The following forms and resources are provided as a benefit to our clients. They are kept up-to-date as possible, but please notify us if you feel something is dated or in error. If you have questions regarding the use of any forms, please contact an EWH Accountant or Accounting Assistant.
Keeping You in Check With Uncle Sam

NOTE: Auto-fill forms must be completed in Adobe Acrobat on a computer or device. Please open the PDF questionnaire first, then use the Download button at the upper right to save the form on your device. Then fill out the form and save when complete. This ensures all your personal information remains secure on your device.
How-to video on completing the Tax Organizer and uploading documents.
Individual Income Tax
- Federal income tax deposits/estimates are due on April 15, June 15, September 15 and January 15
- State income tax deposits/estimates are due on the 15th of April, June, September and December
Corporate Income Tax
- Tax deposits are due on the 15th day of the 4th, 6th, 9th and 12th month of the fiscal year
- Income Tax
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- Income Tax Due Dates
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Individual Income Tax
- Federal income tax deposits/estimates are due on April 15, June 15, September 15 and January 15
- State income tax deposits/estimates are due on the 15th of April, June, September and December
Corporate Income Tax
- Tax deposits are due on the 15th day of the 4th, 6th, 9th and 12th month of the fiscal year
- Tracking My Tax Refund
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- Record Retention Guidelines
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- Sales Tax
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Have a unique financial, accounting, or bookkeeping need?
Contact us today at one of our four locations in Waukesha, Madison, Onalaska, or West Bend - we can help!
