To sign up for Square’s online payroll services in Iowa, you must be registered with the Iowa Department of Revenue (DOR) and Iowa Workforce Development so we can pay and file your state taxes.

Agency Required Tax Information Format
Iowa Department of Revenue (DOR) Iowa Withholding Permit Number 00-0000000-000 (12 digits)
Iowa Business eFile Number 00000000 (8 digits)
Iowa Filing Frequency Semi-Monthly, Monthly, or Quarterly
Iowa Workforce Development Iowa UI Account Number 00000000 (8 digits)
Iowa Contribution Rate X%

Iowa New Employer Registration

Iowa Withholding Permit Number, Business eFile Number, and Filing Frequency

  1. Register online as a new business.
  2. You will receive your Withholding Permit Number, Business eFile Number, and Filing Frequency immediately after completing the registration online.

Iowa UI Account Number

  1. Register online as a new business.
  2. You will receive your UI account number immediately after completing the registration online.

Iowa Unemployment Insurance Contribution Rate

Most new employers are assigned a Contribution Rate of 1%. For more information, contact the agency at 888-848-7442 or by email at IWDuitax@iwd.iowa.gov.

Find Your Iowa Tax ID Numbers and Rates

Iowa Withholding Permit Number, Business eFile Number, and Filing Frequency

  • Look these up online or on previous correspondence from the IA Department of Revenue.
  • If you’re unsure, contact the agency at 515-281-3114 or 800-367-3388.

Iowa UI Account Number

  • Look this up online or on any previous Notice of Unemployment Insurance Contribution Rate from IA Workforce Development.
  • If you’re unsure, contact the agency at 888-848-7442.

Iowa Contribution Rate

  • Look this up online or on the Notice of Unemployment Insurance Contribution Rate mailed by IA Workforce Development each year.
  • If you’re unsure, contact the agency at 888-848-7442.

Iowa Payroll Tax Details

Square Payroll processes the following per the frequency below to the listed state agencies:

Agency Filing Frequency
Iowa Department of Revenue (DOR) Wage and Tax Statement (W-2) Annually
Annual Verified Summary Report Annually
Withholding Quarterly Tax Return Quarterly
Withholding Tax Payment Voucher Semi-Monthly/Monthly
Withholding Tax Payment After Every Pay Run
Iowa Workforce Development Unemployment Insurance Payment Quarterly
Employer’s Contribution & Payroll Report (IA 65-5300) Quarterly
Iowa Department of Human Services (DHS) New Hire Reporting As Needed

How to Find Iowa Reporting Unit Numbers

Iowa employers must assign a Reporting Unit Number to each employee when adding them to Square Payroll. This is required because Iowa Workforce Development requires us to include each employee’s Reporting Unit Number in the unemployment insurance (UI) tax filing (Form IA 65-5300) due each quarter.

You can find all active Reporting Unit Numbers for your business in My Iowa UI:

  1. Log in to My Iowa UI.
  2. Click Reporting Units > Active Reporting Units.

If you’re unable to locate this, please contact Iowa Workforce Development directly at 888-848-7442.

Still need help? Ask the community

Visit community forum