The extension process is automated so that all individual income tax payers are given an extension of time to file their tax returns if certain. Your income tax return may be filed at any time within the six-month extension period.Use the MAExt screen in the Payments folder to generate the Form M-4868 extension voucher. Per TIR 16-10, you don't need to file an extension request. When filling out Form M4868, you will need to provide your personal information, such as your name, address, and social security number. How do I fill this out? To fill out Form M-4868, you will need to gather your estimated tax liability and previous payments. PENALTYucator - Late Filing, Payment Penalties? Thoroughly fill out the chosen tax extension form. Include all the required information, such as your signature and the date.