Depends also on what % return you expect that capital to continue returning. This seems to be seldom referred to.
When quoting any arbitrary amount of capital required for a modest/comfortable/luxurious retirement, surely it would make sense to include what the capital will actually be earning and from what source?
On, say, 2 million, the difference between having it sitting in a bank a/c at <4% and more actively investing it to get >7% would make a significant difference in the resulting income.
