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*Our 2025 Tax Season Newsletter is now here! Check it out in the Newsletter Tab.*
Thank you for choosing Whitwell's Accounting Services for your accounting needs. If you are interested in scheduling an appointment with one of our Associates, please call our office to help you make an appointment.
Check out our Newsletter that contains information that you may find useful!
Announcements:
Announcements:
One Big Beautiful Bill has passed. Many tax changes have been made. Information is in our Newsletter.
One Big Change: In 2026, all refunds will be direct deposit. No checks will be issued. Bank information must be provided on your tax return.
The IRS has set the Business Standard Mileage Rate for 2026. For Business Use, 72.5 cents/mile. For Medical purposes, 20.5 cents/mile. For Charitable Organizations, 14 cents/mile.
Appointments scheduling for 2026 Tax Returns begins on October 1st, 2026.
Location:
Location:
340 C Mid Rivers Mall Dr.
St. Peters, MO 63376
Regular Hours*:
Regular Hours*:
Monday: 9:00 am - 5:00 pm
Tuesday: 9:00 am - 12:00 pm
Wednesday: 9:00 am - 5:00 pm
Thursday: 9:00 am - 5:00 pm
Friday: Closed
Saturday: Closed
Sunday: Closed
Tax Season Hours**:
Tax Season Hours**:
Monday: 8:00 am - 7:00 pm
Tuesday: 8:00 am - 7:00 pm
Wednesday: 8:00 am - 7:00 pm
Thursday: 8:00 am - 7:00 pm
Friday: 8:00 am - 6:00 pm
Saturday: 8:00 am - 3:00 pm
Sunday: Closed
*These hours are subject to change. Please call our office for confirmation of hours.
**January 19th - April 15th
Contact Us
Contact Us
Phone: 636-485-2995
Fax: 636-278-4510
Office Cell: 636-875-2845
Important Dates to Remember
Important Dates to Remember
Tax Return Dates:
Tax Return Dates:
March 16th, 2026 - S-Corp & Partnership Tax Returns Due
April 15th, 2026 - Personal Tax Returns Due
September 15th, 2026 - Business Extension Returns Due
October 15th, 2026 - Personal Extension Returns Due
Estimated Payment Dates:
Estimated Payment Dates:
January 15th, 2026 - 4th Quarter Estimated Tax Due
April 15th, 2026 - 1st Quarter Estimated Tax Due
June 15th, 2026 - 2nd Quarter Estimated Tax Due
September 15th, 2026 - 3rd Quarter Estimated Tax Due
Quarterly Dates:
Quarterly Dates:
February 2nd, 2026- 4th Quarter (2025) Due
April 30st, 2026 - 1st Quarter (2026) Due
July 31st, 2026 - 2nd Quarter Due
September 30st, 2026 - 3rd Quarter Due
February 1st, 2027 - 4th Quarter Due
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