QuoteSweep analyzed the published appetite of 553 US commercial property & casualty carriers. The headline findings: general liability is the most widely written line (445 of 553 carriers), but cyber liability is written by fewer than half (246); manufacturing is the most-competed industry (103 carriers) while higher-hazard classes attract a fraction of that; only 24% of these carriers let a business get a quote online; and market depth swings from 134 carriers in Pennsylvania to 41 in Alaska. In short: "commercial insurance" isn't one market — it's hundreds of narrow ones.
This is a first-party dataset. The figures below come from QuoteSweep's own carrier-appetite registry — 553 carriers normalized from their public appetite guides, coverage pages, and state filings into one machine-readable corpus of 5,066 industry-appetite signals across 40 coverage lines and all 50 states plus DC.
How we built this
We enriched 553 US commercial P&C carriers into a single schema capturing, per carrier: the coverage lines they write, the industries they target, the states they're available in, business-size limits, and whether they offer online quoting. Every field traces to that carrier's own published materials. This is not a market-share or premium ranking — it's an appetite analysis: which carriers say they will write which business. Counts below are the number of carriers (out of 553) whose published appetite includes each line, industry, or state.
The most competed-for industries
Carriers cluster around a handful of large, well-understood industries. Manufacturing, construction, and restaurants draw the most carriers; the long tail of niche and higher-hazard classes draws far fewer.
| Industry | Carriers writing it |
|---|---|
| Manufacturing | 103 |
| Construction | 95 |
| Restaurants | 77 |
| Retail | 69 |
| Contractors | 62 |
| Healthcare | 55 |
| Real Estate | 49 |
| Hospitality | 43 |
| Professional Services | 42 |
| Artisan Contractors | 41 |
The practical read: if you run a manufacturing or retail business, dozens of carriers will compete for it. The further your business sits from these mainstream categories, the fewer markets you have — and the more likely you are to need a specialist or the excess & surplus (E&S) market.
Coverage lines: what carriers actually write
General liability and commercial property are near-universal; the specialized lines thin out quickly. Notably, cyber liability — one of the fastest-growing exposures for small business — is written by fewer than half of these carriers.
| Coverage line | Carriers writing it |
|---|---|
| General Liability | 445 |
| Commercial Property | 424 |
| Commercial Auto | 313 |
| Umbrella / Excess | 302 |
| Workers' Compensation | 294 |
| Professional Liability | 253 |
| Cyber Liability | 246 |
| Inland Marine | 245 |
Market depth varies enormously by state
A business in Pennsylvania has roughly three times the carrier options of a business in Alaska. 228 carriers write nationwide; the rest pick their states.
| State | Carriers available | State | Carriers available | |
|---|---|---|---|---|
| Nationwide | 228 | Arizona | 107 | |
| Pennsylvania | 134 | Texas | 106 | |
| Illinois | 122 | … | ||
| Georgia | 119 | Wyoming | 59 | |
| Tennessee | 118 | Hawaii | 42 | |
| Virginia | 117 | Alaska | 41 |
If you operate in a thin-market state, expect fewer quotes and a greater chance of landing in the E&S market — not because your business is riskier, but because fewer admitted carriers file there.
The market that hasn't gone digital
Two structural facts stand out for anyone who assumes commercial insurance works like personal auto:
- Only 131 of 553 carriers (24%) offer online quoting at all. For most commercial coverage, a human still has to touch the submission.
- 10% of the carriers analyzed are E&S / surplus-lines only (55 carriers), with another 3% writing both admitted and E&S. The admitted market most buyers picture is only part of the picture.
This is why commercial insurance is so much harder to shop than personal lines — and it connects to a separate QuoteSweep audit finding that 172 of the largest US commercial carriers have no small-business quoting API at all, representing roughly $175 billion in premium that can't be quoted programmatically.
What this means
For business owners: the carriers that will compete for your policy depend heavily on your industry, size, and state — not just your budget. If you're in a mainstream class in a deep-market state, shop widely. If you're in a niche or higher-hazard class, or a thin-market state, you likely need an independent agent with E&S access rather than a direct online quote.
For agents: appetite is fragmented and poorly disclosed, which is exactly why matching a risk to the right markets is still skilled work. The thin online-quoting rate (24%) is the structural reason quoting commercial business is slow.
Frequently asked questions
How many carriers write commercial insurance in the US?
There are hundreds of active commercial P&C carriers. QuoteSweep's appetite registry normalizes 553 of them; general liability, the most widely written line, is offered by 445.
What is the most competitive commercial insurance class?
By number of carriers with published appetite, manufacturing leads (103 carriers), followed by construction (95) and restaurants (77). Higher-hazard and niche classes have far fewer markets.
Why can't I get commercial insurance quotes online?
Only about 24% of major commercial carriers offer online quoting, and 172 of the largest have no quoting API. Most commercial coverage still requires a human-handled submission — the main reason it's slower to shop than personal auto or home insurance.
Which states have the most commercial insurance carriers?
Among the 553 carriers analyzed, Pennsylvania (134), Illinois (122), and Georgia (119) have the deepest markets; Alaska (41), Hawaii (42), and DC (54) among the thinnest. 228 carriers write nationwide.
About this data
These figures come from QuoteSweep's proprietary carrier-appetite registry, normalized from carriers' own published appetite guides, coverage pages, and state availability. It powers the free appetite checker. Appetite reflects what carriers publish, not a guarantee any carrier will bind a given risk. We'll refresh this report as the registry is re-enriched. Questions or corrections: agent@quotesweep.com.
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