Critical Dates for Tax Year 2024 Return Filing

Carefully review the following instructions to ensure timely and accurate filing  

How to send us your tax documents 

• Logon to the Onvio client portal from your PC when sending confidential information
• After signup, download the “Onvio Client Center” app for your smart phone (optional)
• Securely upload documents from your smart phone or device using the Onvio app
• Documents can be mailed, faxed, or hand delivered to our office if done timely
• Tax preparation will commence after our office can receive all required documents 

BUSINESS TAX RETURNS:  Filing due date is March 17, 2025

• Provide us with COMPLETE information by February 1st for timely filing
• Returns with missing or incomplete information after this date will be placed on extension
• Business returns on extension will have until August 1st to provide complete information 
• Failure to follow these instructions may result in delinquent filing and unnecessary late filing penalties

INDIVIDUAL TAX RETURNS:   Filing due date is April 15, 2025

• Provide us with COMPLETE information by March 1st for timely filing
• Returns with missing or incomplete information after this date will be placed on extension
• Individual returns on extension have until September 1st to provide complete information 
• Failure to follow these instructions may result in delinquent filing and unnecessary late filing penalties

Important filing deadlines for extended returns 

Note the requirements above for providing complete information – those are the effective deadlines 

• Extended Partnership and S-Corporation returns are due September 15, 2025
• Extended Individual and C-Corporation returns are due October 15, 2025

See tax due dates for additional due dates and information