Basic income includes: Wages (W-2), Interest Income (1099-INT), Govt Payments (1099-G), SS Benefits (SSA-1099), Alimony Income, State or Local Tax Refund
Non-basic income includes all forms in Basic Return, Distributions (1099-R), Cancelled Debt (1099-C), Gambling Winnings (W-2G), Original Issue Discount (1099-OID), Dividend Income (1099-DIV)
Variable income includes all forms in Advanced Return, Self-Employment/Sole Proprietor Income(1099-NEC, Cash), Partnership/Shareholder Income (Schedule K-1)