Seriously Delinquent Tax Debt? UNDERSTANDING IRS LETTER 6305

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Key Takeaways

The IRS tax laws provide that “a seriously delinquent tax debt” is a specific category of tax debt which, when “certified” by the IRS to the State Department, will typically prevent the tax debtor from being approved for a new passport or have an existing passport renewed.
If you owe the IRS more than $66,000 (as of 2026, adjusted annually for inflation), your passport can be revoked, denied, or restricted.
This is enforced under the FAST Act and IRS certification to the U.S. State Department.
You may lose your passport without warning unless proactive steps are taken.
Certain resolutions, like installment agreements or Offers in Compromise, can prevent enforcement.
Seek immediate help from a tax resolution expert before your travel rights are affected.

If you have unresolved tax debt, the IRS can revoke, block, or deny your U.S. passport even if you already hold one. Many Americans only discover this after a trip is booked or during travel, leading to serious disruption. If you live abroad or rely on international travel for business or family, this can become catastrophic. Here’s everything you need to know about how this law works in 2026, who is affected, and how to protect yourself legally.

How Did We Get Here? The FAST Act

In December 2015, Congress passed the Fixing America’s Surface Transportation (FAST) Act, a law primarily intended to fund U.S. infrastructure. But tucked inside it was a revenue-generating measure: the Internal Revenue Service was given the authority to work with the U.S. Department of State to restrict the passports of “seriously delinquent taxpayers.” Since its implementation in January 2018, this provision has become a powerful collection tool. The IRS now certifies delinquent taxpayers to the State Department, triggering enforcement actions against their passports. As of 2026, a taxpayer is considered “seriously delinquent” if they owe approximately $65,000+ (adjusted annually for inflation) in unpaid federal tax debt, including penalties and interest. This isn’t theoretical. By 2026, hundreds of thousands of taxpayers have been certified under this program since its launch, with passport restrictions actively enforced each year. Even if you haven’t received a recent notice warning you about passport issues, you could still be at risk.

What Is a “Seriously Delinquent Taxpayer”?

To qualify as a seriously delinquent taxpayer, the IRS must determine that:

You owe $64,000 or more in unpaid federal taxes (this amount is adjusted annually for inflation and may be slightly higher in 2026), including penalties and interest; and
The IRS has either filed a Notice of Federal Tax Lien and exhausted all collection appeal rights, or has issued a levy.

Once these conditions are met, the IRS will certify you to the State Department without your prior approval or contest opportunity. Simultaneously, you’ll receive IRS Notice CP508C, alerting you of the passport restriction.

What Happens After Certification?

Once the IRS certifies your tax debt:

The U.S. State Department will block any new passport application or deny renewal requests.
If you already have a valid passport, the State Department may revoke it or place limitations, such as invalidating travel outside the U.S.
If you’re overseas, you may only be issued a limited-validity passport to return to the U.S.

You won’t receive new notices about this from the IRS. That means if the notices you got years ago didn’t mention the passport issue (as many didn’t), you might have no idea your passport is in danger.

How to Avoid IRS Passport Certification

If you act before certification, you can keep your passport secure. According to the IRS, the following actions will prevent certification:

Pay your tax debt in full.
Enter into an IRS-approved Installment Agreement and stay current.
Submit and receive approval for an Offer in Compromise.
Settle the debt via a Department of Justice agreement.
Request a Collection Due Process (CDP) appeal for a recent levy notice.
Apply for Innocent Spouse Relief, and if collection is suspended, you’re protected.

Each of these must be active before certification. Once you’re certified, resolving it becomes more complicated.

Post-Certification Grace Period: The 90-Day Rule

If you apply for or renew a passport, and the State Department finds you certified, they’ll hold your application for 90 days. During that period, you can resolve the tax debt through one of the options above. If the IRS reverses the certification within that time, the State Department will resume processing your application. The IRS is required to notify the State Department within 30 days of reversing certification. So if you’re close to traveling, time is critical.

Additional Exemptions from Passport Restrictions

Even if you meet the tax debt threshold, certain situations automatically exclude you from passport enforcement:

You’re deceased
You’re in bankruptcy
You’re an IRS-confirmed victim of identity theft
Your account is marked “currently not collectible” due to hardship
You’re located in a federally declared disaster area
You have a pending Installment Agreement request
You have a pending Offer in Compromise
The IRS has accepted an adjustment that will resolve your balance

All of these must be in place before the IRS certification is issued. Yes, the IRS even made a specific exemption for deceased taxpayers, which is both accurate and a bit humorous.

Why Most Taxpayers Are Caught Off Guard

The biggest issue with passport revocation is the lack of notice. Many taxpayers who qualify as seriously delinquent have already received prior collection notices, but none of them mentioned passport denial or revocation. Why? Because the IRS doesn’t issue new warnings under the FAST Act. Certification can happen suddenly and silently. If you’re close to the $66,000 threshold or have an unresolved lien, your best move is to act now, even if you’ve received no recent IRS communication.

