the 401(k) loan is paid back. Therefore after 15 years, you can invest in your 401(k) what you would be paying if you took a conventional loan.
Hopefully, I didn't confuse anyone too much! You can play with the input in blue to see what happens under different scenarios.
I have a nice spreadsheet that models the Rent vs Own over 30 years. I also have another spreadsheet that shows the LTV, payments, and salary increases over 30 years. I still have to review those before I post them.
Note: I am not a financial advisor and this spreadsheet as not been peer reviewed, however, I hope it is error free and can help someone understand the cash flow differences between two types of loan.
Can someone help me attach the file. I get the follwoing error message :
"Error Message: The file you are attempting to upload has invalid content for its MIME type. "