The answer on these inputs
$750,000 produces $30,000 in year one at 4.0%. Against $40,000 of spending that is 75% coverage — the spend is larger than a 4% (or chosen) withdrawal. A constant 5.0% return exhausts the portfolio in year 27. Across 1,000 seeded paths the spend lasts the full horizon in 22% of worlds; the 10th-to-90th ending range is $0 to $1,258,093.
Change the inputs
First-year income at the rate$30,000
Coverage of the spend75%
Years the spend lasts27
1,000-path success22%