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MGA for Federally Authorized Surety Companies — Underwriting Practice

Surety bond collateral. Cash, ILOC, Treasuries.

Collateral is the asset or instrument a surety holds as security for the bond. It protects the surety from loss if the principal defaults. We accept three forms of collateral — cash, irrevocable letter of credit, and U.S. Treasury-issued securities — and we do not accept real property, tangible assets, UCC filings, or any form of assignment or lien on assets. The collateral framework, the rationale behind it, and the release mechanics are below.

Accepted forms
ThreeCash · ILOC · Treasuries
Treasury minimum
$5M bond penaltyFor Treasury securities
ILOC framework
ICC UCP 600Most recent rule set
Release mechanism
Surety's sole discretionPer indemnity agreement

What collateral actually does.

A surety bond is a three-party agreement. The principal owes a duty to the obligee; the surety stands behind that duty with real capital. If the principal defaults, the surety pays the obligee up to the bond limit and then pursues reimbursement from the principal under an indemnity agreement signed at issuance. Indemnity is the surety's first line of recourse.

Collateral is the surety's second line of recourse. It is an asset or instrument the surety holds during the bond's life that the surety can liquidate to make itself whole if the principal defaults and indemnity recovery proves difficult or impossible. The surety holds collateral; the principal retains beneficial ownership and gets it back when the bond is fully and irrevocably released.

Whether a bond requires collateral depends on three variables: the bond class (some classes are inherently collateral-typical — appellate supersedeas bonds, mechanic's lien release bonds, financial guarantee bonds — because the surety expects to pay most claims), the principal's financial position (a principal whose credit and balance sheet support the bond may receive uncollateralized terms; a principal with thin financials may not), and the bond size (the larger the bond, the more often collateral is part of the placement).

What follows is what we accept, what we don't, and how the collateral comes back when the bond is released.

Three forms.

Surety One, Inc. accepts three forms of collateral as security for bonds we underwrite. Every other form — including real property, tangible assets, UCC filings, and any form of assignment or lien on assets — is not accepted. The reasoning is liquidity: the surety must be able to convert collateral to cash quickly if a bond claim materializes, and the three accepted forms convert reliably while alternatives do not.

Form One — Cash
What it is
U.S. dollars wired to the surety and held in custody for the duration of the bond. Cash is the preferred form of collateral. In the event of a claim or bond forfeiture, the surety has immediate access to the funds without administrative correspondence, redemption costs, or delivery delays.
How it's posted
By wire transfer to the surety's collateral account. Wire instructions are issued at binding. The funds remain in the custody of the surety until the surety receives evidence — solely acceptable to the surety — that substantiates the full and irrevocable release of the surety's obligation under the bond.
Interest
Cash collateral is held in non-interest-bearing custody by default. For very large or very long-duration placements, interest-bearing custodial arrangements can be negotiated at binding.
When it's preferred
For all bonds where the principal has cash available. Cash is the surety's preferred form. Where the principal has the cash, the underwriting decision is fastest, the binding terms are most favorable, and the release process is most direct.
Form Two — Irrevocable Letter of Credit
What it is
An iLOC is an instrument issued by a bank that guarantees payment of a debt or liability of an individual or business entity if the beneficiary demands the same. It cannot be canceled or modified except by absolute agreement of the issuing bank and the surety.
Issuing bank requirements
The surety bond underwriter reviews the rating of the financial institution the principal proposes. Investment-grade U.S. banks with strong long-term ratings (typically the surety's standard table of acceptable banks) are routinely accepted. International and lower-rated banks may not be acceptable.
Form requirements
The iLOC must follow the most recent rule publication of the International Chamber of Commerce — currently ICC UCP 600. The original iLOC must be delivered to the surety before the bond is executed and released. Sample iLOC language is available from our underwriting desk on request.
When it's used
When the principal prefers to keep cash deployed in its business operations and pay a modest bank LOC fee in exchange for posting the bond. iLOC is the second-most-common collateral form in our practice after cash.
Form Three — U.S. Treasury Securities
What it is
U.S. Treasury-issued securities — Treasury bills, notes, or bonds — held in custody as collateral. The Treasury market is the deepest and most liquid government securities market in the world; redemption converts to cash through normal market mechanics.
Eligibility threshold
Treasury collateral is available only for bond placements with penalties in excess of $5,000,000. Below that threshold, the administrative cost of CUSIP custody outweighs the benefit, and cash or ILOC are required instead.
Custody mechanics
The securities must be CUSIP'd to the custody of Surety One, Inc. or its surety partner, or held in a custodial account established jointly between the bond principal and the surety or the surety's managing general agency. Custody arrangements are documented at binding.
When it's used
For very large appellate bonds, large mechanic's lien release bonds securing high-value liens, and large financial guarantee placements. Treasury collateral allows the principal to retain ownership of the underlying securities and continue earning Treasury yield while the bond is in force.

