What caused Danaher's income tax fluctuations?

Danaher's income tax provision decreased from 2022 to 2023 and from 2023 to 2024, primarily due to the use of tax attributes that were previously not deemed realizable. The effective income tax rate for the years ended December 31, 2024, 2023, and 2022, varied from the U.S. statutory federal income tax rate of 21.0%, with an increase (decrease) in tax rate resulting from non-U.S. tax rates, tax exemptions, and deductions. The company's income tax expense (benefit) pertaining to taxable income (loss) from continuing operations showed an increase from 2022 to 2023 but then decreased significantly from 2023 to 2024. |code|Ticker|Name|Date|Income Taxes|Income Taxes YoY|market_code| |---|---|---|---|---|---|---| |DHR|DHR.N|Danaher|2024 Q1|1.83E8|-35.3356890459364|169| |DHR|DHR.N|Danaher|2024 Q2|1.76E8|-20.72072072072072|169| |DHR|DHR.N|Danaher|2024 Q3|1.59E8|-23.18840579710145|169| |DHR|DHR.N|Danaher|2024 Q4|2.29E8|106.30630630630631|169| These fluctuations in income tax are likely due to changes in the company's operations, investments, and tax planning strategies over the period. The company's effective income tax rate and the use of tax attributes indicate that the tax provision is influenced by both domestic and international tax liabilities, as well as the realization of tax losses and credits.