§ 22.
(b)
Qualified individual
For purposes of this section, the term “qualified individual” means any individual—
(1)
who has attained age 65 before the close of the taxable year, or
(2)
who retired on disability before the close of the taxable year and who, when he retired, was permanently and totally disabled.
(d)
Adjusted gross income limitation
If the adjusted gross income of the taxpayer exceeds—
(1)
$7,500 in the case of a single individual,
(2)
$10,000 in the case of a joint return, or
(3)
$5,000 in the case of a married individual filing a separate return,
the section 22 amount shall be reduced by one-half of the excess of the adjusted gross income over $7,500, $10,000, or $5,000, as the case may be.
(e)
Definitions and special rules
For purposes of this section—
(1)
Married couple must file joint return
(3)
Permanent and total disability defined
([Aug. 16, 1954, ch. 736], [68A Stat. 15], § 37; [Aug. 9, 1955, ch. 659, § 1], [69 Stat. 591]; [Jan. 28, 1956, ch. 17, § 1], [70 Stat. 8]; [Pub. L. 87–792, § 7(a)], Oct. 10, 1962, [76 Stat. 828]; [Pub. L. 87–876, § 1], Oct. 24, 1962, [76 Stat. 1199]; [Pub. L. 88–272, title I, § 113(a)], title II, §§ 201(d)(3), 202(a), Feb. 26, 1964, [78 Stat. 24], 32, 33; [Pub. L. 93–406, title II, § 2002(g)(1)], Sept. 2, 1974, [88 Stat. 968]; [Pub. L. 94–455, title V, § 503(a)], title XIX, § 1901(c)(1), Oct. 4, 1976, [90 Stat. 1559], 1803; [Pub. L. 95–600, title VII]