Here is the link that relates to my question:
Cell C13 is a Retirement Annuity contribution of my choosing.
Column E is taxable income at various marginal tax rates.
I can reduce my taxable income by the value in Cell C13.
Currently I am manually allocating the value in Cell C13 into Column H.
In this example I have manually inserted $88999 into H21 and then calculated H20.
I would like this somehow to be dynamic.
The allocated $89999 to H21 because I need to max out the amount in E21 before allocating to the next cell.
Changing Gross Income in Cell C8 dynamically populates Column E so this makes my problem all the more challenging.
In a nutshell, the only cells that should be editable are yellow. I would like Column H NOT to be yellow.