Answer:
In the event that a taxpayer has submitted an annual income tax return and failed to disclose or omitted all or certain part of the income, the taxpayer shall be subject to a penalty of up to two times the tax levied upon the unreported income. In the event that the taxpayer fails to submit an annual income tax return and the tax office discovers that he or she has received taxable income, the taxpayer shall, in addition to payment of the tax levied upon the said income, be subject to a penalty of up to three times the said tax.
Answer:
In the event that a taxpayer has made overpayment of any tax as a result of mis-application or mis-calculation, an application for the refund of overpaid tax supported by substantial evidentiary documentation may be filed within five years from the date of payment thereof. Application for the refund of overpaid tax shall be rejected if it is filed after the said five-year period.
For the overpayment of any tax as a result of mis-application or mis-calculation by the tax collection authorities or other mistakes attributed to governments , the tax collection authorities should refund within two years from the date of awareness of mistakes without the above limit of five- year period.