What is the fair way to divide sale of parents home put in our 5 names 15 yrs ago? A few siblings are in higher tax bracket but want tax paid first then divide equal?

We are putting sale money in 5 savings accounts and if mom would like some money for a trip or whatever she can ask us for some of the money but not thinking she will actually use much of it.  $225,000 divided by 5 is this even much tax to worry about or being one of the lower tax siblings will I lose the most in the end?  I feel like it's the rich get richer and poor get poorer on this!  I don't want it to be a fight just what's fair!  They said if tables were turned I would want the break?