Montana has no sales tax. The law in Montana allows entities to register a sales tax-free automobile in the state. Montana law does not technically require shareholder agreements. The extent to which a small company is mandated to pay income tax in Montana depends on its income. For instance, a corporation pays double taxation—the company must pay corporate license tax (income tax) in Montana, as a legal entity and shareholders are required to pay personal income tax on dispersed dividends. A Montana LLC on the other hand only pays income tax.