The penalty for the late filing of tax returns is typically a percentage of the unpaid taxes owed. The exact penalty amount varies based on the country's tax laws and may also depend on factors such as the duration of the delay and the reasons behind it. Additionally, interest may also be charged on any outstanding tax liabilities. It is advisable to check the specific tax laws and regulations in your country or consult with a tax professional to get accurate information regarding the penalties for late filing of tax returns in your jurisdiction.