Turbotax Deluxe shows our std deduction as $26.6K, not $24K. Why? I can't find a form explaining the $26.6K. Itemized deductions are $10K. Married filing jointly, 65+

If you are over the age of 65, the standard deduction is increased by an additional $1300 per person. Please see the attachment included.

Thanks,  Just found the explanation on the Std. Deduction Worksheet, line 3b, but no calculations.