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ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES | 12 Months Ended
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Sep. 30, 2021
ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES |
ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES | NOTE 10 – ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | September 30, 2021 |  | September 30, 2020
Accrued Expenses and Other Liabilities |  | ​ |  |  | ​ |
Accrued expense - other | ​ | $ | 2,051,696 | ​ | $ | 16,021,442
Accrued payroll | ​ |  | 4,586,057 | ​ |  | 3,771,874
Accrued interest | ​ |  | 12,489,012 | ​ |  | 2,358,273
Total | ​ | $ | 19,126,765 | ​ | $ | 22,151,589
​ Accrued expenses – other at September 30, 2020 includes obligations arising from the $13.6 million AirSign advertising contract and the $1.4 million RedRock Outdoor Advertising, Inc. contract. The Company entered into these agreements to promote its electric vehicle capabilities with various national sporting events and within the New York market. However, the marketing campaigns never materialized. During 2021, the Company received a release of liability from both AirSign, Inc. and RedRock Outdoor Advertising, Inc. Both liabilities, along with the associated deferred advertising, were derecognized during January 2021. Accrued payroll represents salaries and benefits that are owed to employees. More importantly, the payroll tax liabilities are reported within this account. Delinquent IRS and state tax liabilities on September 30, 2021, and September 30, 2020, are $3,904,720 and $3,987,596, respectively. These tax liabilities have priority liens over MTI assets due to nonpayment of tax debt. The lien protects the government’s interest in all MTI property, including real estate, personal property and financial assets. Refer to Note 17, Contingencies and Claims. Accrued interest relates to finance charges on debt financing and represents interest on loans, and convertible notes payable throughout 2021. Refer to Note 5, Debt.

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