Full coverage: Tax

Google’s Dublin subsidiaries may have just posted exceptional once-off Irish tax bills, but the Silicon Valley giant’s strategy is now to split international corporation tax between here and the US – as the Fitbit acquisition shows.

With the end of the double Irish scheme, many US tech firms have cut Caribbean subsidiaries out of their corporate structures to focus their tax advantage on Ireland. One of them has just gone back to Bermuda instead – via Dublin.

By locating intellectual property in Ireland, Twitter was planning to shrink taxable profits for 15 years. Now the social network is not so sure the green jersey scheme is going to deliver.

A major accountancy firm is on the hook for a €1.4 million tax bill after the Tax Appeals Commission ruled that its exam payments to trainees are taxable. Tax expert Eoin O'Shea examines what it means for other firms.

The US Treasury Secretary visited Dublin on Monday as her country entered the final stretch of a fraught congressional budget debate. Upcoming American legislation implementing the OECD-led global tax agreement is the piece of the puzzle with the most direct impact on multinationals operating in Ireland.

The US social network has written off most of the value it had booked for the intellectual property placed in its expanding Irish operation. What does the move mean for other multinationals using the popular green jersey tax structure?

Of the many transport situations where driving a car makes little sense, business trips are the most obvious. The tax treatment of expenses claims offers one of the many avenues needed to tackle the disproportionate cost of the drive-everywhere mindset.

Ireland is signing up to a global agreement that no large multinational should pay less than 15% in corporation tax anywhere. The structures used by firms here show that the calculation of the exact profit taxable at this rate matters a lot more than the headline figure.

The Irish obsession with the 12.5% corporation tax rate has already receded into the background of crunch global talks on the taxation of multinationals. Attempts to hammer out the details of a full deal have deep ramifications here and around the world.

A clinic owner claimed doctors and dental practitioners were contractors. Revenue recast them as employees. The subsequent dispute has far-reaching implications for medical and other professionals.