Aon vs 
CNA: How Do They Compare for Surety Bonds?
Aon: construction surety bonds and describes them as financial security intended to guarantee contractor performance and payment to specified subcontractors, laborers and material suppliers. Actual bond obligations depend on the bond form and its terms. CNA: surety markets commercial and contract surety bonds in all 50 states, Canada and Puerto Rico. 3,7
What Is Aon?
Aon’s U.S. Commercial Risk terms describe brokerage for certain insurance programs, while its Middle Market page describes a dedicated practice for mid-sized organizations across North America. The public materials reviewed do not identify the licensed producer or insurer for a particular placement. Ask which entity will produce each line and which insurer will issue the policy; request jurisdiction details for the proposed placement and ask how compensation and claim notice work for your account. 1,2
CNA Small Business Insurance: Products, Agents and Service
CNA directs small-business buyers to independent agents and describes CNA Connect as a businessowners policy for more than 600 small-business classes. Issuer and availability vary by policy and state, so confirm both in a quote. 4,5,6
What Are Surety Bonds?
A surety bond guarantees that your business meets a specific obligation to a customer, contracting party or government agency. If a contract, license or permit requires one, get its exact form and amount; a bond is not insurance for your own losses. 8,9,10,11,12
Key Differences in Surety Bonds
Bond forms for the stated obligation
Aon describes its global construction practice designs and places risk solutions and uses broking experience and a global network across construction insurance lines. For construction surety, this is evidence of Aon’s brokered market offering; the page does not identify the insurer for a buyer’s placement. CNA describes surety markets commercial and contract surety bonds in all 50 states, Canada and Puerto Rico. A bond protects the obligee under the named obligation, so compare the required form and conditions against the contract or license before choosing a route. 3 7
Applicant profile and service model
Aon identifies its global construction and infrastructure practice as serving contractors, owners, developers, engineers, architects, designers, financiers and investors, and says it works with organizations of varied sizes and complexity. CNA identifies surety markets commercial and contract surety bonds in all 50 states, Canada and Puerto Rico. A contractor or business should ask whether its trade, financial profile and bond amount fit the stated market and what documentation will be needed. 3 7
How the application moves
Aon describes its global construction practice designs and places risk solutions and uses broking experience and a global network across construction insurance lines. For construction surety, this is evidence of Aon’s brokered market offering; the page does not identify the insurer for a buyer’s placement. CNA describes surety markets commercial and contract surety bonds in all 50 states, Canada and Puerto Rico. Confirm the submission deadline, required indemnitors and how the executed bond reaches the obligee. 3 7
What to Confirm in Surety Bonds Quotes
- Ask Aon to confirm the quoted bond form, obligee and indemnity terms; its offering says construction surety bonds and describes them as financial security intended to guarantee contractor performance and payment to specified subcontractors, laborers and material suppliers. Actual bond obligations depend on the bond form and its terms. 3
- Ask CNA to confirm the quoted bond form, obligee and indemnity terms; its offering says surety markets commercial and contract surety bonds in all 50 states, Canada and Puerto Rico. 7
Aon and CNA Review Scores for 2026
These averages can combine ratings for different products, locations, and customer groups, including approximate BBB grade conversions. Read each review for the sources, scope, and calculation.
Aon Review Score
Review Score
3 rated sources
Public ratings for Aon are low: Trustpilot shows 1.2 out of 5 from 782 reviews, and BBB shows 1.6 from five. Aon is a global firm, so those pages mostly reflect other parts of the business, not large U.S. commercial accounts.[4][6][7]
Read Aon reviewsCNA Review Score
Review Score
1 rated source
Customer feedback on CNA is mixed and hard to compare. NerdWallet gave it 4.5 out of 5 for manufacturers, while Trustpilot shows about 1.4 out of 5 from 49 mostly self-selected reviews.[1][5]
Read CNA reviewsAon vs CNA Surety Bonds Compared
Aon vs CNA: Surety Bonds: documented features by provider
| Criteria | Aon Construction Surety brokerage and risk-advisory offering | CNA Surety and Commercial Bonds |
|---|---|---|
| Role in This Line | Aon says its global construction practice designs and places risk solutions and uses broking experience and a global network across construction insurance lines. For construction surety, this is evidence of Aon’s brokered market offering; the page does not identify the insurer for a buyer’s placement. 3Company-reported. Aon’s global construction and infrastructure practice page. This establishes a marketed brokerage/advisory offering, not policy issuance or account-specific placement. | Confirm in your quote. |
| Issuing Insurer | The reviewed practice page does not name the insurer or producing legal entity for a specific placement. Ask for both on the quote and binder. 3Not found in reviewed sources. Aon’s global practice page as reviewed 2026-09-30; no state-specific placement schedule or buyer quote was reviewed. This does not establish that Aon cannot arrange a placement. | Confirm in your quote. |
