Mich. Comp. Laws § 500.5267

Sec. 5267. It shall not be lawful for the directors or managers of any domestic fire insurance company to declare any dividend, except from the surplus profits arising from their business; and in estimating such profits, there shall be reserved from its admitted assets a sum equal to the amount of unearned premiums on unexpired risks and policies, and all other outstanding liabilities: Provided, always, That no company may declare dividends exceeding 10%, on its capital stock, in any 1 year, unless it shall have accumulated and be in possession of a surplus, in addition to the amount of its capital stock, and of such dividend, and all outstanding liabilities, equal to 1/4 of the amount of the unearned premiums on risks not terminated at the time of making such dividend or 1/2 of its capital stock, whichever is the greater. Any dividend made contrary to these provisions, shall subject the company making the same to a forfeiture of its corporate rights, and each stockholder receiving it to a liability to the creditors of such company to the extent of the dividend received, in addition to the other penalties and punishments in such case made and provided.