This is mainly aimed at business owners and the self employed.
Question is when do you know you have enough to retire.
Big question that is as much physiological as financial. Before I did it this was a topic of great discussion and many views and arguments for and against. The truth is that for many they cannot see life with a reduced income and or cannot let go of the money, but there are no equations to determine the answer because one of the big variables is time and you cannot give this a real value. Why, because you do not know how much you have and so you do not know the period for which you need to plan. Solution for me was a spreadsheet of all cost and expenditure with all savings and pensions, then hard thinking because you want a decent standard of living but without wanting the impossible, if you aim too high you will set a target for which you will work until you drop, so as they say you will need to cut the cloth to suit the income.
Few pointers to think about.
You will have higher expenditure in the early years because you can and will want to do more because your body allows it.
Once you reach state retirement and you and the missus have full contributions then this gives a reasonable income to support life and the basics, will you have savings to just top it up for the extras?
For me I calculated total expenditure to cover essentials, increased this by 3% per anum upto my state retirement age to see what it cost, and will my incomes cover or will I need to dip into savings, this gives a good idea and is what made me realise I could do it. But as I said time is precious and I have known people who have got close to retiring, then hanging on for an extra period to get more money that they did not really need and then droping so really retiring is a gamble between time left and accumulating more but do a spreadsheet and it may open your eyes, also dependant on your current age.
Finally it is really great when time is all yours, you can do what you want and just get on with living and forget the stress of working, customers, meeting deadlines, jugling jobs and chasing materials.