The IRS collects federal income taxes and enforces the tax code

The Internal Revenue Service (IRS) is the federal agency that collects income taxes from individuals and businesses, and it enforces the rules about who owes what. It is part of the U.S. Department of the Treasury. When you file a tax return, you are sending information to the IRS. When the IRS audits someone or sends a notice about unpaid taxes, that is the IRS doing its job.

The IRS does not decide tax policy — Congress writes the tax laws, and the IRS interprets and enforces them. If you disagree with an IRS decision about your taxes, you have the right to challenge it, but the IRS is the body that makes the initial information about what you owe.

Key Takeaways

  • The IRS is a federal agency that collects income taxes and enforces tax law; it is not a separate entity you can negotiate with outside the tax system.
  • The IRS sends notices when it believes you owe money, made an error on your return, or need to provide more information — receiving a notice does not mean you are in legal trouble.
  • You can contact the IRS by phone, mail, or through its website, and you have the right to dispute any IRS decision through a formal appeals process.
  • The IRS has payment plans and hardship programs for people who cannot pay their full tax bill at once.

How the IRS processes your tax return

When you file a tax return, the IRS receives it and checks whether the numbers match what employers, banks, and other organizations reported about your income. If everything matches, your return is processed and any refund is sent to you. This usually takes a few weeks to a few months, depending on the method you used to file.

If the IRS finds a mismatch — for example, your employer reported income that does not appear on your return — the IRS will send you a notice asking for an explanation or correction. These notices are routine and do not automatically mean you made a mistake or owe money. You have the right to respond to any notice and provide documentation to support your position.

What an IRS notice means

An IRS notice is a letter the agency sends when it needs information from you, found a discrepancy on your return, or believes you owe additional tax. Common notices include CP2000 (income mismatch), Notice of Deficiency (the IRS believes you owe more tax), and Collection notices (the IRS is pursuing unpaid taxes).

Receiving a notice does not mean you are under criminal investigation or that you have committed fraud. Most notices are about routine matters like unreported income or a calculation error. You have a deadline to respond — usually 30 days — and ignoring a notice can result in the IRS taking collection action, such as wage garnishment or bank levy. If you cannot pay or disagree with the notice, you should respond within the deadline, even if your response is a request for more time.

Your rights when dealing with the IRS

The IRS operates under a Taxpayer Bill of Rights that gives you specific protections. You have the right to know why the IRS is contacting you, what documents it needs, and how long you have to respond. You have the right to representation — you can hire a tax professional, attorney, or enrolled agent to communicate with the IRS on your behalf. You also have the right to appeal any IRS decision through the IRS Appeals Office, which is separate from the office that made the original decision.

If the IRS has made an error or treated you unfairly, you can file a complaint with the Taxpayer Advocate Service, an independent office within the IRS that helps resolve disputes. You do not need to hire a lawyer or pay a fee to use this service.

Payment plans and hardship options

If you owe taxes but cannot pay the full amount, the IRS offers installment agreements that let you pay over time. A short-term agreement (120 days or less) has no setup fee. A long-term agreement (more than 120 days) has a setup fee, usually between $31 and $225 depending on how you set it up. You can request an installment agreement by phone, mail, or through the IRS website.

If you are in severe financial hardship, you may may have access to for Currently Not Collectible status, which temporarily pauses collection action while you recover financially. This does not erase the debt — interest and penalties continue to accrue — but it stops wage garnishment and bank levies. You must reapply periodically to maintain this status.

How to contact the IRS

The IRS operates a phone line at 1-800-829-1040 for general questions and account issues. Wait times are often long, especially during tax season. You can also mail correspondence to the IRS address listed on any notice you receive, or visit an IRS office in person if you need face-to-face help.

The IRS website (irs.gov) has tools to check your refund status, set up a payment plan, and download forms and publications. If you have a complex issue or believe the IRS has made a serious error, the Taxpayer Advocate Service can be reached at 1-877-777-4778 or through irs.gov/advocate.

The difference between the IRS and other tax bodies

The IRS handles federal income tax. Your state may have its own tax agency that collects state income tax — these are separate organizations with separate rules and processes. Some cities also collect local income tax. If you owe taxes to multiple jurisdictions, you will need to deal with each one separately.

The IRS also differs from the Social Security Administration and other federal agencies. The IRS does not manage Social Security, Medicare, or unemployment benefits — those are handled by different agencies. If you have questions about benefits, you need to contact the agency that runs that program, not the IRS.

Frequently Asked Questions

What happens if I ignore an IRS notice?

The IRS will continue collection action, which can include wage garnishment, bank levies, or a lien on your property. Ignoring a notice does not make it go away. You should respond within the deadline stated on the notice, even if your response is a request for more time or a dispute of the amount owed.

Can the IRS take my house or car?

Yes, but only after following specific legal steps. The IRS must send you a Notice of Federal Tax Lien, which is recorded publicly, and then a Notice of Intent to Levy. You have rights to challenge these actions and to request a hearing before seizure occurs. Contact the Taxpayer Advocate Service if you believe the IRS is moving toward seizure.

Do I need a lawyer to deal with the IRS?

No. You can represent yourself, hire a tax professional or enrolled agent, or use the Taxpayer Advocate Service for free. Many people handle routine matters like payment plans or simple disputes without legal representation. A lawyer is most useful if you are facing criminal charges or a complex civil dispute.

How long does the IRS have to collect taxes I owe?

Generally, the IRS has 10 years from the date the tax is assessed to collect it. This period can be extended in certain circumstances, such as if you file bankruptcy or live outside the country. Once the 10-year period expires, the IRS must stop collection efforts.

What is the difference between an audit and a notice?

An audit is a formal examination of your tax return by an IRS agent, who may request documents and ask detailed questions. A notice is a letter about a specific issue — it may be the start of an audit, or it may be a routine request for information. Not all notices lead to audits.