How are rates determined?Published on: May 22, 2023
TWIA rates determine the amount of premium charged to each TWIA policyholder. Adequate rates help ensure TWIA can meet its financial obligations. Rates are set by the TWIA Board of Directors and subject to review by the Texas Department of Insurance (TDI). Texas Insurance Code Chapter 2210 requires that TWIA rates be reasonable, adequate, and not unfairly discriminatory. Premiums are calculated based on standard rating factors, including amount of insurance, type of construction, deductible amount, and any optional additional coverages. Premium credits are available for items certified as being built to recent windstorm building codes.