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Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019
Cash Flow from Operating Activities: |  |  |  |
Net income | [1] | $ 688,374 | $ 497,840 | $ 479,446
Reconciliation of net income to net cash provided by operating activities: |  |  |  |
Depreciation and amortization |  | 208,830 | 198,409 | 205,772
Amortization of debt issuance cost |  | 548 | 144 |
Equity-based compensation expense |  | 54,249 | 42,434 | 38,550
Gain from sale of a business |  | (226,410) |  |
Deferred income taxes |  | (50,605) | 30,239 | (13,950)
Loss from short-term interest-bearing investments |  | 1,726 | 0 | 737
Net changes in operating assets and liabilities, net of amounts acquired: |  |  |  |
Accounts receivable, net |  | (69,051) | 134,584 | 6,589
Prepaid expenses and other current assets |  | (17,041) | (10,815) | 25,907
Other noncurrent assets |  | (50,038) | (23,329) | (1,635)
Lease assets and liabilities, net |  | 9,630 | (7,881) |
Accounts payable, accrued expenses and accrued personnel |  | 122,224 | (190,354) | (60,042)
Deferred revenue |  | 193,655 | (15,184) | (37,855)
Income taxes payable, net |  | 26,814 | (9,281) | 6,025
Other noncurrent liabilities |  | 32,902 | 11,330 | 6,833
Net cash provided by operating activities |  | 925,807 | 658,136 | 656,377
Cash Flow from Investing Activities: |  |  |  |
Purchase of property and equipment, net | [2] | (210,438) | (205,510) | (128,086)
Proceeds from sale of short-term interest-bearing investments |  | 18,205 | 0 | 101,287
Purchase of short-term interest-bearing investments |  | (276,978) | (753) |
Net cash paid for business and intangible assets acquisitions |  | (142,697) | (249,358) | (60,572)
Net cash received from sale of a business |  | 288,990 |  |
Other |  | (6,082) | (6,104) | 615
Net cash used in investing activities |  | (329,000) | (461,725) | (86,756)
Cash Flow from Financing Activities: |  |  |  |
Borrowings under financing arrangements |  | 0 | 450,000 |
Payments under financing arrangements |  | (100,000) | (350,000) |
Proceeds from issuance of debt, net |  | 0 | 643,919 |
Repurchase of shares |  | (679,996) | (360,912) | (398,057)
Proceeds from employee stock option exercises |  | 89,056 | 97,850 | 41,483
Payments of dividends |  | (177,472) | (164,061) | (147,616)
Investment by noncontrolling interests, net | [2] | 0 | 0 | (4,776)
Payment of contingent consideration from a business acquisition |  | (2,519) | (1,411) | (7,470)
Other |  |  | (240) | (336)
Net cash (used in) provided by financing activities |  | (870,931) | 315,145 | (516,772)
Net (decrease) increase in cash and cash equivalents |  | (274,124) | 511,556 | 52,849
Cash and cash equivalents at beginning of year |  | 983,188 | 471,632 | 418,783
Cash and cash equivalents at end of year |  | 709,064 | 983,188 | 471,632
Cash paid for: |  |  |  |
Income taxes, net of refunds |  | 146,442 | 45,398 | 75,790
Interest | [3] | $ 19,371 | $ 5,392 | $ 7,348
[1] | In fiscal years 2021, 2020 and 2019, all of the Company’s net income is attributable to Amdocs Limited as the net income attributable to the Non-controlling interests is negligible.
[2] | The amounts under “Purchase of property and equipment, net”, include proceeds from sale of property and equipment of $328, $194, and $151 for the year ended September 30, 2021, 2020 and 2019, respectively, and proceeds of $9,676 relating to refund of betterment levy for the year ended September 30, 2019 ($4,776 of which was a refund to the noncontrolling interest).
[3] | The amounts under “Interest” include payments of interest to financial institution, tax authorities and other.

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