| Who It’s For | Aon describes its global construction and infrastructure practice as serving contractors, owners, developers, engineers, architects, designers, financiers and investors, and says it works with organizations of varied sizes and complexity. 3Company-reported. Audience described for Aon’s global construction and infrastructure practice. It does not establish U.S. state availability or underwriting eligibility for a placement. | CNA says its surety offering serves a range from individuals and small businesses to Fortune 1000 companies through agents and brokers. 7Company-reported. Entity: CNA brand; issuing CNA subsidiary may vary by product/state Product: United States commercial insurance Jurisdiction: United States Research source scope: Commercial/contract surety; US plus Canada/Puerto Rico Claim limitation: Company-reported; policy wording, underwriting and jurisdiction-specific availability control. |
| Coverage Features | Aon lists construction surety bonds and describes them as financial security intended to guarantee contractor performance and payment to specified subcontractors, laborers and material suppliers. Actual bond obligations depend on the bond form and its terms. 3Company-reported. Aon’s marketing description of the brokerage/coverage area. The page is not the insurer’s policy form and does not establish an insured's entitlement to coverage. | CNA Surety markets commercial and contract surety bonds in all 50 states, Canada and Puerto Rico. 7Company-reported. Entity: CNA brand; issuing CNA subsidiary may vary by product/state Product: United States commercial insurance Jurisdiction: United States Research source scope: Commercial/contract surety; US plus Canada/Puerto Rico Claim limitation: Company-reported; policy wording, underwriting and jurisdiction-specific availability control. |
| Limits and Retentions | The reviewed page does not state a buyer-specific limit, retention, deductible or other placement terms. Confirm these in the quote, bond or issued policy. 3Not publicly disclosed. Aon’s global practice page as reviewed 2026-09-30; no quote, bond form or issued policy was reviewed. | Confirm in your quote. |
| Risk Services | Aon describes project risk-advisory services to understand project-specific risks and develop risk-transfer, management or mitigation strategies. It also describes a global construction team and market access. These are company-reported brokerage and advisory services, not coverage benefits. 3Company-reported. Company-reported advisory services on Aon’s global practice page; account-specific service scope is not stated. | Confirm in your quote. |
| How to Apply | Confirm in your quote. | CNA bONdLINE supports underwriting, issuance and reporting of transactional bonds. 7Company-reported. Entity: CNA brand; issuing CNA subsidiary may vary by product/state Product: United States commercial insurance Jurisdiction: United States Research source scope: Commercial/contract surety; US plus Canada/Puerto Rico Claim limitation: Company-reported; policy wording, underwriting and jurisdiction-specific availability control. |
Related Pages for Aon vs CNA Surety Bonds
Surety Bonds Pages for Aon and CNA
Other Coverage Lines Compared for Aon vs CNA
Other Surety Bonds Provider Comparisons
Sources for Aon vs CNA Surety Bonds
Sources About Aon
- Commercial Risk Solutions U.S. Brokerage Terms of Service. Aon; Lines 120–127: certain-program broker-of-record scope, consultation, application assistance, client signature and bind instruction, and account administration; lines 140–147: variable and contingent compensation, potential placement incentive, and client request route; lines 206–213: no price guarantee and surplus-lines limitations; lines 229–231: client insurer-notice duty unless separately agreed. Accessed 2026-09-29.
- Middle Market Clients. Aon; Lines 125–132: mid-sized organizations and middle-market framing; lines 165–173: dedicated practice and North America statement; lines 188–224: Commercial Risk capabilities. No numeric company-size cutoff or U.S.-only eligibility rule is stated on the reviewed page. Accessed 2026-09-29.
- Construction and Infrastructure Insurance and Risk Management. Aon; Construction client audience and global placement role, lines 123–126; offering descriptions lines 135–156; coverage-area taxonomy lines 167–195; contact link lines 120–122. Global practice page; no U.S. state or account-specific placement schedule. Accessed 2026-09-30.
Sources About CNA
- Insurance for Small Businesses. CNA; Insurance for Small Businesses, lines 38-50 and 65-67 (CNA Central and agent route); lines 79-106 (product and stated appetite lists); page footer line 132 (CNA registered service mark). Accessed 2026-09-28.
- CNA Connect Small Businessowners Policy (BOP) | CNA Insurance. CNA; CNA Connect; coverages, product range, services. Accessed 2026-09-28.
- General Disclaimer. CNA; General Disclaimer paragraphs 1 and 5 (HTML lines 24 and 28): CNA describes Continental Casualty Company and its relevant affiliates; references to CNA may include one or more CCC affiliates; each particular policy/product/service is the responsibility only of the specific CNA company that issues or supplies it. Footer line 57 identifies CNA Financial Corporation as trademark registrant. Re-read 2026-09-29. Accessed 2026-09-29.
- CNA Surety - Surety and Fidelity Bonds | CNA Insurance. CNA; Surety/fidelity product sections, geography, agents/brokers, bONdLINE and claims services. Accessed 2026-09-28.
Sources for the Surety Bonds Guide
- Glossary of Insurance Terms. National Association of Insurance Commissioners; Surety Bond; Fidelity. Accessed 2026-09-16.
- Surety bonds. U.S. Small Business Administration; Opening guarantee of work completion; Contract or commercial bonds; Bid, Payment, Performance, Ancillary; Eligibility > credit, capacity, and character. Accessed 2026-09-16.
- 40 U.S. Code § 3131 — Bonds of contractors of public buildings or works. Legal Information Institute, Cornell Law School, reproducing 40 U.S.C. § 3131; §3131(b) Type of Bonds Required — performance bond and payment bond. Accessed 2026-09-16.
- Surety Bonds. Chubb; Construction Surety Bonds (performance, payment, maintenance); Commercial Surety Bonds (license and permit, court, commercial contract). Accessed 2026-09-16.
- Surety Bonds Insurance. Harper; What is Surety Bonds insurance?; A bond is not insurance; License & permit bonds; Contract bonds — bid, performance, and payment; Is a bond the same as insurance? Accessed 2026-09-16.
