I suddenly received notice of a sole proprietor tax audit - how should I respond?

A sole proprietor tax audit is an investigation procedure conducted by tax authorities to verify whether the taxes reported by the taxpayer are appropriate.

Being a sole proprietor does not exempt you from tax audit, and just like corporate businesses, you may be subject to investigation if there are errors or possibilities of tax evasion in your filings.

During the tax audit process, business owners may be asked questions or required to provide confirmations, and inspections and verifications are conducted on related documents such as books, contracts, and transaction records.

In this process, materials supporting the filing such as sales/purchase data, account transaction records, and contracts become important judgment criteria.

Typical cases selected for sole proprietor tax audit include cases where tax filings are suspected of not being honest, where the source of funds is unclear, where expenses are excessive relative to income, or where on-paper transactions are suspected.

Receiving a tax audit notice does not necessarily mean excessive taxes will be imposed, but careful response is needed because the materials submitted and explanations given during the investigation can directly affect taxation determinations.

First, document and data management supporting the basis of filings is important.

Contracts, sales/purchase data, and transaction records are key materials that can prove the legitimacy of the filings, so they must be systematically maintained.

If such materials are not prepared, there may be unnecessary misunderstandings or additional taxation.

Also, you do not need to submit all materials unconditionally during the tax audit process.

You do not need to submit materials unrelated to the scope of the investigation, and it is important to identify the issues the tax officials are trying to verify and respond focusing on key matters.

Responding emotionally during the investigation or giving impromptu answers can create unfavorable situations, so caution is needed.

If taxation is imposed as a result of the tax audit, you can apply for pre-taxation review at the pre-taxation stage, and after taxation, you can contest through tax tribunal claims, administrative lawsuits, etc.

Sole proprietor tax audit is a procedure where tax and legal judgments are made simultaneously.

Since the additional tax assessment and possibility of disputes can vary greatly depending on the initial response method, systematic response is needed from the investigation stage.

Daeryun Law Firm provides comprehensive tax legal services, with tax-specialized attorneys and tax accountants collaborating on sole proprietor tax audit response, opinion submission at the pre-taxation stage, tax appeals, and tax litigation.

If you have received a tax audit notice, we recommend reviewing your response direction in advance.