Estates and trusts must file a Montana Income Tax Return for Estates and Trusts (Form FID-3) if:
Beginning with Tax Year 2024, estates and trusts must file a Montana Income Tax Return for Estates and Trusts (Form FID-3) if they have a federal filing requirement, considering any Montana additions to federal taxable income.
The estate or trust's fiduciary must:
The beneficiaries report this income on their Montana Individual Income Tax return.
An estate or trust's tax returns are due when its federal form is due:
Calendar Year | April 15 |
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Fiscal Year | The 15th Day of the 4th month following the end of its tax year. Example: If your fiscal year ends on June 30, your return is due on October 15. |
If the due date falls on a weekend or holiday, it is due on the next business day. |
An estate or trust receives an automatic six-month filing extension. There is no need to apply for an extension to receive a Montana extension.
Extension returns are due:
Calendar Year | October 15 |
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Fiscal Year | The 15th Day of the 10th month following the end of its tax year. Example: If your fiscal year ends on June 30, your return is due on April 15. |
If the extended due date falls on a weekend, it is due on the next business day. |
Extension deadlines are for returns only.
Any tax liability must still be paid by the original due date or it will be subject to penalties and interest.
You may file your estate or trust's income tax return:
You may pay your estate or trust's income tax:
An estate is a resident estate if the decedent was a Montana resident on the date of his or her death.
This includes bankruptcy estates.
Several factors determine a trust's residency, including:
Examples of resident trusts include:
More information about trust residency can be found in ARM 42.30.101.
All other estates or trusts are nonresident estates or trusts.
A nonresident estate or trust calculates taxes the same as a resident estate or trust, multiplied by the percentage of Montana source income.
A nonresident estate or trust reports Montana source income the same as a nonresident individual taxpayer.
A common trust fund maintained by a bank files federal Form 1065, U.S. Return of Partnership Income.
For Montana purposes, the fund would file a Montana Pass-Through Entity Information and Composite Tax Return (Form PTE).
Do not use a decedent's social security number for an estate.
If the Federal Employer Identification Number (FEIN) is not available at the time of filing, enter "applied for" and the application date in the box provided.
Exempt trusts filing federal Form 990-T, Exempt Organization Business Income Tax Return to report unrelated business income must file a Montana Corporation Income Tax Return (Form CIT) and pay any applicable tax to Montana.
A fiduciary files federal Form 5227, Split-Interest Trust Information Return along with a statement to support the following:
Complete only the heading portion of Form FID-3 and mark the "Pooled Income Fund" box. Do not show any dollar amounts on the form itself. Show the dollar amounts only on the supporting statement. Include the supporting statement and a complete copy of federal Form 5227, Split-Interest Trust Information Return with the Form FID-3.
Pre-need funeral trusts can elect to file the return and pay the tax for qualified funeral trusts.
A fiduciary files federal Form 1041-QFT, U.S. Income Tax Return for Qualified Funeral Trusts.
A fiduciary of more than one qualified funeral trust may file the Montana Income Tax Return for Estates and Trusts (Form FID-3) listing all qualified funeral trusts included on the composite federal return, rather than a separate return for each trust.
Taxes due are based on the combined income for all included QFTs, minus a $2,960 exemption.
These funds file a Montana Corporation Income Tax Return (Form CIT) in Montana.
A QSST follows the rules for grantor trusts.
Any income from S corporation stock is treated as owned by the beneficiary.
A section 645 election lets a qualified revocable trust to be treated as part of the estate during the election period.
An election made at the federal level also applies for Montana.
Complete only the heading portion of the Montana Income Tax Return for Estates and Trusts (Form FID-3) and mark the "Other" box.
Do not show any dollar amounts on the Form FID-3. Show dollar amounts only on the supporting statement.
Include the supporting statement and a complete copy of the federal Form 5227, Split-Interest Trust Information Return.