Introduction to Treasury Circular 570

In the world of federal contracting, the government requires assurance that the surety companies providing bonds are financially stable and capable of meeting their obligations. This oversight is managed through Treasury Circular 570, officially titled the 'Companies Holding Certificates of Authority as Acceptable Sureties on Federal Bonds and as Acceptable Reinsuring Companies.' This document is the definitive list of surety companies authorized by the U.S. Department of the Treasury to write bonds for federal projects.

For candidates preparing for the complete Surety exam guide, understanding Circular 570 is vital. It governs how much risk a single company can take on for a federal project and sets the standards for corporate solvency in the eyes of the federal government. Without being listed on this circular, a surety company cannot provide the bid, performance, or payment bonds required for major federal infrastructure and service contracts.

Key Pillars of Federal Surety Oversight

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10% of Surplus
Underwriting Limit
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U.S. Treasury
Authority
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Miller Act
Compliance
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Periodic
Update Frequency

The Underwriting Limitation Rule

One of the most critical aspects of Treasury Circular 570 is the underwriting limitation. The Treasury Department establishes a maximum amount for which a company can be obligated on any single federal bond. This limit is generally set at 10% of the surety company's paid-up capital and surplus.

This rule is designed to prevent a single massive project failure from bankrupting a surety provider. If a federal project requires a bond that exceeds this 10% threshold, the surety cannot write the bond alone. They must find ways to spread the risk, typically through reinsurance or co-surety arrangements. When you review practice Surety questions, you will often find scenarios where you must determine if a bond amount is permissible based on a company's reported surplus.

  • Capital and Surplus: The financial cushion a company keeps to pay unexpected claims.
  • Single Risk: The total exposure on one specific bond or project.
  • Net Limit: The amount the company is allowed to retain after accounting for approved reinsurance.

Handling Bonds Over the Underwriting Limit

FeatureMethodHow it Works
ReinsuranceThe primary surety 'cedes' a portion of the risk to another company listed on Circular 570.The reinsurer assumes responsibility for the excess amount above the 10% limit.
Co-SuretyTwo or more sureties sign the bond together, sharing the obligation.Each company is responsible for a specific limit, and the total of their limits must cover the bond amount.
CollateralThe principal provides liquid assets (like a Letter of Credit) to cover the excess.This reduces the 'net risk' to the surety, keeping them within the 10% limitation.

The Miller Act Connection

Treasury Circular 570 works in tandem with the Miller Act. The Miller Act requires prime contractors on federal construction projects exceeding a specific dollar threshold to provide both performance and payment bonds. Because these bonds are mandatory for federal work, the government must ensure the companies providing them are reliable.

Contracting officers are required to verify that the surety appearing on a bond is listed in Circular 570 and that the bond amount does not exceed the company’s listed underwriting limitation. If a surety is removed from the circular due to financial instability or failure to pay claims, they are no longer permitted to write new federal business until they are reinstated.

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Exam Tip: Surplus Calculations

For exam purposes, remember that the 10% limitation is based on the surplus to policyholders as reported in the company's most recent financial statement to the Treasury. If a question asks how a $50 million bond can be written by a company with a $40 million limit, look for answers involving reinsurance with another T-listed company.

Frequently Asked Questions

Generally, no. Federal regulations require that sureties for federal obligations be listed on the Treasury Department's Circular 570. Non-listed companies may act as reinsurers only under very specific and limited conditions defined by the Treasury.
The bond may be rejected by the federal contracting officer. To make the bond valid, the surety must provide evidence of reinsurance from another authorized company or provide acceptable collateral to cover the excess amount.
Directly, no. Circular 570 is a federal requirement. However, many states, municipalities, and private owners use the Treasury list as a 'gold standard' and require their sureties to be T-listed as a measure of financial strength.
The Treasury Department updates the circular periodically to reflect changes in companies' financial standing, new additions to the list, or removals of companies that no longer meet the criteria.