General liability, workers’ comp, commercial auto, professional liability, and tools and equipment coverage are all fully deductible business expenses. So are bond premiums, umbrella policies, and health insurance premiums when properly structured. Track each policy as its own line item in your chart of accounts instead of lumping everything into a single insurance category.

The reason to separate policies comes down to visibility. A single “Insurance Expense” account tells you what you spent but not where. Broken out by policy, you see that workers’ comp is eating 8% of labor cost or that commercial auto jumped 30% after a claim. That information drives real conversations about coverage, deductibles, and whether you’re getting competitive quotes at renewal.

Workers’ comp deserves particular attention. Premiums are set by classification code, and the code assigned to each employee has a big impact on cost. A plumber doing installation work carries a different rate than an office employee. If everyone defaults to the highest-risk code, you’re overpaying. Track payroll by class code throughout the year because the annual premium audit reconciles what you actually paid against what you owed. Getting this right can mean thousands of dollars back or saved at audit time.

Commercial auto premiums for trucks, vans, and trailers are fully deductible. If you use the actual expense method on business vehicles, insurance is one component of total vehicle cost. If you use the standard mileage rate for a personally owned vehicle used in business, insurance is already built into that rate and isn’t deducted separately.

Tools and equipment coverage, sometimes called inland marine, protects against theft or damage of job site equipment. Track this apart from general liability because the premium is tied to the value of equipment you own, not to revenue or payroll. As you acquire more tools, both your coverage and your premium grow, and you want to see that trend in your books.

Professional liability matters for design-build contractors, specialty trades operators providing plans or consulting, and anyone whose work involves specifications or advice. Smaller operators often forget this coverage because they don’t think of themselves as professionals, but the exposure is real.

Health insurance deducts differently depending on structure. If your business pays premiums for W-2 employees, it’s a straight business expense. If you’re self-employed and pay your own premiums, it flows as an above-the-line deduction on your personal return rather than on Schedule C. S corp owners have specific rules requiring premiums be added to W-2 wages before being deducted. The mechanics matter, and getting them wrong creates problems at tax time.

Keep policy declaration pages and renewal notices organized by policy so you have them ready when your accountant asks about coverage or a lender wants proof of insurance. Most trades operators we work with at A Squared Bookkeepers in Pasadena come in with insurance buried in one lump account. Breaking it out takes an hour and pays dividends every month after.