paid Treasury a dividend of $4.5 billion based on our net worth of $7.5 billion as of June 30, 2018, less the applicable capital reserve amount of $3.0 billion. Because we had a net worth of $7.0 billion as of September 30, 2018, we expect to pay Treasury a dividend of $4.0 billion for the fourth quarter of 2018 by December 31, 2018.
The liquidation preference of the senior preferred stock is subject to adjustment. The aggregate liquidation preference of the senior preferred stock was $123.8 billion as of September 30, 2018.
As a result of our issuance to Treasury of a warrant to purchase shares of Fannie Mae common stock equal to 79.9% of the total number of shares of Fannie Mae common stock, we and Treasury are deemed related parties. As of September 30, 2018, Treasury held an investment in our senior preferred stock with an aggregate liquidation preference of $123.8 billion. FHFA’s control of Fannie Mae and Freddie Mac has caused Fannie Mae, FHFA and Freddie Mac to be deemed related parties. In 2013, Fannie Mae and Freddie Mac established Common Securitization Solutions, LLC (“CSS”), a jointly owned limited liability company to operate a common securitization platform; therefore, CSS is deemed a related party.
Transactions with Treasury
Our administrative expenses were reduced by $6 million and $9 million for the three months ended September 30, 2018 and 2017, respectively, and $19 million and $32 million for the nine months ended September 30, 2018 and 2017, respectively, due to reimbursements from Treasury and Freddie Mac for expenses incurred as program administrator for Treasury’s Home Affordable Modification Program and other initiatives under Treasury’s Making Home Affordable Program.
During the three months ended September 30, 2018, we did not make any payments to the Internal Revenue Service (“IRS”), a bureau of Treasury. We made tax payments of $460 million during the nine months ended September 30, 2018. We made tax payments of $600 million and $1.7 billion during the three and nine months ended September 30, 2017, respectively.
In 2009, we entered into a memorandum of understanding with Treasury, FHFA and Freddie Mac pursuant to which we agreed to provide assistance to state and local housing finance agencies (“HFAs”) through certain programs, including a new issue bond (“NIB”) program. As of September 30, 2018, under the NIB program, Fannie Mae and Freddie Mac had $4.6 billion outstanding of pass-through securities backed by single-family and multifamily housing bonds issued by HFAs, which is less than 35% of the total original principal under the program, the amount of losses that Treasury would bear. Accordingly, we do not have a potential risk of loss under the NIB program.
The fee revenue and expense related to the TCCA are recorded in “Mortgage loans interest income” and “TCCA fees,” respectively, in our condensed consolidated statements of operations and comprehensive income. We recognized $576 million and $531 million in TCCA fees for the three months ended September 30, 2018 and 2017, respectively, and $1.7 billion and $1.6 billion for the nine months ended September 30, 2018 and 2017, respectively, of which $576 million had not been remitted to Treasury as of September 30, 2018.
We incurred expenses in connection with certain funding obligations under the Federal Housing Enterprises Financial Safety and Soundness Act of 1992, as amended by the Federal Housing Finance Regulatory Reform Act of 2008 (the “GSE Act”), a portion of which is attributable to Treasury’s Capital Magnet Fund. These expenses, recognized in “Other expenses, net” in our condensed consolidated statements of operations and comprehensive income, were measured as the product of 4.2 basis points and the unpaid principal balance of our total new business purchases for the respective period. We recognized $20 million and $16 million in “Other expenses, net” in connection with Treasury’s Capital Magnet Fund for the three months ended September 30,