Electronic Filing Options Electronic Filing Options Montana income tax returns can be filed electronically when filing a federal tax return.
Electronic returns are free of data entry or keypunch errors, and free of math errors.
Your refund on a paper return can take up to 6 weeks, depending on when you file. With an electronic return, your refund takes no more than 7 days. With E-File, you also get a receipt that your return was received. No wondering if the Department received your tax filing. Electronic filing also reduces the processing costs incurred by the Department.