Amortization of intangibles from acquisitions. Amortization of intangibles from acquisitions increased by $5.3 million to $9.7 million from $4.4 million for the nine months ended September 30, 2022 and 2021, respectively, as a result of the Alaska Transaction which was completed on July 22, 2021.
Loss on disposition of long-lived assets. During the nine months ended September 30, 2022, we recorded a loss on the disposition of long-lived assets of $3.9 million. Of this amount, $2.1 million was incurred in our US Telecom segment relating to the disposal of certain assets while $1.0 million was incurred in our International Telecom segment as a result of the modification of agreements for the use of other certain assets, while the remaining amount pertains to the final settlement of the Vibrant Transaction within our Renewable Energy segment.
During the nine months ended September 30, 2021, we recorded a loss on the disposition of long-lived assets of $0.6 million, primarily related to the Vibrant Transaction, partially offset by gains within the US Telecom segment.
Interest income. Interest income represents interest earned on our cash, cash equivalents, restricted cash and short-term investment balances and were nominal amounts during both the nine months ended September 30, 2022 and 2021.
Interest expense. Interest expense increased to $13.1 million from $5.7 million for the nine months ended September 30, 2022 and 2021, respectively, as additional interest expense was incurred as a result of new borrowings under the 2019 CoBank Credit Facility, the Alaska Credit Facility and the Receivables Credit Facility as well as an increase in interest rates.
Other income (expenses). For the nine months ended September 30, 2022, other income (expenses) was $3.4 million of income primarily related to gains from our noncontrolling investments partially offset by increased expenses associated with certain employee benefit plans and losses on foreign currency transactions.
For the nine months ended September 30, 2021, other income (expense) was income of $1.9 million which was primarily related to gains from our noncontrolling investments partially offset by a net loss on foreign currency transactions.
Income taxes. Our effective tax rate for the nine months ended September 30, 2022 and 2021 was 21.5% and (98.8%), respectively.
We recorded an income tax benefit of $1.4 million in relation to a pretax loss of $6.4 million for the nine months ended September 30, 2022. The effective tax rate for the nine months ended September 30, 2022 was primarily impacted by the following items (i) the mix of income generated among the jurisdictions in which we operate, (ii) a $2.1 million net expense recognized discretely to record a valuation allowance on certain deferred tax assets that are not expected to be realizable based on the weight of positive and negative evidence and (iii) discrete items including a $3.3 million benefit from the reversal of an unrecognized tax position due to a statute of limitations expiration, and a $1.7 million expense for interest on unrecognized tax positions.
The effective tax rate for the nine months ended September 30, 2021 was primarily impacted by the following items: (i) the mix of income generated among the jurisdictions in which we operate, (ii) certain transactional charges incurred in connection with our recent acquisition that had no tax benefit, and (iii) discrete items including a $3.4 million benefit from the reversal of an unrecognized tax position due to statute expiration and a $1.5 million expense for interest on unrecognized tax positions.
Our effective tax rate is based upon estimated income before provision for income taxes for the year, composition of the income in different countries, and adjustments, if any, in the applicable quarterly periods for potential tax consequences, benefits and/or resolutions of tax contingencies. Our consolidated tax rate will continue to be impacted by any transactional or onetime items in the future and the mix of income in any given year generated among the jurisdictions in which we operate. While we believe we have adequately provided for all tax positions, amounts asserted by taxing authorities could materially differ from our accrued positions as a result of uncertain and complex applications of tax law and regulations. Additionally, the recognition and measurement of certain tax benefits include