Maryland: corporate income tax, franchise tax unconfirmed and an annual report required.
Each fact below cites the agency page we read and the day we read it. Where a rule is still being confirmed, the page says so instead of showing a zero.
Verified facts
Corporate income tax
Yes
flat 8.25% of Maryland taxable income
Franchise or privilege
Not verified
Not verifiedEntity annual report
Yes
annual · April 15 each year; the first report is due in the year after formation (e.g., a business formed at any point in 2024 has its first annual report due April 15, 2025). Reports may be filed beginning January 1.
Return due date
Published rule
15th day of the 4th month after the close of the tax year (April 15 for calendar-year filers)
Extension
7 months
Form 500E filed by the original due date; if no tax is due the extension may be filed online, by telefile, or on paper for a first filing.
Zero activity / minimum tax
Every Maryland corporation must file Form 500 even if it has no taxable income or is inactive; a multistate corporation not subject to Maryland tax may file a return showing an apportionment factor…
No minimum corporation income tax amount was stated on the retrieved official pages.
Long-form guide in professional review
Dates, extensions and payments
Filing and payment dates stay separate wherever the source supports it.
- Filing
Return filing
15th day of the 4th month after the close of the tax year (April 15 for calendar-year filers)
15th day of the 4th month following the close of the fiscal year; corporations given a later federal due date are given the same Maryland due date
- Payment
Tax payment
Separate dateTax is due with the return by the original due date; an extension to file does not extend the time to pay.
The payment date is separate from the filing date
- Extension
Extension
Does not extend paymentForm 500E filed by the original due date; if no tax is due the extension may be filed online, by telefile, or on paper for a first filing.
Automatic · 7 months
- Entity report
Entity report
annualApril 15 each year; the first report is due in the year after formation (e.g., a business formed at any point in 2024 has its first annual report due April 15, 2025). Reports may be filed beginning January 1.
Required even if the business had no revenue, had not started operating, or has one employee. Personal property tax returns are a separate filing with a $20,000 original-cost threshold for filing years 2023 and after.
Email me the Maryland guide
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Frequently asked questions
Does Maryland impose a corporate income tax?
Yes. flat 8.25% of Maryland taxable income Form: Form 500 (Corporation Income Tax Return).
When is the Maryland corporate return due?
15th day of the 4th month after the close of the tax year (April 15 for calendar-year filers)
Does an extension also postpone the tax payment?
No. The extension moves the filing date, not the payment date; unpaid tax can accrue penalty and interest.
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