Because the remaining $50,000 is derived from capital gains and qualified dividends, it would be subject to a 0% tax rate (4). All in all, the senior couple could pay $0 in federal income tax.Similarly, a retired couple who are both 66 years old and earning a combined adjusted gross income of $96,700 could reduce their taxable income by $34,700 under the existing standard deduction. The OBBBA’s new seniors deduction, worth $6,000 each or $12,000 together, decreases their combined taxable income to $50,000 ( ...