Senate Approves TRIA Reauthorization to Secure Insurance Against Terrorism Risks

Legislation to renew the federal terrorism insurance backstop has advanced to the full Senate, moving Congress closer to providing long-term certainty for insurers, businesses, lenders, and major development projects.

The Senate Banking Committee voted 24-0 on September 17 to advance S. 4395, the Terrorism Risk Insurance Program Reauthorization Act of 2026. The unanimous vote reflects broad bipartisan agreement that the private insurance market still needs a federal mechanism for absorbing losses from an exceptionally large terrorist attack.

The current program is scheduled to expire on December 31, 2027. Although that date may appear distant, insurers are already issuing multiyear policies, businesses are arranging financing, and developers are planning projects that could extend beyond the present authorization.

The House passed its own reauthorization legislation by a 373-15 vote in June. The House measure would extend the program through 2034, while the Senate committee measure has been described as extending it through 2037. Those differences, along with possible changes to program thresholds, would need to be resolved before final legislation reaches the president.

Why TRIA Still Matters to the Commercial Insurance Market

Congress created the Terrorism Risk Insurance Act in 2002 after the September 11 attacks produced enormous insured losses and caused terrorism coverage to become scarce or prohibitively expensive. Insurers and reinsurers had limited historical information for pricing the risk, while a coordinated attack could generate concentrated losses across property, liability, business interruption, and workers’ compensation portfolios at the same time.

Treasury estimates that the September 11 attacks generated approximately $59 billion in insurance losses when measured in 2024 dollars. Roughly two-thirds of those losses were reimbursed by reinsurers, but the event exposed how quickly private capacity could retreat when the potential severity of a peril was difficult to model or diversify.

TRIA responded by creating a public-private loss-sharing system. Participating commercial property and casualty insurers must make terrorism coverage available on terms that do not differ materially from coverage offered for other perils. Policyholders generally are not required by TRIA to purchase the coverage, although lenders, contracts, or state requirements may influence that decision.

“Insurance contracts, construction projects, commercial loans, and major investments are planned years in advance.”

How the Federal Backstop Actually Works

The existence of TRIA does not mean the federal government automatically pays terrorism claims. Several conditions must be satisfied before federal compensation becomes available, and insurers retain substantial financial responsibility.

An event must first be certified as an act of terrorism by the Treasury secretary in consultation with the attorney general and the secretary of homeland security. The event must meet statutory requirements involving violence, danger to life or property, location, and an intent to coerce civilians or influence government conduct.

Under the current framework, an event cannot be certified if aggregate property and casualty insurance losses are below $5 million. Even after certification, federal payments are unavailable unless total industry losses from certified events exceed the $200 million program trigger.

Each participating insurer must then absorb a deductible equal to 20 percent of its prior-year direct earned premium in TRIA-eligible lines. Above that deductible, the federal government generally pays 80 percent of eligible losses and the insurer pays 20 percent, subject to a combined annual program cap of $100 billion.

Treasury may later recover certain federal payments through surcharges imposed on commercial policyholders. This recoupment structure is an important distinction for clients who assume TRIA functions as an unrestricted taxpayer-funded guarantee.

The program has never been triggered. Its value has instead been demonstrated through the capacity and pricing stability it supports before a catastrophic event occurs.

The Practical Impact for Agents and Agencies

For commercial insurance professionals, reauthorization is not merely a federal policy issue. It can affect renewal language, client disclosures, lender compliance, property transactions, and the availability of limits in areas with concentrated exposure.

When earlier TRIA expiration dates approached without congressional action, some policies included provisions that would remove terrorism coverage if the federal program ended during the policy period. These provisions, sometimes described as springing exclusions, can create coverage uncertainty for clients whose insurance contracts extend beyond the program’s expiration date.

Agents and agencies should pay particular attention to clients with high-value property, dense employee concentrations, public gathering spaces, critical infrastructure, or contractual requirements for terrorism coverage. The issue can also surface during loan renewals, construction financing, property acquisitions, and lease negotiations.

Questions Worth Raising During Renewal Reviews

• Does the policy include certified terrorism coverage, and did the client accept the offer?
• Would coverage change if TRIA expired during the policy term?
• Do loan documents or contracts require terrorism limits or specific terms?
• Are nuclear, biological, chemical, or radiological events excluded?
• Could cyber-related losses qualify only under separate coverage or endorsements?

