The UK Government has a new prime minister in Liz Truss and a new Chancellor in Kwasi Kwarteng.
They have been in power only for a matter of weeks - but they have already announced a massive round of tax cuts which will most benefit big companies and rich individuals.
Despite having no mandate from the public, Kwarteng has announced the biggest tax cuts since 1972.
But as the Scottish Government controls certain elements of taxation north of the Border, it means there could be substantial variation in what people pay in different parts of the UK.
John Swinney, the finance secretary, said Westminster was "borrowing to give tax cuts to the wealthy, lowering regulatory standards and inflating an already booming housing market".
He is due to set out Scottish tax rates for the year ahead in Feburary as part of the usual Holyrood budget process.
Income tax
One of Kwarteng's biggest announcement was the scrapping of the top rate of income tax. This means the wealthiest will pay a rate of just 40p instead of 45p.
But that doesn't apply in Scotland. Under rates set at the last Holyrood budget earlier this year, those earning over £150,000 pay 46p in the pound. Scots earning £43,663 to £150,000 will continue paying 41p.
Sean Cockburn, of the Chartered Institute of Taxation, said: "It raises the prospect that all Scottish taxpayers earning more than £14,732 will now pay more income tax compared to taxpayers in the rest of the UK.
"As an illustration, someone in Scotland earning £27,850 would have paid the same amount of tax as someone living in the rest of the UK this year. The changes announced by the Chancellor mean that from next year, they would pay £152.80 more."
National Insurance
The UK Government retains control of National Insurance (NI) meaning changes announced today by Kwarteng will apply in Scotland. A rise in NI contributions - announced previously by former chancellor Rishi Sunak - has been scrapped.
The UK Treasury says this means, from November onwards, more than 2.3 million workers in Scotland will see a cut in their National Insurance payments, worth an average of £285 a year.
Tax cuts that apply elsewhere in the UK will also see the Scottish Government receive more than £600 million over the three-year 2021 Spending Review period.
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