Updated September 7, 2023
This article will cover:
- What information OnPay needs from you
- What state and local taxes and filings OnPay handles for Iowa employers
- Where you can find the tax account numbers needed
- Paying employees in other states?
Why is this important?
For employers who pay employees in Iowa, use this guide to learn what’s required to start running payroll while keeping compliant with state payroll tax regulations. Without this information, OnPay will be unable to file or deposit any Iowa tax payments for your company. Any penalties and interest that accrue from missed tax payments will be your company’s responsibility.
What information OnPay needs from you
Use this checklist to make sure you’ve covered everything required to set up your account as a Iowa employer so OnPay can accurately file and pay taxes on your behalf:
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✔ |
To do: |
What is this? |
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Make sure your business is registered with the Iowa Department of Revenue |
Allows your business to file and pay taxes in Iowa |
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Make sure your business is registered with the Iowa Workforce Development |
Allows your business to pay required unemployment insurance in Iowa |
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Provide OnPay with your Iowa Withholding Permit Number |
The 9-digit permit number issued by the Iowa Department of Revenue |
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Provide OnPay with your Iowa Unemployment Insurance (UI) Account Number |
A 6-digit number unique to your account with the Iowa Workforce Development |
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Provide OnPay with your Iowa Unemployment Contribution Rate |
A tax rate you receive annually from the Iowa Workforce Development |
What state and local taxes and filings OnPay handles for Iowa employers
OnPay handles the filing of all state and local taxes for businesses in Iowa, including:
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Type of Tax |
Form ID |
Form Name |
Frequency |
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Withholding |
Form 44-105 |
Withholding Payment Voucher |
Monthly |
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Form 44-095 |
Iowa Withholding Tax Quarterly Return |
Quarterly |
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Form 44-007 |
Verified Summary of Payments (VSP) Report |
Annual |
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State W-2 |
Wage and Tax Statement |
Annual |
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Unemployment |
65-5300 |
Employer's Contribution and Payroll Report |
Quarterly |
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68-0434 |
Payment Voucher |
Quarterly |
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Other |
New Hire Report |
New Hire Report |
As required |
Where you can find the tax account numbers needed
If you are an existing employer who has previously run payroll in Iowa, you likely already have the IDs and online accounts needed for OnPay to process your tax filings.
If you are a new employer in Iowa, you will need to register your business with the Iowa Department of Revenue and Iowa Workforce Development. This must be completed for OnPay to be able to file and pay your Iowa taxes.
Iowa Withholding Permit Number and Business eFile Number
Existing Iowa Employer:
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You can find your Withholding 9-digit Permit Number on notices received from the Iowa Department of Revenue.
- All permits issued after November 15, 2021, will have a 9-digit number. The Department recommends using the 9-digit number when possible. 12-digit numbers were assigned to permits issued before November 15, 2021. As part of the Department's efforts to modernize technology, new 9-digit permit numbers were assigned as accounts were migrated into GovConnectIowa.
- If you cannot find this number, please call the agency at 515-281-3114 or 800-367-3388.
New Iowa Employer: Register with the Iowa Department of Revenue
- Register online with the Iowa Department of Revenue.
- You will receive your Withholding Permit Number and Filing Frequency immediately after completing the online registration.
Unemployment Insurance (UI) Account Number and Contribution Rate
Existing Iowa Employer:
- You can find your UI Account Number on any previous Notice of Unemployment Insurance Contribution Rate from Iowa Workforce Development.
- Your Contribution Rate can be found on the annual Unemployment Insurance Contribution Rate Notice mailed to you each year by Iowa Workforce Development.
- If you cannot find these numbers, please contact the agency at 888-848-7442.
New Iowa Employer: Register with the Iowa Workforce Development
- Register online with Iowa Workforce Development.
- You'll receive your UI Account Number immediately after completing the online registration.
- New employers generally have a Contribution Rate of 1% (construction 7%), with a wage base of $36,100. If you are unsure of your rate, contact the agency at 888-848-7442 or by email at IWDuitax@iwd.iowa.gov.
Paying employees in other states?
If you operate in multiple states or just have employees working from home across a state line, it's important to file the correct state forms for those workers. See what forms we file in the states where you pay employees.
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