Ignoring an IRS notice can have serious consequences, including additional interest and penalties, tax liens, or even criminal charges in severe cases. The IRS typically provides a specific timeframe to respond to a notice, often 30 or 60 days. Failure to respond or take appropriate action within the specified timeframe can be interpreted as agreeing with the IRS’ proposed adjustments or assessments. This may result in the IRS automatically adjusting your tax liability, potentially leading to penalties and interest charges accruing until the balance is paid. In extreme cases, the IRS may escalate the matter through enforcement actions, such as garnishing wages or seizing assets. It is crucial to promptly review and respond to any IRS notice to avoid these potential consequences. Refer to sections §6601 and §6651 of the Internal Revenue Code for penalties related to failure to pay and failure to file, respectively.