South Carolina Sales Tax Audit Readiness Checklist
Introduction
South Carolina sales and use tax compliance involves collecting, reporting, and remitting sales and use tax on retail sales, including online sales. The South Carolina Department of Revenue
(SCDOR) can examine records to confirm the accuracy of returns or determine tax liability. This
guide explains how to organize documentation, follow notice instructions, and submit complete, well-labeled responses.
SCDOR issues notices to keep taxpayers informed of their compliance status and to request information or documents. Strong audit readiness starts with careful reading of each notice, meeting the applicable deadlines, and providing books and records in a form SCDOR can review. Consistent organization reduces the chance of missed items and repeated follow-up requests.
What This Issue Means
A sales tax audit is an examination of records and transactions to verify the accuracy of returns or determine tax liability. SCDOR has the authority to examine or investigate the place of business, books, invoices, records, electronic data, and other documents that relate to items required on a return. SCDO uses the proper auditing methods necessary for the examination, including sampling.
A review can cover one period or multiple periods, depending on what SCDOR requests.
SCDOR can issue notices when it has questions about a return or needs additional documents.
A notice can also relate to a balance due, a changed return, or an oversimplified filing.
Why does the State Conduct These Reviews
South Carolina requires businesses to file and pay sales and use taxes on retail sales, including online sales, and requires a Retail License to make retail sales in South Carolina. SCDOR administers compliance through filing and payment systems and can request information to verify items on a return. Record review helps confirm that reported figures support the tax liability shown.
Recordkeeping supports a correct determination of tax liability. South Carolina law requires a person liable for a tax or required to file a return to keep books, papers, and records and comply with regulations as SCDOR prescribes. Strong record systems reduce errors during audits and support a cleaner resolution path.
What Happens When Audit Communications Are Ignored
A notice contains invaluable information about what needs attention and the required actions.
SCDOR anticipates adherence to the notice's instructions and timely submission of the required information by the specified deadlines. Unresolved value can lead to collection actions on tax debts, including outcomes described in SCDOR guidance and law.
If a proposed assessment is disputed, a needed protest must be filed within 90 days of the date of notice. SCDOR will make its final assessment and start collection efforts if an unresolved tax matter is not protested promptly. Timely responses preserve appeal rights and keep issues in the correct procedural track.
What This Does Not Mean
An audit notice does not automatically mean additional tax is owed. SCDOR uses notices to request information, verify returns, and resolve compliance questions. A complete submission with clear labels and period coverage keeps the focus on facts and documentation.
A notice can still carry deadlines that affect assessments and collection actions. Every notice should be treated as deadline-driven, and the instructions on the notice should control the response plan. When a Proposed Assessment is involved, the published appeals process provides the proper path for disputes.
Checklist: What To Do After Receiving A Sales Tax Audit
Notice
Step 1: Read The Notice And Capture The Essentials
Read the notice as soon as possible and identify the authority and the requests made. Record the due date shown on the notice and keep the completed notice packet in a dedicated audit folder. Use the contact information listed on the notice for any questions
Note whether the ice asks for additional information on items on a return. Record the title and notice number shown on the notice. This information helps match later correspondence to the correct issue.
Step 2: Gather Returns And Core Reporting Support
Assemble copies of filed ST-3 returns for the periods under review. Compile the Sales and Use
Tax Worksheet support that ties totals, deductions, and net taxable figures to what was reported.
Confirm that gross proceeds exclude sales tax collected, because the ST-3 instructions direct that sales tax should be subtracted.
Organize payment proof for each filing period. MyDORWAY provides payment history and correspondence, and the portal offers status indicators for the payment process. Retain confirmation details that show what was submitted and when it was submitted.
Step 3: Assemble Local Tax And Delivery Documentation
Prepare ST-389 support when local taxes apply. ST-3 instructions state that ST-389 reports local sales and use tax to the counties and municipalities in which transactions and deliveries occur.
ST-389 applies when the business is located in a county that imposes a local tax or when it delivers to a county or municipality that does.
Keep delivery records that support destination sourcing. Organize invoices, shipping confirmations, and delivery documents by period. Clear delivery support helps confirm correct local tax reporting.
Step 4: Prepare Exemption And Deduction Support
Compile documents that support deductions and exemptions claimed. ST-3 instructions state that records must support all deductions claimed. Organize support by deduction type and by period, because reviewers often compare source documents to return line items.
