No idea why this is in Health and Retirement............
copy of Excel spreadsheet showing yr, begin balance, end balance
before withdrawal, end balance after withdrawal, as suggested by
K. Rate looks like a little over 4.425% so close to OP's.
btw....slight decimal error in formula for BT return (denominator should be
(1-0.4)?
edit: sorry format did not take well but hopefully you can figure it out.
rate
0.04425
Begin
end b w/d
end a w/d
1
1235.00
1289.65
1263.65
2
1263.65
1319.57
1293.57
3
1293.57
1350.81
1324.81
4
1324.81
1383.43
1357.43
5
1357.43
1417.49
1391.49
6
1391.49
1453.07
1427.07
7
1427.07
1490.22
1464.22
8
1464.22
1529.01
1503.01
9
1503.01
1569.52
1543.52
10
1543.52
1611.82
1585.82
11
1585.82
1655.99
1629.99
12
1629.99
1702.12
1676.12
13
1676.12
1750.28
1724.28
14
1724.28
1800.58
1774.58
15
1774.58
1853.11
1827.11
16
1827.11
1907.96
1881.96
17
1881.96
1965.23
1939.23
18
1939.23
2025.05
1999.05