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Income Taxes
12 Months Ended
May 31, 2020
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
Income before income taxes for continuing operations consists of the following components for the fiscal years ended May 31:
(In thousands)202020192018
U.S. operations$1,035,902  $1,061,505  $798,215  
Foreign operations22,389  40,894  42,786  
$1,058,291  $1,102,399  $841,001  

Income tax expense (benefit) for continuing operations consists of the following components for the fiscal years ended May 31:
(In thousands)202020192018
Current:   
Federal$153,736  $134,174  $124,861  
State and local34,502  40,949  32,322  
Foreign6,985  9,882  15,103  
195,223  185,005  172,286  
Deferred(13,292) 34,759  (115,217) 
$181,931  $219,764  $57,069  

Reconciliation of income tax expense for continuing operations using the statutory rate and actual income tax expense is as follows for the fiscal years ended May 31:
(In thousands)202020192018
Income taxes at the U.S. federal statutory rate$222,258  $231,503  $245,322  
Permanent differences (1)
(67,075) (51,201) (47,137) 
State and local income taxes, net of federal benefit25,294  31,687  24,783  
Other (2)
1,454  6,506  (4,451) 
Impact of the Tax Cuts and Jobs Act:
Deemed repatriation of non-U.S. earnings, net of foreign
tax credits and other (collectively, transition tax)
—  153  9,768  
Non-U.S. withholding taxes related to certain non-U.S.
earnings subject to repatriation
—  690  4,363  
Remeasurement of U.S. net deferred tax liabilities from
35% to 21%
—  426  (175,579) 
$181,931  $219,764  $57,069  
(1) Primarily consists of the excess tax benefits related to stock-based compensation.

(2) Primarily consists of adjustments for uncertain tax positions, tax credits and return to provision adjustments.
The components of deferred income taxes included on the consolidated balance sheets are as follows at May 31:
(In thousands)20202019
Deferred tax assets:  
Allowance for doubtful accounts$14,718  $9,495  
Inventory obsolescence13,744  9,257  
Insurance reserves45,197  45,339  
Stock-based compensation78,802  77,697  
Net operating loss and foreign related carry-forwards (1)
7,657  9,109  
Treasury locks39,046  5,806  
Operating lease liabilities42,191  —  
Deferred compensation and other73,562  48,922  
314,917  205,625  
Valuation allowance(6,411) (7,308) 
308,506  198,317  
Deferred tax liabilities:  
Uniform and other rental items in service189,787  194,939  
Property and equipment177,664  159,186  
Service contracts and other intangible assets207,610  210,531  
Capitalized contract costs77,741  70,228  
Operating lease right-of-use assets42,191  —  
State taxes and other2,092  1,612  
697,085  636,496  
Net deferred tax liability$388,579  $438,179  
(1) The majority of these net operating losses and foreign related carryforwards have a five-year expiration period and generally expire in fiscal year 2021 to 2025.

Although realization is not assured, management has evaluated its deferred tax assets to determine whether a valuation allowance is required or should be adjusted. This evaluation considers, among other items, the nature, frequency and amount of recent losses, reversal periods of taxable temporary differences, duration of statutory periods and tax planning strategies. As a result of this analysis, management believes it is more likely than not that the recorded deferred tax assets, net of valuation allowances, will be realized.

The progression of the valuation allowance is as follows at May 31:
(In thousands)20202019
Balance at beginning of year$(7,308) $(11,302) 
Subtractions (1)
897  3,994  
Balance at end of year$(6,411) $(7,308) 
(1)  Primarily related to expiration of net operating loss and foreign related carryforwards.

Income taxes paid were $160.3 million, $173.2 million and $175.3 million for the fiscal years ended May 31, 2020, 2019 and 2018, respectively.

As of May 31, 2020 and 2019, there was $35.9 million and $37.3 million, respectively, in total unrecognized tax benefits, which, if recognized, would favorably impact Cintas' effective tax rate. Cintas recognizes interest accrued related to unrecognized tax benefits and penalties in income tax expense in the consolidated statements of income, which is consistent with the recognition of these items in prior reporting periods. The total amount accrued for interest and penalties as of May 31, 2020 and 2019, was $3.7 million and $2.8 million, respectively. Cintas records this tax liability in long-term accrued liabilities on the consolidated balance sheets, as appropriate.
A reconciliation of the beginning and ending amount of the gross unrecognized tax benefits (exclusive of interest and penalties) is as follows:
(In thousands) 
Balance at June 1, 2018$36,647  
Additions for tax positions of the current year3,641  
Additions for tax positions of prior years10,239  
Statute expirations(1,812) 
Balance at May 31, 201948,715  
Additions for tax positions of the current year3,976  
Additions for tax positions of prior years4,325  
Settlements(5,473) 
Statute expirations(6,873) 
Balance at May 31, 2020$44,670  

The majority of Cintas' operations are in North America. Cintas is required to file federal income tax returns, as well as state income tax returns in a majority of the domestic states and also in certain Canadian provinces. At times, Cintas is subject to audits in these jurisdictions. The audits, by nature, are sometimes complex and can require several years to resolve. The final resolution of any such tax audit could result in either a reduction in Cintas' accruals or an increase in its income tax provision, either of which could have an impact on the consolidated results of operation in any given period.

All U.S. federal income tax returns are closed to audit through fiscal 2016. Cintas is currently in various audits in certain foreign jurisdictions and certain domestic states. The years under foreign and domestic state audits cover fiscal years back to 2014. Based on the resolution of the various audits and other potential regulatory developments, it is expected that the balance of unrecognized tax benefits will not change for the fiscal year ending May 31, 2021.

Foreign Withholding Tax
The Company asserts that all foreign earnings will be indefinitely reinvested, with the exception of certain foreign investments in which earnings and cash generation are in excess of local needs. With the passage of tax reform in the U.S., dividends of earnings from non-US operations are generally no longer subject to US income tax. Cintas continues to analyze the estimated impact of the non-US income and withholding tax liabilities based on the source of these earnings, as well as the expected means through which those earnings may be taxed; however, the unrecorded tax is immaterial.