South carolina department of revenue sales tax 2026

1. Click ‘Get Form’ to open the South Carolina Department of Revenue Sales Tax Return (ST-3) in the editor.
2. Begin by filling in your Retail License or Use Tax Registration number, along with your FEIN and SID Number. Ensure that the Period Ended is correctly noted in MM-YY format.
3. Complete the worksheet on the reverse side first. Enter total gross proceeds of sales, rentals, and withdrawals for own use on line 1.
4. On line 2, input the total amount of deductions from Item 5 of the worksheet. Calculate net taxable sales by subtracting line 2 from line 1 and enter it on line 3.
5. Multiply the net taxable sales (line 3) by 6% to determine your State Sales and Use Tax due, which you will enter on line 4.
6. If applicable, complete additional tax calculations from ST-389 and add them to determine total taxes due on line 6.
7. Calculate any taxpayer discounts if eligible and enter this amount on line 7. Subtract this discount from total taxes due to find your net tax payable on line 8.
8. Add any penalties or interest to arrive at the total amount due on line 10. Ensure all fields are completed before signing and dating the return.

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