What is tax debt, and how do you pay it off?

When your taxes go unpaid past the deadline, you have tax debt owed to the IRS. You may also owe penalties and interest. Penalties and interest typically grow until you pay the balance, so acting sooner could lower your total cost.

If you owe the IRS, you might have several options, from short- and long-term payment plans to an offer in compromise. We'll explain what tax debt is, how to find your balance, and how you might pay or settle it.

This article is for informational purposes only and does not constitute legal, tax, or accounting advice. Achieve is not a tax relief or tax resolution company and does not provide tax services. Talk with a tax professional about your specific situation.

What is tax debt (and what are back taxes)?

Tax debt happens when you don't pay your taxes in full by the due date. Back taxes are taxes from a previous year that you didn't pay on time. People often use the two terms interchangeably.

A tax liability differs from a tax debt. Your tax liability is the total tax you owe for the fiscal year. It becomes tax debt when you still owe part or all of it after the due date for that year, usually around the middle of April the following year. From that point, the IRS charges interest that compounds daily from the original due date. It might also add penalties until you pay in full.

Possible reasons for owing tax debt include:

• A unfiled return for one or more years

• A change in income, or withholding or estimated payments that fell short

• Not enough money to pay at tax time

• Penalties and interest added to an existing balance

When you don't pay a balance, the IRS sends a bill. That bill starts its collection process. Unpaid federal tax could also lead to a tax lien against your assets like real estate or a vehicle.

Tax debt owed to the IRS is generally federal tax debt. Each state's tax agency sets its own rules and payment options for state tax debt.

How to check if you owe the IRS 

Once you know your exact balance, you could decide how to pay your tax debt. If you're not sure whether you owe back taxes, the IRS offers three ways to find out.

1. Your IRS online account 

The IRS individual online account could be a quick way to check. After you sign in, you can find your balance for each tax year. The account also lists your payment history, digital IRS notices, and tax transcripts. You could make a payment or apply for a payment plan in the same place. New users typically need a photo ID to verify their identity.

2. IRS notices and letters 

A bill in the mail is often the first sign that you owe. The notice should list the amount due and a response date. The IRS publishes a guide to understanding its notices and letters. Try to respond by the date on the notice, even if you can’t pay in full.

The IRS says it won't contact you by text message or social media to ask for personal or financial information. It also won't initiate an email or phone call—it only contacts you that way if you've already reached out. Treat those messages with caution.

3. Tax transcripts

A tax account transcript summarizes your account activity for one tax year. You could get one online through the IRS Get Transcript service. An account transcript might not show your latest penalties, interest, or pending changes.

Consequences of unpaid taxes

Unpaid tax debt can have serious repercussions, as the IRS has a variety of tools to collect it.

Penalty fees

The IRS may charge two separate penalties:

• Failure to file: This penalty can be 5% of the unpaid tax for each month or part of a month a return is late, up to 25%

• Failure to pay: This penalty can be 0.5% of the unpaid tax for each month or partial month the tax remains unpaid, up to 25%

Both can apply at the same time. In that case, the IRS applies a cap, and the two penalties together could reach 47.5% of the tax owed. If you file more than 60 days late, the minimum failure-to-file penalty is $525 (for returns due in 2026) or 100% of the tax owed, whichever is smaller.

Because the failure-to-file penalty is larger, filing your tax return on time could save you money even if you can't pay at the time you file. Taxes are typically due by April 15. If you can’t complete your return by April 15, you can request an automatic six-month extension. An extension gives you more time to file, not more time to pay. 

Interest charges

The IRS charges interest on unpaid tax from the original due date until you pay in full. It sets the rate each quarter. As of the quarter starting Oct. 1, 2026, the rate for individuals is 7% a year, compounded daily. That means new interest can be added every day you don't pay.

IRS collection actions

If tax debt stays unpaid, the IRS might take these steps:

• Federal tax lien. A lien is a legal claim against your property. It arises automatically when the IRS sends its first bill and you don't pay in full. The IRS might also file a public Notice of Federal Tax Lien. Tax liens no longer appear on major credit reports.

• Levy. A levy goes further than a lien. With a levy, the IRS can take money or property, such as funds in a bank account or part of your wages.

• Refund offsets. The IRS might apply future federal or state tax refunds to your balance.

• A higher penalty rate. The failure-to-pay rate rises to 1% a month starting 10 days after the IRS issues a final notice of intent to levy.

• Passport restrictions. For 2026, the IRS might certify tax debt over $66,000, including penalties and interest, to the State Department. The State Department could then deny or revoke your passport. The IRS adjusts this threshold for inflation each year.

The IRS might also pursue criminal charges in cases of willful tax evasion.

How to pay or settle tax debt

Your options for how to pay tax debt depend on how much you owe and how fast you can pay.

Catch up on filing

Most IRS payment and relief options require you to file all required returns. If you missed any years, filing those returns is a smart first step. 

For the current year, file on time or request an extension with Form 4868. An extension gives you six more months to file. It doesn’t give you more time to pay.

The IRS Volunteer Income Tax Assistance (VITA) and Tax Counseling for the Elderly (TCE) programs offer free basic tax preparation to qualifying taxpayers. IRS partner organizations run these sites, and IRS-certified volunteers staff them.

With IRS Direct Pay, you could pay from a bank account at no cost. IRS-approved processors also accept debit and credit cards for a fee. 

Pay what you can 

The IRS bases penalties on the unpaid amount. Even if you can't pay all of your tax debt right now, consider a partial payment. This could lower how much you owe and reduce the penalty fees and interest that accrue.

Short-term payment plan 

A short-term plan could give you up to 180 days to pay. You can apply online if you owe less than $100,000 in combined tax, penalties, and interest. The plan has no setup fee. Penalties and interest continue until you pay all of your outstanding tax debt in full.

Long-term payment plan 

If you need longer than a short-term payment plan would provide, you might be eligible for a longer-term plan. A long-term payment plan could allow you to pay off your debt tax over time through automatic withdrawals or non-direct debit. There may be a $29 or $69 setup fee, depending on which option you choose.

Offer in compromise

An offer in compromise is an IRS program that allows taxpayers to settle their tax debt for less than the full amount owed. You could apply for an offer in compromise through your IRS account.

The IRS has strict rules for accepting an offer in compromise. It may agree to accept a smaller tax debt payoff when:

• There's a legal dispute as to whether the debt is actually owed in the amount stated.

• Paying the tax debt in full would cause an undue hardship.

• The IRS doesn't think it will be able to collect the tax debt in full.

Most taxpayers who request an offer in compromise do not get it accepted. In 2025, the IRS only accepted 14% of the 38,797 offers in compromise it received. 

If you submit an offer in compromise that's accepted, payment options typically include a lump sum of 20% of the accepted offer with the remaining balance in five payments or less, or an initial payment plus periodic payments over time. There's a $205 application fee and a first payment due for an offer in compromise unless low-income qualifications are met.

Other debt and your IRS payment plan

You may be dealing with other types of debt in addition to tax debt. If you're also struggling to keep up with credit cards or personal loans, consider ways to resolve your unsecured debts. This could free up room in your budget for tax debt and other necessary payments.