The deduction for seniors will be on Schedule 1-A line 37. The total deductions from Schedule 1-A will be on Form 1040 line 13b, which might include other deductions besides the deduction for seniors.
The maximum deduction for seniors is $6,000, or $12,000 if married filing jointly and both are 65 or older. The deduction is gradually phased out over a range of income, so even if your income is below the maximum of the range, you might not get the full $6,000 per person. The phaseout starts at Modified Adjusted Gross Income (MAGI) of over $75,000 ($150,000 if married filing jointly).
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