Confirm that local tax rules can differ from state exemption treatment. ST-3 instructions explain that some state deductions may still be subject to local tax when a local tax does not provide the same exemption. Clear labeling prevents confusion when presenting workpapers.
Step 5: Package A Clean Submission Set
Create an index listing each document category and the periods it covers—label documents with the period covered, document type, and a short description. Keep electronic copies when possible and secure sensitive data while maintaining readability.
Prepare a short cover letter that identifies the business, the notice number, the period covered, and the documents included. Keep the letter factual and aligned with the notice request. Identify any missing items and explain alternative options that can be provided.
Step 6: Submit Materials Exactly As The Notice Directs
Follow the submission method and address listed on the notice. Keep proof of subscription, such as a portal or email confirmation, or delivery tracking. Avoid sending to general addresses when a notice lists a specific address or contact.
Keep a complete copy of everything submitted. A full duplicate file supports follow-up requests and prevents repeated work. A clean submission record reduces disputes about what was provided.
Step 7: Track Every Contact And Deadline
Save all emails, letters, and notices connected to the audit. Keep a call log with dates, names, and topics discussed. Record each due date and note when each item was submitted.
Monitor MyDORWAY account history when access is available. MyDORWAY provides immediate access to correspondence and payment history. A consistent tracking system reduces missed deadlines.
- State enforcement notices and responses
- Sales tax audits, assessments, and collections
- Payroll & trust fund tax enforcement issues
- Penalty and interest reduction options
- Payment plans and state tax relief eligibility
- Representation before state tax agencies
Step 8: Use The Appeals Process When A Proposed Assessment Is
Disputed
Use SCDOR’s published appeals process for disputed tax matters. File a written protest within
90 days of the date on the notice for a proposed assessment. If the 90th day falls on a weekend or a state holiday, the deadline is extended to the next business day.
File a protest online through MyDORWAY by using the C-245 form or in writing without the
C-245 as allowed by SCDOR guidance. A timely protest can pause collection activity until the protest is resolved. Keep copies of the protest submission and the notice being protested.
Common Mistakes To Avoid
Avoid ignoring notices; BASCDOR expects action in accordance with the instructions and due dates provided. Avoid submitting partial records that do not tie back to return figures and period totals. Avoid sending records without a period index, because unorganized submissions can trigger follow-up requests.
Avoid assuming a fixed record retention period applies to every taxpayer and every situation.
South Carolina law requires keeping records as SCDOR prescribes, and SCDOR can examine records to determine return accuracy. Records should remain accessible and retrievable for inspection.
Frequently Asked Questions
How Long Does A Sales Tax Audit Usually Take?
SCDOR does not publish a universal audit duration in the sources used for this guide. The timeline depends on the scope of the request and the completeness of the submission.
Organized, period-labeled documentation reduces follow-up cycles.
What If All the Requested Documents Are Not Available?
Explain what exists and identify what is missing in the submission cover letter. Keep the explanation factual and aligned with the notice request. South Carolina law requires maintaining the records as SCDOR prescribes, so provide what can be located for the periods under review.
Can An Appeal Be Filed For A Proposed Assessment?
A written protest can be filed within 90 days of the date on the notice for a Proposed
Assessment. SCDOR explains filing options and deadline rules, including weekend and holiday adjustments. A timely protest can pause collection actions until the protest is resolved.
What Records Support Sales Tax Reporting?
Maintain records necessary to support figures shown on ST-3 returns, including invoices, receipts, deduction support, and local tax reporting support. ST-3 instructions require support for the claimed deductions, and they explain local tax reporting in ST-389. South Carolina law also requires keeping records as SCDOR prescribes.
Can Collection Action Occur If A Notice Is Ignored?
SCDOR states that unresolved notices may result in consequences such as levies, license actions, and tax liens. SCDOR also states that failing to file a written protest within 90 days of the unresolved tax matter results in final assessment and collection activities. Acting within notice deadlines reduces exposure.
Closing
Organizing records by period, clearly labeling returns and support, and closely following each
SCDOR notice improve audit readiness. MyDORWAY supports filing, payment history, and correspondence access, and the notice contact information directs questions to the right unit. A timely response preserves appeal rights when a proposed assessment is involved and keeps the process procedural and trackable.
Facing State Tax Enforcement Action?
If you’ve received a notice related to sales tax or payroll tax enforcement and aren’t sure how to respond, our team can help you understand your options and next steps.
We help with:
20+ years experience • Same-day reviews available
