He also signed the Revenue Act of 1861, creating the first U.S. income tax—a flat tax of 3 percent on incomes above $800 ().
hiː ˈɔːlsoʊ sˈaɪnd ðə ɹˈɛvənˌuː ˈækt ʌv wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd sˈɪksti wˈʌn, kɹiːˈeɪɾɪŋ ðə fˈɜːst jˈuː.ˈɛs. ˈɪŋkʌm tˈæks—ɐ flˈæt tˈæks ʌv θɹˈiː pɚsˈɛnt ˌɔn ˈɪŋkʌmz əbˌʌv dˈɑːlɚɹ ˈeɪthˈʌndɹɪd.