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July 24 |
Last day for in-person paper check payments at branch offices for personal income, pass-through entity, and fiduciary taxes. Branch offices close at 4:30 p.m. Electronic payments and money orders will continue to be accepted.
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July 29 |
Last day to electronically file a return or make a payment through current online systems, by 11:59 p.m. Online filing and payments for individuals will resume in Maryland Tax Connect on September 1. |
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August 20 |
Last day to electronically file and pay Business Taxes, by 11:59 p.m.
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August 21-31 |
All tax systems are down for migration of records and data validation. E-check and credit card payments will continue to be accepted and processed during this period, although they will not post to taxpayer accounts until after September 1. |
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September 1 |
Maryland Tax Connect for Individual Taxpayers is live. All services resume.
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**No penalties will be assessed for any payment or filing deadline that falls within the system’s outage window.**
E-check payments will remain available throughout the entire transition period. This free, fast, and secure payment method debits directly from a taxpayer’s bank account and can be used for existing balances, estimated payments, and extension payments. More information is available at MarylandComptroller.gov/Payments.
Taxpayers, tax professionals, and community partners are encouraged to visit MarylandComptroller.gov/IndividualTaxHub for a complete list of key dates, answers to frequently asked questions, and resources to share with constituents and clients. The page will be updated regularly through the September 1 launch.









