The IUB invoices companies for two types of assessments:

  • Industry direct assessments, which reflect IUB or Office of Consumer Advocate (OCA) staff time directly related to a docket or project for a specific company.
  • Remainder assessments, which are costs for staff time that is related to work within an industry type but not billable to a specific docket.

Iowa Code ยง 476.10 authorizes the IUB to invoice and collect remainder and industry direct assessments based on each company's net assessable revenues as reported in its most recent Annual Report filing. The net assessable revenues used to compute the fiscal year remainder assessments are listed on an invoice sent to each utility. Direct assessments are invoiced quarterly and remainder assessments are invoiced annually.

IUB Billing Events

FY24 Q1 Direct 7/1/2023-09/30/2023  All11/20/202312/20/2023 
FY24 Q2 Direct10/1/2023-12/31/2023 All 02/01/2024 03/01/2024 
CY23 Dual Party Relay Assessment 1/1/2023-12/31/2023 Telecom  05/01/2024* 06/01/2024*
FY24 Q3 Direct1/1/2024-3/31/2024 All 05/15/2024* 06/15/2024*
FY24 Q4 Direct4/1/2024-6/30/2024 All 08/01/2024* 09/01/2024*
FY24 Remainder7/1/2023-6/30/2024 All 11/01/2024* 12/01/2024*


Billing factors

To determine the billable amount for invoices, the IUB uses a billing rate that is evaluated each year. The billing rate is the hourly rate determined by staff's job classification and is designed to recover IUBโ€™s total budgeted expenses less receipts from other sources (such as federal support, intrastate receipts, fees, licenses or permits). IUB and OCA staff track their time on an hourly basis for dockets and other projects, and the billing rate is calculated using actual salary and benefit data. Overhead costs are calculated and included in the billing rate.

The billing rate is set using a base rate times a factor.  The IUB FY2024 remainder/industry direct assessment rates by industry type are:

  • Rate-Regulated Companies

    Electric Utilities โ€” $0.000468477 or $0.47 Per $1,000 of Assessable Revenue
    Gas Utilities โ€” $0.000994295 or $0.99 Per $1,000 of Assessable Revenue
    Water Utilities โ€” $0.0001911228 or $0.19 Per $1,000 of Assessable Revenue
    Telecom Service Providers โ€” $0.002654514 or $2.65 Per $1,000 of Assessable Revenues

  • Non-Rate-Regulated Companies

    Electric Utilities โ€” $0.0002342384 or $0.23 Per $1,000 of Assessable Revenue
    Gas Utilities โ€” $0.0004971473 or $0.50 Per $1,000 of Assessable Revenue
    Telecom Service Providers โ€” $0.0013272571 or $1.33 Per $1,000 of Assessable Revenue

Base Rate = Average Salary รท 1,700 Hours
Factor = FY Legislative Authorization amount as determined by Administration and Regulation Bill รท total direct billed salaries

For current calculations used, see this FY24 Billing Rates presentation.

Payment options

Companies may pay assessment invoices electronically or by check. To pay the invoice via credit card, debit card, or ACH debit, the company must first verify it does not have a debit block on its bank account, then contact its financial institution to allow the IUB's ACH company ID numbers (426004579Q and 426004579R) to bypass the block and debit the account.

Electronic payment may be made using the State of Iowa GovConnectIowa site. 

To pay by check, please include a copy of the invoice and mail to:

Iowa Utilities Board
ATTN: Accounting & Assessments
1375 E. Court Ave.
Des Moines, IA 50319-0069

Companies may file an objection to invoices or assessments by following IUB rules found at 199 Iowa Administrative Code 17.10.

For information or assistance, contact the IUB at 515-725-7300 or