topic Should the SC addback of the extra $1500 st. deduct. from the federal OBBB be included in both the resident and nonresident SC forms. It only shows on the resident form in State tax filing

Should the SC addback of the extra $1500 st. deduct. from the federal OBBB be included in both the resident and nonresident SC forms. It only shows on the resident form

drmsbm — Mon, 16 Feb 2026 23:58:29 GMT

I enter all the same information for both the South Carolina resident and non-resident forms (comparing which is most favorable for my situation), but Turbotax is only including the $1500 additional standard deduction amount from the OBBB on the resident return, and not in the non-resident return. This appears to be a Turbotax issue.

Re: Should the SC addback of the extra $1500 st. deduct. from the federal OBBB be included in bot...

SharonD007 — Tue, 17 Feb 2026 04:38:27 GMT

Please clarify why you are comparing a South Carolina resident and non-resident return.

Re: Should the SC addback of the extra $1500 st. deduct. from the federal OBBB be included in bot...

drmsbm — Tue, 17 Feb 2026 16:25:14 GMT

SC allows one to use a resident or nonresident return as a part-year resident, depending on which is the most beneficial. I do not think this is relevant to the apparent issue, however.

Re: Should the SC addback of the extra $1500 st. deduct. from the federal OBBB be included in both the resident and nonresident SC forms. It only shows on the resident form

k2michelin — Tue, 17 Feb 2026 16:34:40 GMT

If you have an addback issue with SC1040, you might have a look also at the addback for SC state income tax to be sure it's not adding it back twice. Take a look at lines 1(a) through 1(e), you may find the state income tax added back in both lines 1(a) and also buried in line 1(e)...

k2michelin

Re: Should the SC addback of the extra $1500 st. deduct. from the federal OBBB be included in both the resident and nonresident SC forms. It only shows on the resident form

drmsbm — Tue, 17 Feb 2026 16:43:58 GMT

the SC return is not adding back twice….easy to see when comparing federal to SC sate taxable income amounts, with the difference being $1500.

Re: Should the SC addback of the extra $1500 st. deduct. from the federal OBBB be included in bot...

AnnetteB6 — Wed, 18 Feb 2026 16:49:53 GMT

In order to take a closer look at the situation you described, it would be useful to have a diagnostic copy of your tax data file. The diagnostic file will not contain personally identifiable information, only numbers related to your tax forms. This will also be the first step in getting this reported to the development team for further investigation and possible updates.

If you would like to provide us with the diagnostic file, follow the instructions below and post the token number along with which version of TurboTax you are using in a follow-up thread.

Use these steps if you are using TurboTax Online:

Sign in to your account and be sure you are in your tax return.
Select Tax Tools in the menu to the left.
Select Tools.
Select Share my file with agent.
A pop-up message will appear, select OK to send the sanitized diagnostic copy to us.
Post the token number here.

If you are using a CD/downloaded version of TurboTax, use these steps:

Select Online at the top of the screen.
Select Send Tax File to Agent.
Click OK.
Post the token number here.

If you are using a Mac version of TurboTax, use these steps:

Go to the Menu at the top of the screen and select Help.
Then, Send Tax File to Agent.
Post the token number here.

@drmsbm

Re: Should the SC addback of the extra $1500 st. deduct. from the federal OBBB be included in bot...

drmsbm — Thu, 19 Feb 2026 17:06:58 GMT

I think you just need to have a specialist look at the situation I described with a standard verification file TT used testing accuracy of an SC return.

Re: Should the SC addback of the extra $1500 st. deduct. from the federal OBBB be included in bot...

RogerD1 — Thu, 19 Feb 2026 18:47:49 GMT

It's true that South Carolina will allow you to file as a resident or non-resident if you lived in the start for part of the year. However, the tax treatment of resident and Non-resident SC returns are very different from one another.

When filing as a resident of South Carolina, the addbacks for the differences in the itemized deduction and the state addbacks are on page 1 of SC 1040. If you file as a non-resident, this part of the SC 1040 is blank because the income determination and addbacks of Standard and itemized deductions occur on Schedule NR near line 46. I have a test case open in the download version of TurboTax that is figuring the South Carolina deductions and addbacks correctly.