generally had a term of 12 months and were required to be repaid at the earlier of i) the sale of the related property, or ii) the stated maturity date. The notes could be prepaid at any time prior to maturity without penalty, and the maturity date could be extended upon the mutual agreement of the parties. During the year ended December 31, 2016, the Company incurred $332,576 of interest expense in connection with the notes. In May 2016, all outstanding notes due to CFIF, with an aggregate outstanding principal balance of $8,227,862, were refinanced and transferred to Caliber Fixed Income Fund II, LLC (“CFIF II”), an affiliated entity, which is managed by the Company. As of December 31, 2016, all amounts due to CFIF had been repaid in full.
CFIF II
Beginning in July 2015, the Company entered into multiple promissory notes with CFIF II, a related party, for the purpose of financing the purchase, development, and renovation of residential and commercial properties. The notes have an interest rate of 11% per annum and require monthly interest-only payments until maturity. The notes generally have a term of 12 months and are required to be repaid at the earlier of i) the sale of the related property, or ii) the stated maturity date. The notes can be prepaid at any time prior to maturity without penalty and the maturity date can be extended upon the mutual agreement of the parties. During the years ended December 31, 2017 and 2016, the Company incurred $1,151,123 and $1,114,830, respectively, of interest expense in connection with the notes. The interest payable as of December 31, 2017 and 2016, was $1,163,166 and $327,348, respectively. At December 31, 2017 and 2016, the total outstanding principal balance of the notes was $8,687,000 and $13,043,000, respectively.
CDIF
In January 2016, the Company, through one of its consolidated private equity real estate funds, entered into an unsecured promissory note with CDIF, which allows the fund to borrow up to $2,000,000. The note matures in January 2018 and has an interest rate of 12.0% per annum. No payments are required prior to the maturity of the note. The note may be prepaid in whole, or in part, without penalty. In June 2016, $500,000 of the principal outstanding in connection with the note was converted to an equity investment in the fund. During the years ended December 31, 2017 and 2016, the Company incurred $23,421 and $45,928 of interest expense in connection with the note, respectively. The interest payable as of December 31, 2017 and 2016, was $0 and $45,928, respectively. At December 31, 2017 and 2016, the outstanding principal balance of the note was $89,978 and $210,629, respectively.
In April 2016, the Company, through one of its consolidated private equity real estate funds, entered into an unsecured promissory note with CDIF, which allowed the Company to borrow up to $3,000,000. The note had a stated maturity of April 2018 and had an interest rate of 12.0% per annum. No payments were required prior to the maturity of the note. In November 2016, $1,500,000 of the principal outstanding in connection with the note was converted to an equity investment in the fund. An additional $400,000 of outstanding principal was settled through the issuance of Class C member interest to an affiliate of CDIF. During the years ended December 31, 2017 and 2016, the Company incurred $23,721 and $81,437 of interest expense in connection with the note, respectively. The interest payable as of December 31, 2016, was $81,437. At December 31, 2016, the outstanding principal balance of the note was $353,241. The note and all interest due was paid in full in 2017.
CDOF II
In August 2017, the Company, through one of its consolidated private equity real estate funds, entered into an unsecured promissory note with CDOF II, which allows the fund to borrow up to $165,000. The note matures in August 2018 and has an interest rate of 12.0% per annum. No payments are required prior to the maturity of the note. The note may be prepaid in whole, or in part, without penalty. During the year ended December 31, 2017, the Company incurred $7,920 of interest expense in connection with the note. The interest payable as of December 31, 2017, was $7,920. At December 31, 2017, the outstanding principal balance of the note was $165,000.
In March 2013, the Company entered into a promissory note in the amount of $185,000 with a former member of executive management. The unpaid principal balance accrues interest at a rate of 0.87% per annum. The note matures on December 31, 2018; however, the maturity date may be extended until