Share your insights or perspective on the financial matter presented in the input.

What is the preferred way to set up personal finances?
The absolute best advice I ever received was this:  You will need three categories of savings in your life: 1) Retirement Savings  This is money you put away (in 401-Ks and IRAs) for the time in your life when you can no longer earn enough income to support yourself. You do not borrow against it nor do you withdraw from it in emergencies or to buy a house.  2) Catestrophic savings  This is money you put back in case of serious events. Events like: prolonged job loss, hospitalization, extended illness, loss of home, severe and significant loss of transportation, very large aplliance loss or damage. You do not take trips to the Bahamas or buy diamond rings with this money.  3) Urgent, relatively small,  need savings. This is the savings you can use from time to time. Use it for bills that arise unexpectedly, unforseen shortfalls in your budget, needed repairs such as car repairs and small appliance repairs, surprising fines, fees, and bills.  Put 10% of your income into each category of savings. 10% intro retirement savings, another, separate, 10% intro Catestrophic savings, and yet another 10% intro urgent, small need, savings.  So, as you can see, already 30% of your income is already spoken for. Divide up the remaining 70% intro fixed (I recommend 50% toward fixed expenses) and variable expenses. Fixed includes those things that you pay once every month such as housing, utilities, car payment, debt repayment, etc. Variable includes discretionary things like eating out, gifts, and  splurges.  Most importantly, partner with someone who is your opposite. If you are a saver at heart partner with a spender. If you are a spender partner with a saver.  There are three rules to live by regarding the budget: A) no one spends any money unless it is in the budget B) the budget only includes those things to which both the saver and the spender agree C) the budget can, and will, be modified as the pay period unfolds.  A budget is a plan not a means to beat the other person up. Plans change as new information arises. A budget must be flexible. The urgent use savings will help to make  the budget flexible.  Edit due to comments: @enderland Perhaps you do not have children living with you. I am a saver, my wife is a spender. When it came time to do the budget I would forget things like the birthdays of my children, school fees due next pay period, shopping for Christmas gifts, needed new clothes and shoes for the children, broken small appliances that needed to be fixed or replaced, special (non reoccurring) house maintenence (like steam cleaning the carpet), gifts to relatives and friends, exceptional assistance to relatives, etc.  As my wife was the spender she would remind me of these things. Perhaps  you do not have these events in your life. I am glad to have these events in my life as that means that I have people in my life that I care about.  What good is a fat savings account if I have no loved ones that benefit from it?