I-333: Anhydrous Ammonia Additive Credit (Revision 2019-07)
South Carolina · South Carolina DOR · Used for tax years 2024, 2025, 2026
South Carolina Form I-333 claims a refundable Individual or Corporate Income Tax credit for the cost of an additive used to reformulate anhydrous ammonia. It reports the amount paid for the additive and must be attached to Form SC1040, SC1065, SC1120, or SC1120S.
Who files this form
Form I-333 is used to claim the Anhydrous Ammonia Additive Credit. The credit is available to resident taxpayers engaged in farming who use anhydrous ammonia for agricultural purposes.
The form must be attached to the SC1040, SC1065, SC1120, or SC1120S.
What you'll need
To complete Form I-333, you need:
- Your name.
- Your Social Security Number (SSN) or Federal Employer Identification Number (FEIN). Individual taxpayers must provide their SSN.
- The amount you paid to purchase the additive.
- The SC1040, SC1065, SC1120, or SC1120S to which you will attach this form.
How to file
Enter your name and SSN or FEIN. On line 1, enter the amount you paid for the additive.
Attach Form I-333 to your SC1040, SC1065, SC1120, or SC1120S. The supplied text does not provide a mailing address or e-filing directions.
Common mistakes
- Leaving the form unattached: Form I-333 must be attached to the SC1040, SC1065, SC1120, or SC1120S.
- Omitting an individual taxpayer’s SSN: The form states that providing your SSN is mandatory if you are an individual taxpayer.
Questions people ask
How much is the credit?
The credit equals the amount you paid to purchase the additive.
Is the credit refundable?
Yes. The form describes it as a refundable credit against Individual or Corporate Income Tax.
What is the additive required to do?
The additive must prevent the conversion of anhydrous ammonia’s active ingredients into methamphetamine or related substances.
Why must an individual taxpayer provide an SSN?
The form states that an SSN is mandatory for individual taxpayers and is used for identification in administering taxes.