I did a project on how to save for retirement recently, using my estimated salary as a new Ensign. Basically, I'm going to copy and paste stuff from my final project into here. So pardon the weird first person stuff, I don't feel like editing it.
Here are my assumptions and findings:
1) I am doing something called Index Investing, which may be googled at your leisure and interest.
2) To incorporate index trading into my portfolio, I must examine the Thrift Savings Plan, which is available to United States civil service employees and retirees. Essentially, the particular funds which are a subset of the TSP that I am interested in are the C Fund, which mimics the performance of the S&P 500 Index (large company domestic stocks), the S Fund, which mimics the TSM Index (small to medium domestic companies), the I Fund, a copy of the EAFE Index (international stocks), and the G Fund, which emulates low-risk U.S. government bonds (“Fund Comparison Matrix”). The Thrift Savings Plan beats out most other plans because of its low fees, so it is possible to do index trading through the government option. Essentially, I will incorporate the information given to me by the USAA advisor with my investment strategy by picking a mix of the C, S, I, and G funds which emulates the three-four fund investment strategy that uses (two) domestic stock indexes, one international index, and a government bond allocation (“Three-fund Portfolio”). My strategy is to begin with 5% of my TSP investments in low risk G funds, 40% in the C fund, 40% in the S fund, and the remaining 15% in the I fund. When I hit 30 years old, I will remove 1% from the C fund and S fund and place it in the G fund each year to hedge risk (“Three-fund Portfolio”). Finally, the last part of the initial portfolio was to consider a 529 college savings plan, but I found the requirements to be too restrictive at this time. My financial advisor suggested that I should begin one when and if I have a kid. In the meantime, she suggests saving up for a down payment on a home instead.
Breakdown of my TSP:
5% G Fund
40% C Fund
40% S Fund
15% I Fund
3) My assumptions are based off of data from a military pay table for the fiscal year of 2014, and the summary of returns since inception of the C, S, I, and G funds (“Military Members”). I have curve fit my initial salary of $36,000 with a 20 year forecast of annual increases in salary. Each year, I estimate that I will contribute either 20% or 30% of my income to the TSP account, and I have produced graphs of the following eight cases, with an annual return of 8% on investments, starting salary of $36k with a 3% annual raise. The idea is that you can take on riskier assets at a younger age and move investments into lower risk funds as you get older.
If you guys want any more information regarding why I set it up this way, just let me know. It isn't set up to maximize profits but rather to maximize my laziness and unwillingness to pay a lot of attention to it.
I've attached graphs of projections using the assumptions above.
edit: I've also used Bogleheads for a lot of my research