The amortization of deferred financing costs caused interest expense to increase $0.1 million and $0.3 million in the second quarter and first six months of 2024 as compared to the same periods in 2023, respectively, due to costs incurred on our third term loan.
Capitalized interest caused interest expense to decrease $0.2 million for both the second quarter and first six months of 2024 as compared to the same periods in 2023. During the second quarter of 2024, we capitalized $0.2 million of interest expense related to the extensive renovation work at The Confidante Miami Beach as it transitions to Andaz Miami Beach.
Our weighted average interest rate per annum, including our variable rate debt obligations and excluding capitalized interest, was approximately 5.8% and 5.9% at June 30, 2024 and 2023, respectively. Approximately 51.1% and 51.2% of our outstanding notes payable had fixed interest rates or had been swapped to fixed interest rates at June 30, 2024 and 2023, respectively.
Gain on sale of assets, net. Gain on sale of assets, net totaled zero and $0.5 million for the second quarter and first six months of 2024, respectively, and zero for both the second quarter and first six months of 2023. In the first quarter of 2024, we recognized an additional $0.5 million net gain related to a contingency resolution at a hotel sold in a prior year.
Gain on extinguishment of debt. Gain on extinguishment of debt totaled $38,000 and $12,000 for the second quarters of 2024 and 2023, respectively, both of which were related to potential employee-related obligations held in escrow associated with our assignment of a hotel to the hotel’s mortgage holder in 2020. In the second quarter of 2024, the escrow agreement was terminated and we recorded a gain of $38,000 due to the release of the remaining potential employee-related obligations in conjunction with the termination. In the second quarter of 2023, we recorded a gain of $12,000 associated with reassessments of the remaining potential employee-related obligations held in escrow.
For the first six months of 2024 and 2023, gain on extinguishment of debt totaled $0.1 million and $9.9 million, respectively. During the first six months of 2024, we recognized $21,000 due to reassessments of the remaining potential employee-related obligations held in escrow, and $38,000 due to the termination of the escrow agreement as noted above in the discussion regarding the second quarter of 2024. During the first six months of 2023 we recognized a gain of $9.9 million, comprised of $9.8 million from the relief of the majority of the potential employee-related obligations, with the funds released to us from escrow, and $0.1 million due to reassessments of the remaining potential employee-related obligations held in escrow.
Income tax (provision) benefit, net. We lease our hotels to the TRS Lessee and its subsidiaries, which are subject to federal and state income taxes. In addition, we and the Operating Partnership may also be subject to various state and local income taxes.
In the second quarter and first six months of 2024, we recognized a current income tax provision of $0.3 million and a net current income tax benefit of $0.6 million, respectively, resulting from current state and federal income tax expenses, net of any refunds.
In the second quarter and first six months of 2023, we recognized current income tax provisions of $0.8 million and $1.2 million, respectively, resulting from current state and federal income tax expenses.
Preferred stock dividends. Preferred stock dividends were incurred as follows (in thousands):
| | | | | | | | | | | | | |
| | Three Months Ended June 30, | | Six Months Ended June 30, | |
| | 2024 | | 2023 | | 2024 | | 2023 | |
Series G preferred stock | | $ | 497 | | $ | 582 | | $ | 994 | | $ | 1,164 | |
Series H preferred stock | | | 1,761 | | | 1,761 | | | 3,522 | | | 3,522 | |
Series I preferred stock | | | 1,425 | | | 1,425 | | | 2,850 | | | 2,850 | |
Total preferred stock dividends | | $ | 3,683 | | $ | 3,768 | | $ | 7,366 | | $ | 7,536 | |
The Series G preferred stock initially accrued dividends at a rate equal to the Montage Healdsburg’s annual net operating income yield on our total investment in the resort. In January 2024, the annual dividend rate increased to the greater of 3.0% or the rate equal to the Montage Healdsburg’s annual net operating income yield on our total investment in the resort. Beginning with the third quarter of 2024, the annual dividend rate will increase to the greater of 4.5% or the rate equal to the Montage Healdsburg’s annual net operating income yield on our total investment in the resort.
Non-GAAP Financial Measures. We use the following “non-GAAP financial measures” that we believe are useful to investors as key supplemental measures of our operating performance: EBITDAre; Adjusted EBITDAre; FFO attributable to common stockholders; and Adjusted FFO attributable to common stockholders. These measures should not be considered in isolation or as a substitute for measures of performance in accordance with accounting principles generally accepted in the United States (“GAAP”). In addition, our calculation of these measures may not be comparable to other companies that do not define such terms exactly the same