8. DEBT

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Our outstanding debt, net of debt issuance costs, consisted of the following (dollars in millions):

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Direct and Subsidiary Debt

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Huntsman Corporation’s direct debt and guarantee obligations consist of a guarantee of certain indebtedness incurred from time to time to finance certain insurance premiums. Substantially all of our other debt, including the facilities described below, has been incurred by our subsidiaries (primarily Huntsman International). Huntsman Corporation is not a guarantor of such subsidiary debt.

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Certain of our subsidiaries have third-party debt agreements that contain certain restrictions with regard to dividends, distributions, loans or advances. In certain circumstances, the consent of a third party would be required prior to the transfer of any cash or assets from these subsidiaries to us.

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Debt Issuance Costs

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We record debt issuance costs related to a debt liability on the balance sheet as a reduction to the face amount of that debt liability. For June 30, 2021 and December 31, 2020, the amount of debt issuance costs directly reducing the debt liability was $10 million and $9 million, respectively. We record the amortization of debt issuance costs as interest expense.

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Revolving Credit Facility

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As of June 30, 2021, our $1.2 billion senior unsecured revolving credit facility (“Revolving Credit Facility”) was as follows (monetary amounts in millions):

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A/R Programs

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Our A/R Programs are structured so that we transfer certain of our trade receivables to the U.S. special purpose entity (“U.S. SPE”) and the European special purpose entity (“EU SPE”) in transactions intended to be true sales or true contributions. The receivables collateralize debt incurred by the U.S. SPE and the EU SPE.

Information regarding our A/R Programs as of June 30, 2021 was as follows (monetary amounts in millions):

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As of June 30, 2021 and December 31, 2020, $278 million and $198 million, respectively, of accounts receivable were pledged as collateral under our A/R Programs.

On July 1, 2021, we entered into amendments to our A/R Programs that, among other things, extended the respective scheduled termination dates of our A/R Programs to July 2024.

Senior Notes

On January 15, 2021, Huntsman International redeemed in full €445 million (approximately $541 million) in aggregate principal amount of our 5.125% senior notes due 2021 (“2021 Senior Notes”) at the redemption price equal to 100% of the principal amount of the notes, plus accrued and unpaid interest to, but not including, the redemption date. In connection with this redemption, we incurred an incremental cash tax liability of approximately $15 million in the first quarter of 2021 related to foreign currency exchange gains.

On May 26, 2021, Huntsman International completed a $400 million offering of its 2031 Senior Notes. On June 23, 2021, Huntsman International applied the net proceeds from the offering, along with cash on hand, to redeem in full $400 million in aggregate principal amount of its 2022 Senior Notes and to pay accrued but unpaid interest of approximately $2 million. In addition, we paid redemption premiums and related fees and expenses of approximately $25 million and recognized a corresponding loss on early extinguishment of debt of $26 million in the second quarter of 2021.

The 2031 Senior Notes bear interest at 2.95% per year, payable semi‑annually on June 15 and December 15 of each year, and will mature on June 15, 2031. Huntsman International may redeem the 2031 Senior Notes in whole or in part at any time prior to March 15, 2031 at a price equal to 100% of the principal amount thereof plus a “make‑whole” premium as of, and accrued and unpaid interest, if any, to, but not including, the date of redemption. Huntsman International may redeem the 2031 Senior Notes at any time in whole or from time to time in part, on or after March 15, 2031 at a price equal to 100% of the principal amount thereof plus accrued and unpaid interest, if any, to, but not including, the date of redemption. ​

Note Payable from Huntsman International to Huntsman Corporation

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During the first quarter of 2020, our intercompany loan of $380 million to our subsidiary Huntsman International was repaid to us in full.

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Compliance with Covenants

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We believe that we are in compliance with the covenants contained in the agreements governing our material debt instruments, including our Revolving Credit Facility, our A/R Programs and our senior notes.​