U have 100k to invest in the market and in ten years time u want to use your capital to provide an income and leave the capital to your family.

Straightaway that rules out an annuity.

Option one.

Invest in a portfolio of dividend paying shares, currently yielding 8% and compound for ten years at 8% a ‘pension’ of 16k pa. The total depends on being able to re-invest at 8% but although the total is not in doubt it might take longer by a couple of years.

Option two.

Use the 4% rule. U sell shares every year to withdraw 16k in January when u keep everything crossed that there has been a Santa Rally. One certainty is that after u start selling shares there may be a market crash, so the perceived wisdom is to have a cash fund of 3 years ‘pension.’

Total of your portfolio would need to be 450k, GL with that. One fact is that if u intend to use the 4% rule and invest in World Trackers the perceived wisdom is they will grow by around 7% but not in a straight line as they have long periods of going sideways. After ten years your 100k could be worth 200k. If u have longer u need to DYOR.