Queen Camilla will not receive personal funding from Parliament to fund her official duties.
Prince Philip received an annual lump sum of £359,000 until his death.
This continued despite a change in the way the Royal Family’s activities were funded by the taxpayer.
However, a National Audit Office (NAO) report into the Royal household’s finances revealed that the cost of Camilla's activities is met via the Sovereign Grant.
PA
There is no additional financial input from the taxpayer.
On Friday, the UK’s independent public spending watchdog published its spending and accountability report.
It said: "Parliament provided Prince Phillip with a separate annuity worth £359,000 per annum."
The report added: "Queen Camilla will not receive a separate annuity and the Queen’s activities will be funded from the grant."
New legislation kept a provision for the Duke of Edinburgh, who retired in 2017 and died in 2021, to carry on receiving his annuity for his lifetime.
It comes as last month official figures showed more than £86m of taxpayers' money was spent to fund the Royal Family's formal duties - equivalent to £1.29 per person in the UK.
Buckingham Palace is in the middle of a major 10-year refit to update the heating, plumbing and electricity, which means the amount of taxpayers' money spent on the Royal Family is roughly an extra 10 per cent each year.
The Royal Household is not immune to the cost of living pressures affecting the population, and it was forced to dip into reserve funds to ensure the institution could function.
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The late Queen's Platinum Jubilee and Her Late Majesty's funeral cost a combined £2.3 million of Sovereign Grant funding
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King Charles granted his staff a pay rise of about 5-6 per cent, to ease the burden of the cost of living.
This did mean; however, payroll costs were one of the biggest annual increases of any expenditure during 2022-23.
The period of 2022 - 2023 was an "unprecedented" financial year for the Royal Family because millions of pounds were spent on major royal events.
The late Queen's Platinum Jubilee and Her Late Majesty's funeral cost a combined £2.3 million of Sovereign Grant funding, but the cost of the Coronation will not be included until next year's report.