You can deduct business-related auto insurance expenses, but your husband’s vehicle may only be deductible if it is used for your business and titled under your business entity.When considering deductions, it's essential to maintain accurate records of the vehicle's business use, including mileage logs and any expenses incurred. If the vehicle is used for both personal and business purposes, only the portion attributable to business use can be claimed. Additionally, make sure to review IRS guidelines or consult with a tax professional to ensure compliance and maximize your deductions. Always keep documentation ready in case of an audit.