The forms we decline.

Several forms of asset are commonly proposed by principals and just as commonly declined by sureties. The reason in each case is liquidity — these forms either cannot be converted to cash on demand, or the conversion process is so cumbersome that the collateral fails its function as a second line of recourse.

Real property. A mortgage or deed of trust on real estate has the right characteristics on paper — substantial value, recorded interest, foreclosable on default — but in practice real estate collateral fails the liquidity test. A surety facing a claim cannot wait six to eighteen months for a foreclosure process to liquidate the property. Real property is therefore not accepted as collateral on any bond we underwrite.

Tangible personal property. Equipment, inventory, vehicles, and other tangible assets present the same liquidity problem as real property. They also depreciate in unpredictable ways and require active management to maintain value. Not accepted.

UCC filings. A perfected security interest in business assets — UCC-1 filing on accounts receivable, inventory, or general intangibles — is not accepted. The same liquidity reasoning applies, plus the priority and notice complications of UCC perfection in default scenarios.

Assignments and liens on assets. Any form of assignment or lien on assets — wage garnishment assignments, judgment liens, equity interests in private companies, partnership interest pledges — is not accepted. These instruments are illiquid by their nature.

The accepted/not-accepted line is bright. If the proposed collateral cannot be converted to cash within days of a default event, it is not collateral for a surety bond. The whole point of the collateral is the surety's certainty of recovery. Anything that defeats that certainty defeats the purpose.

Sizing the collateral.

The amount of collateral required depends on three factors: the nature of the obligation, the principal's financial position, and the bond class loss history.

For most collateral-typical bond classes — appellate supersedeas, mechanic's lien release, financial guarantee — collateral is typically required at 100% of the bond penalty. The reasoning is direct: these classes have meaningful loss rates and the surety expects to pay most bonds that get challenged, so full collateral is the conservative underwriting baseline.

For bond classes where collateral is occasionally rather than typically required — plaintiff bonds with strong but not balance-sheet-perfect principals, fiduciary bonds for family-member fiduciaries in our non-standard program — collateral may be required at partial penalty: 25%, 50%, or 75% of the bond amount, depending on the case-specific underwriting analysis.

For principals whose credit and balance sheet meet underwriting thresholds, uncollateralized placement is the standard. Most court bonds in our practice — across all four categories — are uncollateralized. Collateral becomes part of the placement only where the bond class or the principal's profile requires it.

The trade-off is straightforward. Uncollateralized placement requires the principal to qualify on financial strength alone. Collateralized placement — with cash, iLOC, or Treasury securities — opens placement to a wider range of principals, at the cost of tying up the collateral for the life of the bond.

How collateral comes back.

Collateral is released back to the principal only after the surety has received evidence — solely acceptable to the surety — that the surety has been fully and irrevocably released from its obligation under the bond. The release standard is unilaterally the surety's decision, governed by the bond agreement and the indemnity agreement signed at issuance.