What You Can Do Right Now

If your passport is important for business, personal travel, immigration, or expatriation, ignoring your tax issue is no longer an option. The IRS now has more than 50 million active collection cases and is aggressively enforcing FAST Act powers. Time is absolutely of the essence. Even if your case is complex or includes old debt, a skilled tax resolution firm can stop enforcement, negotiate with the IRS, and protect your legal rights. Fortress Tax Relief has years of experience in preventing and reversing IRS certifications under the FAST Act. We can explore every option from Installment Agreements and Offers in Compromise to hardship exemptions and procedural appeals. We recommend scheduling a Free Consultation with our experts as soon as possible.

Related Resource

Learn how tax debt can also lead to criminal prosecution under certain conditions and what defenses are available.

Frequently Asked Questions

Q1: What’s the current IRS debt threshold for passport denial in 2026? As of 2026, the threshold is approximately $66,000, which includes back taxes, penalties, and interest. This figure is adjusted annually for inflation. Q2: Can the IRS take my passport if I’m on a payment plan? No. If you have an active and approved Installment Agreement and are making timely payments, the IRS will not certify you to the State Department. Q3: I live abroad and just found out about my tax debt. Can I get a new passport? If your passport has been revoked while overseas, the State Department may issue a temporary passport for direct return to the U.S. You’ll need to resolve your tax status before getting full travel privileges reinstated. Q4: What happens after the IRS reverses a certification? If you resolve the issue, the IRS must reverse the certification within 30 days and will notify the State Department. Once lifted, you can apply or travel freely again. Q5: Can I fight the passport certification in court? Yes. You can file suit in U.S. Tax Court or District Court to contest an erroneous certification or if the IRS fails to reverse it timely after you’ve resolved the debt.

Ready to Protect Your Passport?

If you owe back taxes and your passport may be at risk, don’t wait for a surprise at the airport. Fortress Tax Relief can step in, negotiate with the IRS on your behalf, and stop the certification process before it derails your life. Schedule your Free Consultation today Let’s take action before it’s too late.

Lea Caputo
The attorneys and staff at Fortress Tax Relief were professional, informative and efficient. They helped me significantly reduce my federal tax debt and gave me hope for my financial future. I chose Fortress because of their excellent reviews, knowledge and patience. Getting professional assistance was the best decision I’ve made.
Kelly Deshler
I can’t say enough good things about Fortress Tax Relief (David Feldman and Team)! From start to finish, their team was professional, patient, and incredibly knowledgeable. It took me a while to gather all my documents, but they never rushed me and were always supportive throughout the process. I had a significant tax debt—even though I was making my monthly payments, it felt like I was never going to get out from under it. To make matters worse, I added new taxes from the next year. I was completely overwhelmed. Fortriss stepped in and took the stress off my shoulders, handling negotiations over several months to get me a plan that was actually affordable and manageable. Their expertise and dedication truly made a difference. If you're feeling stuck with tax debt, I highly recommend Fortress Tax Relief—they helped me find a way forward when I couldn’t see one myself!
ladonna plascencia
Peter and Karlin at Fortress went above and beyond to help my dad resolve his IRS and CA DOR debts after he fell behind due to major medical issues. Their expertise and experience were evident, throughout the process—they knew exactly what to do and how to handle everything with confidence and efficiency. Beyond that they showed genuine care, respect, and kindness, acknowledging not just my dad’s financial struggles but his health challenges as well. Their professionalism and compassion during my dad’s final years made a stressful situation easier and we are incredibly grateful. Highly recommend Fortress!

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About the Author

Stephen K. Galgoczy, Esq.

Stephen K. Galgoczy, Esq. Steve is the founder and President of Fortress Financial Services. Steve has worked in the tax resolution industry, and has been representing taxpayers in collections with both state and federal governments, since 1999. Steve holds a Bachelor's Degree in Business Administration from the University of Washington (focus on Finance and Marketing) and attended Seattle University School of Law on an academic scholarship. He graduated cum laude and in the top 25% of his law school class. He holds a license in good standing with the Supreme Court of the State of Colorado and is admitted to practice in United States Tax Court. Steve Galgoczy has never been disciplined by the Colorado Bar Association. Before Fortress, Steve spent four years as the top Associate with two of the largest tax resolution firms in the United States. During his career as a tax resolution professional, Steve has personally handled over 1500 cases involving delinquent taxes and has had significant involvement in well over 2500 such cases. Steve has extensive experience handling some of the most difficult tax collection cases found in the world of tax resolution and is considered by many to be among the best tax resolution professionals in the country. Steve is also considered by many to be among the best in the nation when it comes to training other tax resolution professionals. He has trained a number of professionals who are currently employed by competing firms, including at least one professional who is an owner of a competing firm. Steve has also extensively trained every single Fortress attorney, which typically means more than 500 hours of one on one time with each attorney--and the vast majority of that time is spent working real life cases. While Steve’s primary focus is quality assurance for all Fortress clients, he is available to assist other Fortress attorneys when additional firepower is needed.