Why does the TurboTax program calculate a taxable amount for Social Security Disability Benefits when a person's taxable income is below $25000?

[DoninGA]

Up to 85% of Social Security Retirement/Disability/Survivors benefits becomes taxable when all your other income plus 1/2 your social security reaches:

Married Filing Jointly - $32,000
Single or Head of Household - $25,000
Married Filing Separately - 0

The taxable portion of SS benefits, if any, are reported on Form 1040 Line 6b

You can view your Form 1040 at any time using the online editions. Click on Tax Tools on the left side of the online program screen. Click on Tools. Click on View Tax Summary. Click on Preview my 1040 on the left side of the screen.

[HelenC12]

@DoninGA is correct.

How much is taxable depends on the total amount of your benefits and other income. Generally, the higher that total amount, the greater the taxable part of your benefits.

Generally, up to 50% of your benefits will be taxable. However, up to 85% of your benefits can be taxable if either of the following situations applies to you.

• The total of one-half of your benefits and all your other income is more than $34,000 ($44,000 if you are married filing jointly)
•  You are married filing separately and lived with your spouse at any time during 2021.

A worksheet you can use to figure your taxable benefits is in the Instructions for Form 1040. You can use either that worksheet or Worksheet 1.