(a) Unless otherwise provided by this section, a health maintenance organization shall deposit with the comptroller cash or securities, or any combination of cash, securities, and other guarantees that are acceptable to the commissioner, in the amount prescribed by this section.
(b) The amount of a health maintenance organization’s initial deposit or other guarantee must be $100,000 for a health maintenance organization offering basic health care services, $75,000 for a health maintenance organization offering limited health care services, and $50,000 for a health maintenance organization offering a single health care service plan.

(c) On or before March 15 of the year following the year in which the health maintenance organization receives a certificate of authority, it shall deposit with the comptroller an amount equal to the difference between the initial deposit and 100 percent of its estimated uncovered health care expenses for the first 12 months of operation.
(d) On or before March 15 of each subsequent year, a health maintenance organization shall deposit the amount of the difference between its total uncovered health care expenses, based on its annual statement from the previous year, and the total amount previously deposited and not withdrawn from the state treasury. For any subsequent year in which the amount of the difference specified by this subsection is zero or less, the commissioner may not require the health maintenance organization to make any additional deposit under this subsection.
(e) If, on application made not more than once in each calendar year by a health maintenance organization, the commissioner determines that the amount previously deposited by the health maintenance organization has exceeded the amount required to be on deposit by more than $50,000 for a continuous 12-month period, the commissioner shall allow the health maintenance organization to withdraw the portion of the deposit that exceeds by more than $50,000 the amount required to be on deposit, unless the commissioner determines that the release of a portion of the deposit could be hazardous to enrollees, creditors, or the public.
(f) If, on application, the commissioner determines that the amount previously deposited by a health maintenance organization continues to exceed the amount required to be on deposit, the commissioner shall allow the health maintenance organization to withdraw the portion of the deposit that exceeds the amount required to be on deposit, unless the commissioner determines that the release of that portion of the deposit could be hazardous to enrollees, creditors, or the public.
(g) On application by a health maintenance organization operating for more than one year under a certificate of authority, the commissioner may waive some or all of the requirements imposed by Subsection (b), (c), or (d) for any period if the commissioner determines that the waiver is justified because:
(1) the total amount of the deposit or other guarantee is equal to at least 25 percent of the health maintenance organization’s estimated uncovered expenses for the next calendar year;
(2) the health maintenance organization’s net worth is equal to at least 25 percent of its estimated uncovered expenses for the next calendar year;
(3) the health maintenance organization has a net worth of at least $5 million; or
(4) the health maintenance organization’s sponsoring organization has a net worth of at least $5 million for each health maintenance organization whose uncovered expenses the sponsoring organization guarantees.
(h) If one or more of the requirements imposed by Subsection (b), (c), or (d) is waived, any amount previously deposited shall remain on deposit until released in whole or in part by the comptroller on order of the commissioner under Subsection (g).
(i) A health maintenance organization that has made a deposit with the comptroller may, at its option, withdraw the deposit or any part of the deposit after substituting a deposit of cash or securities of equal amount and value to the withdrawn deposit or portion of deposit. The commissioner must first approve any securities being substituted.