To apply for a tax extension in Michigan, individuals must complete and submit Form MI-1040, the Michigan Individual Income Tax Return, along with the appropriate extension request. This form allows taxpayers to request an automatic six-month extension to file their state income tax return. It is important to note that while the extension grants additional time to file, it does not extend the deadline for payment of any taxes owed. Taxpayers should ensure that any taxes due are paid by the original due date to avoid interest and penalties. To find detailed instructions and forms, visiting the official Michigan Treasury Department website would be beneficial. It provides up-to-date information and resources to assist with the tax extension process.