Base your budget off your net income because this is the amount of money that you realistically have available to spend. (greenpath.com)
One of the best financial tools that consumers have available to do this is called debt consolidation. (debtconsolidationprograms.co)
However, the new spouse's income can affect the calculation of child support since it impacts the available income a paying parent has available to pay toward his child support obligation. (info.legalzoom.com)