Borrowings utilizing SOFR under the 2024 Credit Facility use Adjusted Term SOFR. The applicable interest rates on our borrowings under the 2024 Term Loan B, as amended, bear interest at either, the Adjusted Term SOFR, which is the rate per annum equal to Term SOFR plus a rate adjustment based on interest periods of one month, three months, six months and twelve months tenors equaling to approximately 0.11%, 0.26%, 0.43% and 0.72%, respectively, plus a margin of 6.75%, or the base rate, which represents the highest of the Federal Funds Rate plus 0.50%, one-month Adjusted Term SOFR plus 1.00%, and the prime rate quoted by The Wall Street Journal, plus a margin of 5.75%. The Adjusted Term SOFR is subject to a floor of 0.00% and the base rate is subject to a floor of 1.00%. The 2024 Term Loan B Facility matures upon the earlier of (i) April 12, 2029, or (ii) March 16, 2028 if the outstanding principal on the 2028 Convertible Notes, as defined below, exceeds $100.0 million and we exceed certain leverage ratios as of that date.
Depending on our total leverage ratio, borrowings under the 2024 Revolving Credit Facility bear interest at either the Adjusted Term SOFR plus a margin of between 5.50% and 6.50%, or the base rate plus a margin of between 4.50% and 5.50%. The 2024 Revolving Credit Facility matures upon the earlier of (i) April 12, 2028, or (ii) December 16, 2027 if the outstanding principal on the 2028 Convertible Notes, as defined below, exceeds $100.0 million and we exceed certain leverage ratios as of that date. We pay a commitment fee on the 2024 Revolving Credit Facility of, depending on our total leverage ratio, between 0.35% to 0.45% per annum on the undrawn portion of the 2024 Revolving Credit Facility.
The 2024 Credit Facility contains affirmative, negative and financial covenants customary for financings of this type, including, among other things, limitations or prohibitions on declaring and paying dividends and other distributions, redeeming and repurchasing certain other indebtedness, making loans and investments, incurring additional indebtedness, granting liens, and effecting mergers, asset sales and transactions with affiliates. In addition, the 2024 Credit Facility contains customary events of default. The 2024 Revolving Credit Facility requires us to maintain a maximum total leverage ratio of 4.50:1.00 through December 31, 2024, stepping down to 4.25:1.00 on March 31, 2025 and 4.00:1.00 at September 30, 2025 and thereafter. The financial covenants also include a maximum first lien net leverage ratio of 2.50:1.00, a minimum fixed charge coverage ratio of 2.00:1.00, and a minimum liquidity of $200 million of revolver availability and accessible cash. As of March 31, 2026 and December 31, 2025, we were in compliance with its financial covenants under the 2024 Credit Facility.
We are permitted to make voluntary prepayments, subject to the premiums as discussed above. These prepayments, if any, will be applied against remaining quarterly installments owed under the 2024 Term Loan B in order of maturity with the remaining principal due upon maturity, unless directed otherwise by us. Pursuant to the terms of the 2018 Credit Facility excess cash flow clause and based on the 2023 excess cash flow calculation and consolidated leverage ratio as of December 31, 2023, as described and defined under the terms of the 2018 Credit Facility, we made a $66.3 million mandatory prepayment towards the 2018 Term Loan B during the first quarter of 2024.
During the three months ended March 31, 2026, we borrowed an aggregate amount of $67.0 million under the 2024 Credit Facility, all of which was under the 2024 Revolving Credit Facility, and repaid a total amount of $72.0 million on amounts outstanding under the 2024 Credit Facility, which included $67.0 million of repayments on amounts outstanding under the 2024 Revolving Credit Facility. During the three months ended March 31, 2025, we borrowed an aggregate amount of $65.0 million under the 2024 Credit Facility, all of which was under the 2024 Revolving Credit Facility, and repaid a total amount of $70.0 million on amounts outstanding under the 2024 Credit Facility, which included $65.0 million of repayments on amounts outstanding under the 2024 Revolving Credit Facility. As of March 31, 2026 and December 31, 2025, the U.S. dollar amount outstanding under the 2024 Credit Facility was $365.0 million and $370.0 million, respectively. Of the $365.0 million outstanding under the 2024 Credit Facility as of March 31, 2026, $365.0 million was outstanding under the 2024 Term Loan B. Of the $370.0 million outstanding under the 2024 Credit Facility as of December 31, 2025, $370.0 million was outstanding under the 2024 Term Loan B. There were no borrowings outstanding under the 2024 Revolving Credit Facility as of March 31, 2026 and December 31, 2025. In addition, as of both March 31, 2026 and December 31, 2025, we had an issued but undrawn letter of credit against the 2024 Revolving Credit Facility of approximately $45 million which reduced our remaining available borrowing capacity under the 2024 Revolving Credit Facility. As a result of the issued but undrawn letter of credit, as of both March 31, 2026 and December 31, 2025, the remaining available borrowing capacity under the 2024 Revolving Credit Facility, was approximately $355 million. There were no outstanding foreign currency borrowings under the 2024 Credit Facility as of March 31, 2026 and December 31, 2025. As of March 31, 2026 and December 31, 2025, the weighted-average interest rate for borrowings under the 2024 Credit Facility was 10.63% and 11.64%, respectively.
See Note 4, Long-Term Debt, and Note 15, Subsequent Events, to the Condensed Consolidated Financial Statements included in Part I, Item 1, Financial Statements, of this Quarterly Report on Form 10-Q for a further discussion on the 2024 Credit Facility and the refinancing thereof.