Where do I enter the senior tax deduction?

[DoninGA]

There is not a senior tax deduction on a federal tax return.

If you are referring to the Standard Deduction it is automatically increased for any taxpayer age 65 or older by the TurboTax program.

Standard deductions for 2023

Single - $13,850 add $1,850 if age 65 or older
Married Filing Separately - $13,850 add $1,500 if age 65 or older
Married Filing Jointly - $27,700 add $1,500 for each spouse age 65 or older
Head of Household - $20,800 add $1,850 if age 65 or older

[Hal_Al]

There is a credit for the elderly or disabled (you don't have to be both). But because it has not been adjusted for inflation since 1983, very very few people qualify. If you qualify, TurboTax (TT) will automatically calculate it. It goes on Schedule 3, line 6d (2022-3). It is not a refundable credit. That is, you must have a tax liability to offset to get the credit. Very few people, with that little income have an actual tax to offset. 

 Having any social security income at all works against you. Essentially your potential credit is reduced by any tax you "shoulda paid” on the untaxed Social security income. If you have more than $5000 social security ($7500 Married Filing Jointly and both are elderly or disabled) or VA benefits you will not qualify for the credit.

If you think you qualify, and TT missed it, In TurboTax (TT), enter at:

Federal Taxes Tab

Deductions & Credits

-Scroll down to:

--Other deductions & Credits

  -Elderly or Disabled credit

See schedule R for detailed calculations. https://www.irs.gov/pub/irs-pdf/f1040sr.pdf

A simplified  rule of thumb is:  if you have earned a  social security benefit, including SSDI, you won't qualify for the Credit for the Elderly and Disabled.