NOTTS Police could be facing an extra cut of £10 million to their annual budget, it is claimed.
The force is already in the process of saving a massive £42.3 million from its spending by 2015.
But Notts Police and Crime Commissioner Paddy Tipping said there was a chance the force would have to shave off another £10 million between April 2015 and April 2016.
The force has already closed some police stations, forced some more experienced officers to retire, dismantled its mounted unit and made other cuts as it works towards the £42.3 million figure.
An announcement from the Government is expected on June 26. This could indicate more cuts to public spending, which, if handed down by the Home Office, would mean Notts would need to save another £10 million.
Mr Tipping said: "Those are indicative figures that the Treasury have been talking about.
"It is going to be tough – we may have to make some difficult decisions and tough choices. We have been looking at a range of possibilities as to how we might do that, but there is no point speculating."
The potential problem was discussed at a meeting between Mr Tipping and senior officers last Tuesday.
Chief Constable Chris Eyre said: "We may get the kind of public sector cut we never expected to have in our lifetimes."
The way the Government works out how much cash to give Notts Police in grants has been criticised by Mr Tipping and Mr Eyre in the past.
The Government uses a funding calculation drawn up in 2004 to work out how much each force needs a year to fight crime.
But it does not apply it in full, to avoid big, sudden shifts in funding for forces around the country.
Mr Tipping's office has said this means Notts loses out on about £10 million a year.
Sherwood Conservative MP Mark Spencer said: "The force have made a lot of savings and I think what they have done so far is sensible, as crime is still coming down.
"Successive governments have not addressed the imbalances in the funding system.
"The previous government ducked it. It would appear we are going to do the same and that is disappointing.
"We need to give Nottinghamshire its full share. But we are where we are in terms of the economy."
In February, the Home Office told the Post the Government was planning a "fundamental review" of the police allocation formula.