Documenting these conversations can help agencies demonstrate that clients received a clear explanation of the offer, the relevant exclusions, and the consequences of accepting or declining coverage.

Availability Is Strong, but Take-Up Deserves Attention

Treasury’s 2026 review concluded that terrorism insurance remains generally available and affordable and that the program has been effective in supporting its intended market. Terrorism coverage is included in a substantial majority of eligible policies, and its cost has remained a relatively low and consistent portion of overall commercial property and casualty premiums.

From 2003 through 2025, insurers other than captives earned an estimated $64.1 billion in terrorism risk premiums. That represented between 1 and 2 percent of total premiums earned in TRIA-eligible insurance lines during the same period.

The findings were not entirely static. Treasury identified some decline in terrorism coverage take-up and reductions in extended limits. Those changes may reflect broader property and reinsurance market pressures, policyholder purchasing decisions, or a reduced perception of terrorism risk after years without a certified event.

For agencies, that creates an opportunity to move the discussion beyond a simple acceptance or rejection form. Clients may need help evaluating geographic concentration, employee accumulation, business interruption dependencies, contractual obligations, and the potential for one event to affect multiple insured locations.

“Extending TRIA is critical because terrorism poses uniquely unpredictable risk.”

Workers’ Compensation Creates a Distinct Exposure

Workers’ compensation remains one of the clearest examples of why insurers value the federal backstop. State laws generally prevent workers’ compensation carriers from excluding terrorism, imposing aggregate policy limits, or avoiding the accumulation created when many employees work at one location.

A large attack on an office tower, manufacturing facility, transportation hub, stadium, or convention venue could therefore generate severe workers’ compensation losses alongside property damage and business interruption claims.

Carriers must continue evaluating employee concentrations and correlated exposures even when terrorism coverage appears to represent a small portion of written premium. Reinsurance can reduce portions of that risk, but private terrorism reinsurance remains less extensive than reinsurance purchased for many natural catastrophe exposures.

Cyber and Emerging Threats Complicate the Coverage Picture

The nature of terrorism risk has evolved considerably since 2002. Physical attacks remain a central concern, but insurers must also consider cyber-enabled terrorism, attacks against critical infrastructure, political violence, and events involving nuclear, biological, chemical, or radiological materials.

TRIA can respond to cyber losses when the underlying event is formally certified and the affected insurance falls within an eligible line. That does not mean every large cyberattack would qualify. Attribution, motivation, policy exclusions, war language, and the federal certification process could all influence the outcome.

Treasury modeling has demonstrated that a sufficiently large certified cyberattack could produce federal loss-sharing payments, particularly when an insurer has substantial aggregated cyber limits. At the same time, large participating insurers may have sizable program deductibles that must be satisfied before federal compensation begins.

This makes policy wording and portfolio aggregation increasingly important. Carriers need a clear view of how cyber, property, business interruption, contingent business interruption, and other coverages might respond to a single coordinated event. Agents should avoid presenting TRIA as a universal solution for every form of politically motivated or state-linked cyber loss.

What the Industry Should Watch Next

The next major step is consideration by the full Senate. If the Senate approves legislation that differs from the House bill, lawmakers will need to reconcile the length of the extension and any changes to the program’s financial thresholds.

The House measure includes a future increase in the minimum loss amount required for an event to be certified, raising it from $5 million to $10 million in 2029. Any difference between the House and Senate approaches could affect smaller certified events even though those losses would remain far below the separate $200 million industry trigger for federal payments.

For carriers, early reauthorization would support capacity planning, catastrophe modeling, reinsurance purchasing, and management of geographic accumulations. For agencies, it would reduce uncertainty surrounding multiyear policies and give clients greater confidence when arranging loans, leases, construction projects, and other long-term commitments.

The committee’s unanimous vote suggests strong momentum, but the process is not complete. Until final legislation is enacted, insurance professionals should continue reviewing policy language that depends on the program’s renewal and explaining to clients that terrorism coverage, federal certification, and federal reimbursement are related but separate issues.

A long-term extension would preserve a framework that has helped keep terrorism insurance available for more than two decades. More importantly, it would give the market time to focus on the changing nature of the exposure rather than another approaching expiration deadline.