My ssi was 41365, my turbo tax form is showing taxable income of 3128. how is that computed.

[xmasbaby0]

Do you mean Social Security benefits---did you enter a SSA1099?   

TAX ON SOCIAL SECURITY

Up to 85% of your Social Security benefits can be taxable on your federal tax return.  There is no age limit for having to pay taxes on Social Security benefits if you have other sources of income along with the SS benefits.  When you have other income such as earnings from continuing to work, investment income, pensions, etc. up to 85% of your SS can be taxable. 

 What confuses people about this is that before you reach full retirement age, if you continue working while drawing SS, your benefits can be reduced if you earn over a certain limit. (For 2019 it was $17,640— for 2020 it was $18,240; for 2021 it was  $18,960.  For 2022 it was  $19,560  —  for 2023 $21,240)

After full retirement age, no matter how much you continue to earn, your benefits are not reduced by your earnings; your employer will still have to withhold for Social Security and Medicare.

To see how much of your Social Security was taxable, look at lines 6a and 6b of your 2022 Form 1040

https://ttlc.intuit.com/questions/1899144-is-my-social-security-income-taxable

https://www.irs.gov/help/ita/are-my-social-security-or-railroad-retirement-tier-i-benefits-taxable

You need to file a federal return if half your Social Security plus your other income is $25,000 when filing single or head of household, or $32,000 when filing married filing jointly, $0 if you are filing married filing separately.

Some additional information:  There are 13 states that tax Social Security—Colorado, Connecticut, Kansas, Minnesota, Missouri, Montana, Nebraska, New Mexico, North Dakota, Rhode Island, Utah, Vermont, and West Virginia.  These states offer varying degrees of income exemptions, but four mirror the federal tax schedule: MN, ND,VT, and WV

[Hal_Al]

Q. How is the taxable amount of social security benefits computed?

A. Social security only becomes taxable when added to sufficient other income. If you are otherwise required to file a tax return, you do need to enter it in TurboTax (TT). TT will determine the taxable portion.

Social security (including SSDI) becomes taxable when your income, including 1/2 your social security, reaches:

Married Filing Jointly(MFJ): $32,000

Single or head of household: $25,000

Married Filing Separately and lived with your spouse at any time during the tax year: $0

For the first  $9,000 (12,000 MFJ), only 50% of your SS is taxed. After that 85% is taxed. And gradually the  50% taxed  is replaced with the 85%. It's the government; they make it complicated. See IRS Publication 915. When TT prints out your return, it will provide you with the  IRS social security worksheet showing you how the taxable amount was calculated.  See the worksheet at page 14 at

https://www.irs.gov/pub/irs-pdf/p915.pdf

After TurboTax (TT) calculates the taxable portion of SS, it puts the total amount of SS on line 6a of form 1040 and the taxable amount on line 6b (2022). TT also produces a worksheet  to show how the taxable amount is calculated. Although most people pay tax on 85% of their SS. it can be less for lower income taxpayers.