Korea tax guide
Korean Tax Audit Preparation for Foreigners
Income Tax
Who this guide is for
- Foreigners receiving an NTS inquiry
- Foreign freelancers and sole proprietors
- People with overseas income or accounts
- Taxpayers preparing records proactively
Quick Answer
A Korean tax audit or information request should be handled by verifying the notice, scope, tax years, deadlines, and responsible office; preserving records; reconciling filed returns to source data; and giving accurate, organized responses. Do not ignore the notice or alter records after receiving it.
Key points
- Authenticate the notice and deadline.
- Preserve original records and translations.
- Reconcile returns before explaining differences.
- Answer the question asked without speculation.
- Use professional help for material or cross-border issues.
Step-by-step explanation
Verify the document
Confirm the sender, tax office, officer, reference number, tax type, period, issue under review, requested materials, and response date using official contact channels.
Freeze and inventory records
Preserve paper and electronic records, including email, messaging, cloud files, accounting exports, platform statements, and foreign records. Do not silently reconstruct or overwrite source data.
Reconcile before responding
Tie filed revenue, withholding, expenses, VAT, assets, overseas income, and bank movements to source documents. List known differences and missing evidence separately.
Manage communication
Keep a log of calls, submissions, deadlines, and questions. Provide indexed files and concise explanations, request written clarification when scope is unclear, and seek qualified representation when risk is significant.
Documents you may need
- Audit or inquiry notice
- Filed returns and payment receipts
- Income and expense ledgers
- Contracts, invoices, and bank statements
- Residence and treaty evidence
- Foreign income and account records
- Prior correspondence
Common mistakes
- Ignoring or delaying the notice
- Changing or recreating records without disclosure
- Sending unorganized data with no reconciliation
- Guessing at facts or translations
- Discussing settlement before understanding the issue
When should you ask a tax professional?
Ask a qualified tax professional if you have income from several countries, business income, unclear tax residency, treaty questions, missing documents, late filing concerns, or a visa situation that depends on tax records. This site explains general patterns only and cannot review your personal facts.
FAQ
Is every NTS message a tax audit?
No. It may be a verification request, correction notice, payment notice, or formal audit. Read the document title, legal basis, scope, and response instructions.
Should I translate every document?
Translate what is necessary for an accurate response and keep the original. Confirm expectations with the responsible officer.
When should I hire a tax professional?
Consider help early when amounts are material, records are incomplete, penalties are possible, or the issue involves treaties, foreign income, or business classification.
Official Sources to Verify
Tax rules and filing procedures in Korea may change depending on your visa status, income type, tax residency, and the tax year. Before making a tax decision, always verify your situation with official sources or a qualified professional.