Expenses & Taxes on the Lifetime Retirement Projection chart are shown as a dark blue line that overlays income projections. Expenses & Taxes aggregate information that you have included from:
Your budget (My Plan > Expenses)
Your housing costs (My Plan > Home & Real Estate)
Your debt (My Plan > Debts)
Your medical (My Plan > Expenses)
Estimated taxes from income and capital gains based on your projections
Expenses & Taxes will increase based on inflation assumptions entered in each area of the play.