The release standard varies by bond class. Each class has its own release mechanics:

Release Mechanics by Bond Class
Judicial bonds
Released by court orders issued by the court holding jurisdiction over the underlying controversy. The order must explicitly release the surety from its obligation under the bond — a generic case-disposition order is not sufficient.
Mechanic's lien release bonds
Released by the lien claimant's absolute release of the surety, accompanied by a notice of satisfaction of the lien debt. If the lien claimant has initiated litigation in prosecution of the lien, a court order releasing the surety is required. Note: The expiration of the statutory window within which a lien claimant must initiate collection or prosecution of the lien is not, on its own, acceptable evidence that the surety is released. Likewise, a lien claimant's filing of a "release of mechanic's lien claims" is not acceptable — because the lien was bonded off the lien by our bond, there is no lien remaining to release. Return of the original bond is the required mechanic under that scenario.
Contract surety bonds
Released by the release letter issued by the obligee (typically the project owner) covering all bond obligations — performance, labor and material payment, maintenance, warranty, and any other covered obligation.
Commercial surety bonds
Released by issuance of a cancellation notice by the surety, expiration of the bond's tail (claim period), and return of the original bond.

Once the release standard for the class is satisfied, the surety initiates the collateral return. Cash collateral is wired back to the principal's account on file. iLOC collateral is returned to the issuing bank with the surety's release authorization. Treasury collateral is reCUSIP'd back to the principal or to a successor custodian per the principal's instructions.

Collateral questions.

Does every bond require collateral?
No. Most court bonds in our practice are uncollateralized. Collateral becomes part of the placement when the bond class is collateral-typical (supersedeas, mechanic's lien release, financial guarantee) or when the principal's financial profile requires it. Plaintiff, defendant, and fiduciary bonds are routinely written without collateral for principals who qualify on financial strength.
Why don't you accept real estate?
Liquidity. Real estate cannot be converted to cash on the timeline a surety claim demands. Foreclosure processes take six to eighteen months in most jurisdictions, and even after foreclosure the property must be marketed and sold. By contrast, cash settles same-day, ILOC drafts settle in days, and U.S. Treasury securities can be liquidated in normal market hours. The same liquidity reasoning applies to tangible personal property, UCC filings, and asset assignments.
Can I use a letter of credit from any bank?
Any bank that meets the surety's rating threshold. The standard requirement is an investment-grade U.S. bank with strong long-term ratings. The surety reviews the proposed issuing bank at the time of placement. Most large U.S. national and regional banks are acceptable; smaller community banks, foreign banks, and lower-rated institutions may not be.
What's the minimum bond size for Treasury collateral?
Bond penalties in excess of $5,000,000. Below that threshold, the administrative cost of CUSIP custody outweighs the benefit, and we require cash or ILOC instead.
Does the principal earn yield on cash collateral?
By default, cash collateral is held non-interest-bearing. For very large or very long-duration placements, interest-bearing custodial arrangements can be negotiated at binding. Treasury-securities collateral lets the principal retain Treasury yield directly while the securities are in custody.
How long does it take to get collateral back after the bond closes?
For cash collateral, typically 5 to 10 business days after receipt of release evidence. For iLOC, 10 to 20 business days because the issuing bank's release process is involved. For Treasury securities, similar to cash. The bottleneck is rarely on the surety's side — release evidence (court order, obligee release letter, return of original bond) is what typically takes longer than the wire mechanics.
Who decides when collateral can be released?
The surety, in its sole discretion. The bond agreement and indemnity agreement signed at binding provide that the surety unilaterally decides what constitutes acceptable evidence of exoneration. The surety acts in good faith and reasonably — there is no incentive to hold collateral longer than necessary — but the legal decision is the surety's, not the principal's or any third party's.
What if I can't post any of the three accepted forms?
If your bond placement requires collateral and you cannot post in any of the three accepted forms, two paths remain. First, our non-standard underwriting program may accept the placement at a higher premium without collateral or with reduced collateral. Second, premium financing arrangements through our finance partners may make the cash collateral economically workable even where it isn't sitting in your operating account today. Call our underwriting desk to explore both options.

Further reading on the Surety One blog

↗ suretyone.com/blog

Need a bond that requires collateral?

Send the controlling document — judgment, recorded lien, financial guarantee terms. Our underwriters open the file, review your collateral options, and quote the placement the same business day.