2027 Michigan Tax Deadlines
Michigan Individual income tax filing deadlines and extensions for 2027
Michigan Individual income tax, Corporate Income Tax, elective flow-through entity tax, city income tax, and estimated-payment planning for tax year 2027.
Michigan tax deadlines are easier to manage when the filing calendar, payment rules, extensions, source links, and state-specific forms sit in one place. Tax year 2027 returns are generally filed in 2028, while estimated payments run through 2027 and early 2028.
These dates apply to calendar-year filers. Fiscal-year filers follow different due dates tied to their fiscal year and should confirm the applicable Michigan deadline before filing or paying.
Last updated: August 5, 2026
Key Michigan tax dates at a glance
- April 15, 2027: First Individual estimated payment.
- June 15, 2027: Second Individual estimated payment.
- September 15, 2027: Third Individual estimated payment.
- January 18, 2028: Fourth Individual estimated payment.
- March 31, 2028: Calendar-year flow-through entity tax return and payment when elected.
- April 18, 2028: Calendar-year Individual return and payment.
- May 1, 2028: Calendar-year Corporate Income Tax return and payment.
- September 30, 2028: Extended flow-through entity tax return, file only.
- October 16, 2028: Extended Individual return, file only.
- January 2, 2029: Extended Corporate Income Tax return, file only.
When are Michigan taxes due in 2027?
Michigan 2027 calendar-year Individual returns are generally due April 18, 2028, flow-through entity tax returns are due March 31, 2028, and Corporate Income Tax Form 4891 is due May 1, 2028, under the last-day-of-month rule.
When is the Michigan C Corporation return due?
Michigan C Corporations should plan around May 1, 2028, for the calendar-year corporate-facing return, tax, or business-level filing noted on this page.
- Form 4891: Michigan Corporate Income Tax Annual Return.
What are Michigan C Corporation extension rules?
The extended filing deadline for the main calendar-year Michigan corporate-facing return is January 2, 2029. The extension is to file only, and tax or required payments remain due by May 1, 2028.
When are Michigan S Corporation and Partnership returns due?
Michigan S Corporations should plan around March 31, 2028, when the flow-through entity tax is elected, and Partnerships should plan around March 31, 2028, when the flow-through entity tax is elected.
Which Michigan pass-through forms are required?
Use the applicable Michigan pass-through return and related payment or owner-reporting forms for the entity type and election facts.
- Form 5772: Elective flow-through entity tax annual return.
- Form 5774: Flow-through entity tax estimated payment voucher.
What are Michigan pass-through extension rules?
The extended filing deadline for calendar-year Michigan S Corporation and Partnership returns is September 30, 2028. The extension is to file only, so tax, withholding, composite, or entity-level payments should be handled by the original deadline.
When is the Michigan Individual income tax return due?
Calendar-year Michigan Individual income tax returns and payments are due April 18, 2028.
- Form MI-1040: Resident Individual income tax return.
- Schedule NR: Nonresident or part-year resident allocation.
- Form MI-1040ES: Individual estimated tax vouchers.
What Michigan Individual rate and residency issues should be checked?
Tax year 2027 Individual instructions should be checked for final rate tables, standard deductions or exemptions, residency rules, retirement-income treatment, credits, estimated-payment thresholds, and any filing-year changes specific to Michigan.
When are Michigan estimated payments due?
Michigan estimated-payment planning should distinguish Individual payments, CIT payments, elective flow-through entity tax payments, and city income-tax exposure.
- April 15, 2027: First estimated payment.
- June 15, 2027: Second estimated payment.
- September 15, 2027: Third estimated payment.
- January 18, 2028: Fourth estimated payment.
Who must make Michigan estimated payments?
Taxpayers should use the final 2027 Michigan instructions to confirm estimated-payment thresholds, safe-harbor rules, credits, withholding, pass-through owner treatment, and electronic-payment requirements.
What are Michigan extension deadlines?
Michigan extension deadlines are September 30, 2028, for pass-through filings, January 2, 2029, for corporate-facing filings, and October 16, 2028, for Individual returns. Extensions add filing time only; payment deadlines remain tied to the original return due dates.
What Michigan-specific rules should tax professionals watch for 2027?
