Section 26.1-20.1-10 - Application of unearned premiums1. Whenever a financed insurance policy or assigned risk policy is canceled, the insurer shall return whatever gross unearned premiums, computed on a pro rata basis, are due under the insurance policy or assigned risk policy to the insurance premium finance company for the account of the insured. The unearned premiums must be returned within thirty days after the date of cancellation. This action by the insurer satisfies the insurer's obligation under the insurance policy or assigned risk policy to return unearned premiums.2. If a premium is subject to an audit to determine the final premium amount, the gross unearned premium must be calculated upon the premium deposited and the insurer shall return whatever gross unearned premiums are due based upon the deposit rather than the actual unearned premium to the insurance premium finance company for the account of the insured or insureds.3. If the crediting of returned premiums to the account of the insured results in a surplus over the amount due from the insured, the insurance premium finance company must refund any amount of one dollar or more to the insured within thirty days after receipt of the returned premium.