Clean Tax ID - Tax ID clean-up
Bring your company's tax ID back to a clean, safe, audit-ready state
Explanation requests from the tax office, questionable input invoices, books left unfinished for years or a tax ID flagged with an abnormal status - the longer they sit, the more they cost. Kaizen's founders, with 17+ years at Big4, review everything, ring-fence the risk and fix it at the root with you.
- A tax ID health check across 6 areas: legal status, invoices, books, cash & bank, payroll & social insurance, year-end filings
- Risks ring-fenced and quantified before the tax office finds them
- Representation and well-argued explanations in meetings with the tax office
- A clean set of books and processes handed back so problems do not recur
Clean Tax ID
Do any of these sound familiar?
- An explanation request, a document request or an audit decision has arrived and you do not know where to start.
- A former supplier has abandoned its registered address and your input invoices are now flagged as risky.
- Books were left unfinished or done "just for show" for years, and tax returns do not match the financial statements.
- Many payments are made in cash, and customer receipts land in the owner's personal bank account.
- Social insurance and employees' PIT are underpaid or not finalized on time.
- You are preparing to raise capital, sell shares or dissolve the company, but are not sure the tax ID is clean enough for due diligence.
Kaizen
What you get
Tax ID health report
Your tax ID status, outstanding obligations, risky invoices and open years - with a priority level for every issue.
Quantified risk map
Estimated back taxes, late-payment interest and potential penalties by scenario, so management decides on numbers, not guesses.
Remediation plan and amended filings
Supplementary returns, invoice adjustments, completed supporting documents, and voluntary corrections where that beats waiting for the tax office to find the issue.
Representation before the tax office
Explanation files grounded in the law, meetings attended alongside you, and follow-up until the case is closed.
Clean books and processes
Books rebuilt or corrected, with controls over invoices, payments and payroll so the risks do not come back.
How the clean-up works
- 01
1. Quick health check
You complete the 12-question health check, Kaizen looks up your tax ID status and we hold a 30-minute call to pin down the core issues.
- 02
2. In-depth review
We reconcile invoices, returns, books, bank statements and payroll, then issue a quantified risk report.
- 03
3. Remediation and representation
We execute the agreed plan: supplementary filings, adjustments, completed documents and meetings with the tax office.
- 04
4. Handover and upkeep
We hand over clean books, control procedures and a compliance calendar, with optional ongoing support to keep the tax ID healthy.
Clean Tax ID
Tax ID health check
12 questions, about 5 minutes. Results are scored across 6 risk areas and point to what needs attention first. The higher the score, the higher the risk.
Free gift: 2026 Tax Risk Checklist (30 points)
30 checkpoints the tax office typically looks at in a year-end audit - from tax ID status, invoices and payment evidence to payroll and social insurance - updated for the new tax laws effective in 2025-2026.
FAQ
Frequently asked questions
My tax ID has an abnormal status. Can it be restored?
In many cases, yes - but the root cause has to be addressed: not operating at the registered address, late filings, tax debt or an improperly processed suspension. Kaizen checks the exact status, identifies the missing filings and obligations, and maps out a restoration path.
Will a voluntary correction lead to heavier penalties?
Generally, a company that corrects its filings before an audit decision is issued is in a better position than one whose errors are found during the audit. Each case still needs to be worked out, so Kaizen quantifies the scenarios before you decide.
How do you handle input invoices from a supplier that has disappeared?
The key is proving the transaction was real: contracts, delivery records, bank payment evidence, transport documents and how the goods or services were used. Kaizen reviews each invoice, strengthens the evidence and only reverses what cannot be supported.
Can books that were abandoned for years be rebuilt?
Yes. Kaizen rebuilds the books from e-invoices, bank statements, contracts and filed returns, then reconciles them to find gaps and proposes the right adjustment for each year.
Do you provide reports in English for our foreign parent?
Yes. The risk report and remediation plan are bilingual (Vietnamese - English), so local management and the parent company in Japan, Korea or Singapore can follow the same document.
Is our company information kept confidential?
Yes. All data is used only for the review and advice, under a confidentiality agreement signed before Kaizen accesses any records.