ALLIANT ENERGY CORP

NOTE 3. RECEIVABLES

Sales of Accounts Receivable -IPL maintains a Receivables Purchase and Sale Agreement (Receivables Agreement) whereby it may sell its customer accounts receivables, unbilled revenues and certain other accounts receivables to a third party through wholly-owned and consolidated special purpose entities. In March 2026, IPL amended and extended through March 2029 the purchase commitment from the third party to which it sells receivables. The transfers of receivables meet the criteria for sale accounting established by the transfer of financial assets accounting rules. Under the amended Receivables Agreement, the limit on cash proceeds fluctuates between $5 million and $180 million, which IPL may change periodically throughout the year. As of September 30, 2026, the limit on cash proceeds was $60 million and IPL hadno available capacity under its sales of accounts receivable program. IPL’s maximum and average outstanding aggregate cash proceeds (based on daily outstanding balances) related to the sales of accounts receivable program for the three and nine months ended September 30 were as follows (in millions):

The attributes of IPL’s receivables sold under the Receivables Agreement were as follows (in millions):

Additional attributes of IPL’s receivables sold under the Receivables Agreement for the three and nine months ended September 30 were as follows (in millions):