ANALOG DEVICES, INC. NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) Estimated future cash flows 12. Income Taxes Expected fiscal 2020 Company contributions and estimated future benefit payments are as follows: The Tax Cuts and Jobs Act of 2017 (Tax Legislation), enacted on December 22, 2017, contains significant changes to U.S. tax law, including lowering the U.S. corporate income tax rate to 21.0%, implementing a territorial tax system, and imposing a one-time tax on deemed repatriated earnings of foreign subsidiaries. As a result, the Tax Legislation reduced the U.S. statutory tax rate from 35.0% to 21.0%, effective January 1, 2018, which results in a blended statutory income tax rate for the Company of 23.4% for fiscal 2018. The Company's effective tax rate reflects the applicable tax rate in effect in the various tax jurisdictions around the world where the Company's income is earned. The reconciliation of income tax computed at the U.S. federal statutory rates to income tax expense for fiscal 2019, fiscal 2018 and fiscal 2017 is as follows: (1) Balances have been restated to reflect the adoption of ASU 2014-09. See Note 2a, Principles of Consolidation, in the Notes to Consolidated Financial Statements. 84 2019 2018 (1) 2017 (1) U.S. federal statutory tax rate 21.0  % 23.4  % 35.0  % Income tax provision reconciliation: Tax at statutory rate: 312,003  $ 387,343  $ 327,161  Net foreign income subject to lower tax rate (242,893) (420,756) (395,800) State income taxes, net of federal benefit (31,265) 4,428  (7,239) Valuation allowance 34,069  2,232  (7,778) Federal research and development tax credits (50,769) (33,602) (16,475) Change in uncertain tax positions 7,233  (32,945) (51,088) Amortization of purchased intangibles 111,547  213,198  159,466  Acquisition and integration costs —  —  109,040  Taxes attributable to the Tax Cuts and Jobs Act of 2017 (7,500) 56,608  —  U.S. effects of international operations 19,782  —  —  Windfalls (under ASU 2016-09) (28,677) (26,237) —  Other, net (813) (1,935) 12,081  Total income tax provision $ 122,717  $ 148,334  $ 129,368  Expected Company Contributions 2020 $ 7,565  Expected Benefit Payments 2021 $ 3,027  2022 $ 2,316  2023 $ 2,899  2024 $ 3,363  2024 $ 3,363  2025 through 2028 $ 25,159 