Beyond the core return deadlines, Michigan tax professionals should track state-specific rate, credit, local-tax, industry, and filing-method rules before the 2027 season locks.
- Michigan's current Individual income tax rate is 4.25%, while the tax-year 2027 rate remains subject to the state's statutory rate-setting process.
- Michigan generally does not require a separate income-tax return from a non-electing S Corporation or Partnership.
- Electing entities should coordinate Form 5772, Form 5774, the election period, annual-return filing, extension requirements, owner-level credits, nonresident treatment, and federal tax consequences.
- Michigan cities may impose separate income taxes, including resident and nonresident filing obligations, employer registration, city withholding, business nexus, apportionment, city return obligations, and city-specific payment or e-filing rules.
- Use Michigan Treasury Online to file, pay, manage notices, and verify account activity, and confirm mandatory electronic filing for each return type.
- Michigan has no general deduction for federal income taxes paid, so additions and subtractions should be reconciled to current instructions.
- Manufacturing businesses should review industrial-processing and manufacturing-equipment sales-tax exemptions, research and development credit eligibility, property-tax abatements, development incentives, and automotive-supplier sourcing.
- Automotive and mobility businesses should review supplier and manufacturing incentive agreements, electric-vehicle and battery-manufacturing project incentives, research, testing, autonomous mobility, and location-level sales, use, property, and withholding obligations.
- Business incentives include Michigan Business Development Program incentives, Renaissance Zone benefits, Transformational Brownfield Plan benefits, research and development tax credits, local property-tax abatements, and job-creation incentives.
- Technology businesses should evaluate high-technology startup and investment programs, university research partnership opportunities, data, software, intellectual-property, and multi-state sourcing issues.
- Agriculture and food-processing businesses should review agricultural and processing-equipment exemptions, beginning-farmer and rural-development programs, value-added agriculture incentives, and farmland-preservation or property-tax programs.
- Great Lakes and environmental projects may involve water-quality improvement programs, clean-energy and renewable-energy development incentives, environmental remediation, brownfield benefits, certification, recapture, and reporting requirements.
- Retirement-income review should include qualifying military retirement pay, Social Security benefits, age- and birth-year-based pension treatment, senior credits, and household credits.
- Michigan's corporate and flow-through entity returns use last-day-of-month rules, so preserve the May 1, 2028, CIT due date and January 2, 2029, CIT extension date.
Tax-professional context: Several considerations make Michigan's tax landscape unique for 2027. Michigan pairs a 4.25% flat Individual income tax with a 6% Corporate Income Tax and layers city income taxes (for example, Detroit) on top of the state rate. The state remains business-friendly through numerous incentive programs, electronic filing continues to expand, and Michigan offers specific planning opportunities for manufacturing, automotive, and technology companies.
Electronic filing requirements:
- C Corporations and pass-through entities should file electronically through Michigan Treasury Online.
- Individuals can use Michigan's online system for free electronic filing.
- Business deductions can be processed more efficiently through electronic systems.
- Professional preparers must use approved software vendors.
Business Tax Credits:
- Michigan Business Development Program
- Transformational Brownfield Plan
- Renaissance Zone credits
- Research and development tax credits
Instead AI helps tax teams treat Michigan due dates as operational work, not a static checklist.
Michigan's city income taxes and flow-through entity tax add layers beyond the state rate so that firms can find specialists via the accounting firm directory.
What sources support these Michigan dates?
Put Michigan month-end deadlines on one calendar
Instead's AI-driven tax platform helps Michigan teams coordinate return work, payment review, extensions, and filing follow-through before deadlines move from planning to execution.
For Michigan practices, multi-entity, estimates, and businesses help connect research, planning, and operational handoffs without duplicating deadline data. Built for tax professionals who want source-backed state deadline control across clients, entities, and reviewer workflows.
The material discussed on this page is meant for general illustration and/or informational purposes only and is not to be construed as investment, tax, or legal advice. You must exercise your own independent professional judgment, recognizing that advice should not be based on unreasonable factual or legal assumptions or unreasonably rely upon representations of the client or others. Further, any advice you provide in connection with tax return preparation must comply in full with the requirements of IRS Circular 230.
Please note that if any due date falls on a federal or state holiday or weekend, it may be adjusted to the next business day. Always verify current deadlines with the appropriate tax professional and authorities.
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