Retirement Income Planning Basics

The Trinity Study Tables

Table 2: Portfolio Success Rate: Percentage of all Past Payout Periods From 1946 to 1995 That are Supported by the Portfolio

Note: Numbers in the table are rounded to the nearest whole percentage. The number of overlapping 15-year payout periods from 1946 to 1995, inclusively, is 36; 20-year periods, 31; 25-year periods, 26; 30-year periods, 21. Stocks are represented by Standard and Poor's 500 Index, and bonds are represented by long-term, high-grade corporates.
Data source: Calculations based on data from Ibbotson Associates.

Portfolio Composition/ Payout Period	Withdrawal Rate as a % of Initial Portfolio Value
	3	4	5	6	7	8	9	10	11	12
100% Stocks
15 Years	100	100	100	100	100	100	97	86	69	64
20 Years	100	100	100	100	100	97	81	61	45	42
25 Years	100	100	100	100	100	88	77	46	42	38
30 Years	100	100	100	100	100	90	76	52	52	38
75% Stocks-25% Bonds
15 Years	100	100	100	100	100	100	100	86	69	53
20 Years	100	100	100	100	100	97	77	48	42	32
25 Years	100	100	100	100	100	85	54	42	31	27
30 Years	100	100	100	100	100	81	52	48	38	29
50% Stocks-50% Bonds
15 Years	100	100	100	100	100	100	94	78	56	42
20 Years	100	100	100	100	100	94	61	39	26	13
25 Years	100	100	100	100	100	69	38	19	4	0
30 Years	100	100	100	100	100	48	33	10	0	0
25% Stocks-75% Bonds
15 Years	100	100	100	100	100	100	89	53	25	17
20 Years	100	100	100	100	100	68	23	13	6	3
25 Years	100	100	100	100	73	15	8	0	0	0
30 Years	100	100	100	100	19	0	0	0	0	0
100% Bonds
15 Years	100	100	100	100	100	72	39	33	19	11
20 Years	100	100	100	94	42	29	23	10	0	0
25 Years	100	100	96	54	15	12	4	0	0	0
30 Years	100	100	48	10	0	0	0	0	0	0