The cost of security and policing for this year's G8 summit in Scotland was £72m, it has been revealed.
There were clashes between protesters and the police
The UK Treasury has agreed to pay £20m of the cost with the rest of the bill being met by the Scottish Executive.
A senior government source confirmed the total but an executive spokeswoman said Finance Minister Tom McCabe would make an official statement within days.
Police from across the UK were drafted in as leaders of the world's foremost industrial nations met at Gleneagles.
Much of the bill was thought to have been a result of overtime costs.
The minister was also thought to be preparing his statement with a focus on the economic benefits of the Perthshire summit to Scotland in July.
An executive spokeswoman said: "Later this week we expect to deliver a report outlining the costs and benefits to Scotland of hosting the G8 summit.
"We have always made it clear that in terms of policing the event, there would be some costs to the executive which we would meet and that the Treasury would also contribute towards this cost.
"It is important to look at the long-term picture and consider the opportunities the summit brought for Scotland's economy and place on the world stage."
First Minister Jack McConnell has already been questioned about the cost of the summit to the taxpayer but insisted that an element of Scotland's block grant contains funding for major events such as the summit at Gleneagles.
Scottish National Party MSP for Perth, Roseanna Cunningham, said: "It is what we feared and, of course, it turns out to be true.
"Basically Westminster is just going to dump the cost on Scotland - a small country, far away, of which they know little and care less."
World leaders from the United States, Canada, Russia, France, Italy, Germany and Japan joined Prime Minister Tony Blair at the summit.
Trouble flared on a couple of occasions with damage to property in Stirling. There were confrontations between police and protesters in Edinburgh and at Auchterarder, next to the summit venue.