US and Czech Republic: Competent Authority Arrangement (CAA) signed

US President Donald Trump has signed an executive order imposing sweeping tariffs on imported patented pharmaceuticals, with rates reaching 100% for most products not manufactured domestically. The measure, formalised through a proclamation issued

The US IRS has released Notice 2026-25, setting out updated limits on housing expenses for 2026 under Section 911 of the Internal Revenue Code. This notice provides adjustments to the limitation on housing expenses for purposes of section 911 of

The US Internal Revenue Service (IRS) issued a release on 9 April 2026, in which it reminded last-minute tax filers of the 15 April deadline.  The IRS encourages those who still need to file to use free tools and resources on IRS.gov to file on

US President Donald Trump announced on 8 April 2026, that the US will impose a 50% tariff on all goods imported from any country that supplies military weapons to Iran, despite losing his broadest tariff power earlier this year when the Supreme

The US Internal Revenue Service announced a major expansion of its Business Tax Account on 6 April 2026, making the online self-service platform available to partnerships, federal, state, and local governments, Indian tribal governments, and

The Department of the Treasury and the Internal Revenue Service issued guidance on 6 April 2026 to the Chief Executive Officers of any State, the District of Columbia, and US territories regarding the procedure for nominating population census