Actually, no it isnt. Income tax revenue is not the only tax revenue.
U.S. Tax Revenues Fall, Deficit Widens in Wake of New Tax Law
TRY AGAIN
During Fiscal Year (FY) 2018, the IRS collected nearly $3.5 trillion, processed more than 250 million tax returns and other forms, and issued almost $464 billion in tax refunds.
SOI Tax Stats - IRS Data Book | Internal Revenue Service
During fiscal year 2017, the IRS collected more than $3.4 trillion, processed more than 245 million tax returns and other forms and issued more than 121 million individual income tax refunds totaling almost $437 billion.
IRS releases Data Book for 2017 showing range of tax data, including audits, collection actions and taxpayer service | Internal Revenue Service
During Fiscal Year
2016, the
IRS collected more than $3.3 trillion, processed more than 244 million tax returns and other forms, and issued more than $426 billion in tax refunds. ... An electronic version of the
2016 IRS Data Book can be found on the Tax Stats page of
IRS.gov.
https://www.irs.gov/pub/irs-soi/16databk.pdf