Ticket sales and broadcasting rights should contribute 0.25 points, with the rest coming from tourism and civil servants' bonuses, the official body said in its latest report. Overall growth in gross domestic product (GDP) between July and September would be 0.5 per cent, INSEE said, with 1.1 per cent growth forecast for 2024 as a whole.

The impact of the Games on the economy would be similar to that of London 2012, which boosted GDP by between 0.2 and 0.4 percentage points in the third quarter of 2012, when overall growth was 1 per cent. The expansion in the July-September quarter would be mainly due to "an increase in tourism", as well as ticket sales and broadcasting rights, which would be recorded as activity in the period.

The Olympic Games will be held in Paris from 26 July to 11 August and the Paralympics from 28 August to 8 September. The organising committee expects around 16 million visitors, 20% of whom will come from outside France. The President of the French Court of Auditors, Pierre Moscovici, has told public broadcaster France Inter that the Paris 2024 Olympic and Paralympic Games will cost the French state between €3 billion and €5 billion.

The Olympics will reduce growth by 0.1 percentage points of gross domestic product (GDP) in the last quarter of 2024 as some one-off effects linked to the Games fade, Insee added. The National Statistics Institute (INSEE), which published an economic outlook report, said the French economy would grow by 1.1 per cent overall this year, while without the Olympics and Paralympics it would remain at 1 per cent.

Despite the positive outlook, INSEE expressed concern that the volatile political climate following Sunday's elections, which resulted in a hung parliament, could pose risks to these economic forecasts. The Paris 2024 Olympic Games represent a major event for France, with both promising and uncertain economic implications due to the country's current political environment.

The report also suggests that, while household consumption is expected to benefit from the Olympics, investment growth will stagnate in the second half of the year due to relatively high interest rates. In addition, inflation is expected to ease in the remainder of the year to 1.9 per cent in December from 2.1 per cent in June.