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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021
Operating Activities |  |  |
Net income | $ 17,273 | $ 14,957 | $ 12,311
Adjustments to reconcile net income to net cash provided by (used in) operating activities: |  |  |
Client incentives | 12,297 | 10,295 | 8,367
Share-based compensation | 765 | 602 | 542
Depreciation and amortization | 943 | 861 | 804
Deferred income taxes | (483) | (336) | 873
VE territory covered losses incurred | (136) | (43) | (147)
(Gains) losses on equity investments, net | 104 | 264 | (712)
Other | 14 | (94) | (109)
Change in operating assets and liabilities: |  |  |
Settlement receivable | (160) | (397) | (468)
Accounts receivable | (250) | (97) | (343)
Client incentives | (11,014) | (9,351) | (7,510)
Other assets | (24) | (666) | (147)
Accounts payable | 34 | 67 | 88
Settlement payable | (194) | 1,256 | 679
Accrued and other liabilities | 1,291 | 1,055 | 929
Accrued litigation | 295 | 476 | 70
Net cash provided by (used in) operating activities | 20,755 | 18,849 | 15,227
Investing Activities |  |  |
Purchases of property, equipment and technology | (1,059) | (970) | (705)
Investment securities: |  |  |
Purchases | (4,363) | (5,997) | (5,111)
Proceeds from maturities and sales | 3,160 | 4,585 | 5,701
Acquisitions, net of cash and restricted cash acquired | 0 | (1,948) | (75)
Purchases of other investments | (121) | (86) | (71)
Settlement of derivative instruments | 402 | 0 | 0
Other investing activities | (25) | 128 | 109
Net cash provided by (used in) investing activities | (2,006) | (4,288) | (152)
Financing Activities |  |  |
Repurchase of class A common stock | (12,101) | (11,589) | (8,676)
Repayments of debt | (2,250) | (1,000) | (3,000)
Dividends paid | (3,751) | (3,203) | (2,798)
Proceeds from issuance of senior notes | 0 | 3,218 | 0
Cash proceeds from issuance of class A common stock under equity plans | 260 | 196 | 208
Restricted stock and performance-based shares settled in cash for taxes | (130) | (120) | (144)
Other financing activities | 200 | (198) | 0
Net cash provided by (used in) financing activities | (17,772) | (12,696) | (14,410)
Effect of exchange rate changes on cash, cash equivalents, restricted cash and restricted cash equivalents | 636 | (1,287) | (37)
Increase (decrease) in cash, cash equivalents, restricted cash and restricted cash equivalents | 1,613 | 578 | 628
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of year | 20,377 | 19,799 | 19,171
Cash, cash equivalents, restricted cash and restricted cash equivalents at end of year | 21,990 | 20,377 | 19,799
Supplemental Disclosure |  |  |
Cash paid for income taxes, net | 3,433 | 3,741 | 3,012
Interest payments on debt | 617 | 607 | 643
Accruals related to purchases of property, equipment and technology | $ 96 | $ 56 | $ 41

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