Tax filing · South Carolina
Business tax filing in South Carolina, prepared by a team of Certified Accountants, CPAs and Enrolled Agents
Federal returns (1120, 1120-S, 1065, Schedule C) and your South Carolina state return, prepared from New York and Mumbai for a flat fee quoted upfront, from $99.
Get my quote Call +1 (302) 601-0115 Book a free 30-minute call
- 447 Broadway, 2nd Floor, New York, NY 10013
- Certified Accountants, CPAs and Enrolled Agents
- Flat fees quoted upfront
- Replies within 8 hours
Get a fixed quote
Tell us the basics. We reply within 8 hours, no obligation.
What South Carolina asks of a business
South Carolina has personal income tax from 0% to 6.2%, a 5% corporate income tax and a 6% state sales tax (about 7.49% combined with local rates). An LLC in the state faces no annual report or annual fee for an LLC. The table below is what we check first on every South Carolina engagement.
| South Carolina at a glance | What applies | Notes |
|---|---|---|
| Personal income tax | Personal income tax from 0% to 6.2% | Graduated brackets (2025 table) |
| Corporate income tax | A 5% corporate income tax | Flat corporate rate (2026 table) |
| Sales tax | A 6% state sales tax (about 7.49% combined with local rates) | Combined figure is the population-weighted average with local rates (2026 table) |
| LLC fees | Formation $110; No annual report or annual fee for an LLC | $0 |
| Corporation fees | Annual report | Corporations file an annual report with the state; fee and date confirmed at engagement |
| S-corp election | Federal election recognised | Federal S election recognised; a pass-through entity (PTE) tax election may be available, confirmed at engagement |
Figures checked 2026-09 against South Carolina Department of Revenue and South Carolina Secretary of State. Rates and fees change; we confirm the current numbers for your entity before we quote.
What we prepare for South Carolina businesses
- Form 1120 (C-corporation) and Form 1120-S (S-corporation)
- Form 1065 with Schedule K-1s (partnerships and multi-member LLCs)
- Schedule C with Form 1040 (sole proprietors and single-member LLCs)
- South Carolina state income tax return, filed with the federal return
- Form 5472 with pro forma 1120 for foreign-owned single-member LLCs
- Sales tax registration and returns where South Carolina nexus exists
- 1099-NEC filings and extension requests
- Late and unfiled years, with penalty-relief requests where reasonable cause exists
Things South Carolina owners get wrong
The federal return is only half the job. South Carolina's personal income tax from 0% to 6.2% reaches pass-through owners through their personal return, and the entity itself faces no annual report or annual fee for an LLC. Federal S election recognised; a pass-through entity (PTE) tax election may be available, confirmed at engagement.
Nobody sets out to miss these. They are missed because a seasonal preparer handles the federal return in April and nobody owns the state calendar for the rest of the year. We keep the calendar.
Who we file for in South Carolina
- South Carolina LLCs and S-corps owned by residents
- Foreign-owned South Carolina LLCs (Form 5472 filers)
- E-commerce sellers with South Carolina inventory or customers
- Agencies, consultants and professional practices
- Businesses behind by a year or more
- CPA firms that need white-label preparation capacity
How it works
- Free 30-minute call, or the form on this page.
- Fixed quote in writing, by entity and complexity.
- Secure document upload.
- Draft return for your approval.
- Filed, with confirmation and copies.
Pricing in South Carolina
Business returns from $99, quoted by entity and complexity before any work starts. South Carolina state or entity filings are quoted with the federal return, so there is one number, not a list of add-ons. Late years are priced per year. Catch-up bookkeeping, where needed, is a fixed project quoted after a free review.
We do not write "guaranteed", "maximum refund" or "IRS-approved" anywhere, because no honest preparer can. We prepare returns correctly and keep the confirmations.
South Carolina questions people ask first
Do I need to file a South Carolina state return for my LLC?
Usually yes. South Carolina has personal income tax from 0% to 6.2%, so LLC and S-corp income flows to the owner's South Carolina return, and the entity may have its own filing. We prepare both with the federal return.
When is my South Carolina business return due?
Federal 1120-S and 1065 returns are due March 16, 2026 (September 15 on extension); 1120 and Schedule C returns April 15 (October 15 on extension). South Carolina entity filings run on their own calendar: no annual report or annual fee for an LLC. We track both.
I own a South Carolina LLC but live outside the US. What do I file?
A foreign-owned single-member LLC files Form 5472 attached to a pro forma Form 1120, which cannot be e-filed and carries a $25,000 penalty if missed. We prepare it, fax-file it and keep the transmission report. Multi-member LLCs file Form 1065 with K-1s.
Does South Carolina recognise my federal S-corp election?
Yes. Federal S election recognised; a pass-through entity (PTE) tax election may be available, confirmed at engagement
What if I am behind by a year or more?
We prepare each open year, rebuild the books if needed, and include a written reasonable-cause request for penalty relief where one applies. Penalty relief is the IRS's decision; we prepare the request and do not promise the outcome.
Who prepares and signs my return?
A team of Certified Accountants, CPAs and Enrolled Agents working from New York and Mumbai. A US-credentialed preparer reviews and signs. Replies within 8 hours, one point of contact.
Ready for a fixed quote in South Carolina?
Two sentences from you. A written price within 8 hours. No obligation, no long-term contract.
Get my quote Call +1 (302) 601-0115 Book a free 30-minute call WhatsApp