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Income Taxes | 12 Months Ended
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Sep. 30, 2022
Income Tax Disclosure [Abstract] |
Income Taxes | Income Taxes The components of income before income taxes are presented below.
| 2022 |  | 2021 |  | 2020
| (in millions)
U.S. | $ | 81.6 |  |  | $ | 94.0 |  |  | $ | 89.7 |
Non-U.S. | 17.0 |  |  | 0.9 |  |  | 4.4 |
Income before income taxes | $ | 98.6 |  |  | $ | 94.9 |  |  | $ | 94.1 |
The Tax Cuts and Jobs Act (the “Act”) imposed a one-time transition tax on the undistributed, previously untaxed, post-1986 foreign “earnings and profits” as defined by the Internal Revenue Services (“IRS”) of certain United States-owned corporations. At September 30, 2022, the remaining balance of our transition obligation is $4.1 million, which will be paid annually through January 2026, as provided in the Act. Other than for Krausz’s investment in its United States subsidiary, we have not recorded income taxes for unrepatriated foreign earnings that may be subject to withholding tax or any outside cost basis differences inherent in our foreign subsidiaries, as these amounts continue to be indefinitely reinvested in foreign operations. We have a foreign tax credit carryforward of $4.5 million, for which we have recorded a valuation allowance as we do not expect to utilize it prior to expiration. The federal income tax returns for Mueller Water Products, Inc. are closed for years prior to 2018. We remain liable for any taxes related to U.S. Pipe income for periods prior to 2012 pursuant to the terms of the sale agreement with the purchaser of the segment. Our state income tax returns are generally closed for years prior to 2018, except with regard to our state net operating loss carryforwards. Our Canadian income tax returns are generally closed for years prior to 2015. We do not have any material unpaid assessments. The components of income tax expense are as follows:
| 2022 |  | 2021 |  | 2020
| (in millions)
Current: |  |  |  |  |
U.S. federal | $ | 19.5 |  |  | $ | 21.9 |  |  | $ | 10.9 |
U.S. state and local | 4.3 |  |  | 6.3 |  |  | 2.7 |
Non-U.S. | 1.7 |  |  | 1.6 |  |  | 1.3 |
Total current income tax expense | 25.5 |  |  | 29.8 |  |  | 14.9 |
Deferred: |  |  |  |  |
U.S. federal | (3.4) |  |  | (4.7) |  |  | 5.6 |
U.S. state and local | (0.9) |  |  | (1.3) |  |  | 2.0 |
Non-U.S. | 0.8 |  |  | 0.7 |  |  | (0.4) |
Total deferred income tax (benefit) expense | (3.5) |  |  | (5.3) |  |  | 7.2 |
Income tax expense | $ | 22.0 |  |  | $ | 24.5 |  |  | $ | 22.1 |
The reconciliation between income tax expense at the United States federal statutory income tax rate and reported income tax expense is presented below.
| 2022 |  | 2021 |  | 2020
| (in millions)
Expense at U.S. federal statutory income tax rate | $ | 20.7 |  |  | $ | 19.9 |  |  | $ | 19.8 |
Adjustments to reconcile to income tax expense: |  |  |  |  |
State income taxes, net of federal benefit | 2.6 |  |  | 3.1 |  |  | 3.3 |
Uncertain tax positions | — |  |  | 0.3 |  |  | 1.0 |
Nondeductible compensation | 0.9 |  |  | 0.6 |  |  | 0.6 |
Nondeductible expenses, other than compensation | 0.8 |  |  | 0.5 |  |  | 0.4 |
Valuation allowances | 1.0 |  |  | (0.4) |  |  | 0.1 |
Basis difference in foreign investment | 0.1 |  |  | 1.5 |  |  | 0.1 |
Foreign income taxes | (1.5) |  |  | (1.7) |  |  | (0.5) |
Excess tax benefits related to stock compensation | (0.1) |  |  | (0.2) |  |  | (0.5) |
Tax credits | (2.3) |  |  | (1.6) |  |  | (1.8) |
Other | (0.2) |  |  | 2.5 |  |  | (0.4) |
Income tax expense | $ | 22.0 |  |  | $ | 24.5 |  |  | $ | 22.1 |
The following table summarizes information concerning our gross unrecognized tax benefits.
| 2022 |  | 2021
| (in millions)
Balance at beginning of year | $ | 4.8 |  |  | $ | 4.5 |
Increase related to current year positions | 0.7 |  |  | 0.6 |
Decrease related to current year positions | (0.4) |  |  | — |
Decrease as a result of statute of limitations lapse | (0.3) |  |  | (0.3) |
Foreign currency exchange losses | (0.1) |  |  | — |
Balance at end of year | $ | 4.7 |  |  | $ | 4.8 |
Substantially all unrecognized tax benefits would, if recognized, impact the effective tax rate. We recognize interest related to uncertain tax positions as interest expense and recognize any penalties incurred as a component of selling, general and administrative expenses. At September 30, 2022 and 2021, we had $0.7 million and $0.6 million, respectively, of accrued interest expense related to unrecognized tax benefits. Deferred income tax balances are presented below.
| September 30,
| 2022 |  | 2021
| (in millions)
Deferred income tax assets: |  |  |
Accrued expenses | $ | 10.5 |  |  | $ | 12.7 |
Lease liabilities | 8.1 |  |  | 8.2 |
Inventories | 7.0 |  |  | 6.1 |
State net operating losses | 2.1 |  |  | 2.8 |
Net operating losses and credit carryovers | 12.9 |  |  | 14.8 |
Stock-based compensation | 4.1 |  |  | 3.8 |
Pension | 0.1 |  |  | — |
Other | 2.3 |  |  | 2.9 |
Total deferred income tax assets | 47.1 |  |  | 51.3 |
Valuation allowance | (13.2) |  |  | (13.6) |
Total deferred income tax assets, net of valuation allowance | 33.9 |  |  | 37.7 |
Deferred income tax liabilities: |  |  |
Intangible assets | 77.7 |  |  | 86.3 |
Lease assets | 7.4 |  |  | 7.6 |
Basis difference in foreign investment | 6.2 |  |  | 6.8 |
Pension | — |  |  | 3.9 |
Property, plant and equipment | 28.4 |  |  | 27.4 |
Other | 0.5 |  |  | 0.5 |
Total deferred income tax liabilities | 120.2 |  |  | 132.5 |
Net deferred income tax liabilities | $ | 86.3 |  |  | $ | 94.8 |
We reevaluate the need for a valuation allowance against our deferred tax assets each quarter considering results to date, projections of taxable income, tax planning strategies and reversing taxable temporary differences. Our state net operating loss carryforwards, which expire between the years 2024 and 2032, remain available to offset future taxable earnings.

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- Definition The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 21 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32857-109319 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 11.C) -URI https://asc.fasb.org/extlink&oid=122134291&loc=d3e330215-122817 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 17 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32809-109319 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I.5.Q1) -URI https://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 14 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32705-109319 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 270 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6424409&loc=d3e44925-109338 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -URI https://asc.fasb.org/topic&trid=2144680 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(2)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
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