Step 7. INC1PCTRH2 = INC1 expressed as a percent of the poverty level income threshold for a household of 2 (RH2). Formula 6: For 2009 INC1PCTRH2 = INC1/RH2 = , a number > 1 means above the poverty level income threshold for a household of 2. Step 8. INC1PCTRH4 = INC1 expressed as a percent of the poverty level income threshold for a household of 4 (RH4). Formula 7: RH4 = H4/CPI (2009) in hundredths RH4 = Formula 8: INC1PCTRH4 = INC1/RH4. For 2009 INC1PCTRH4 = , a number