Cambridge City Council makes £2.3m accounting error
Cambridge City Council has admitted that an accounting error by its finance staff has left its proposed budget short by £2.3m.
An external audit uncovered the mistake, which happened in June, leaving the council working with the wrong figures for six months.
Leader of the Lib Dem council Tim Bick said a council tax rise was "unlikely" and services could be protected.
Labour group leader Lewis Herbert has called for an investigation.
"No one finds £2.3m slipping through without major system problems," he added.
Auditors Ernst & Young discovered the miscalculation in December, with work still being carried out to find the exact cause.
Mr Bick said the blame appeared to lie entirely with the council's own officers.
The council spends £20m on services a year, with the £2.3m shortfall enough to cover half the council's waste and recycling budget.
It is expected to announce its revised budget proposals in a fortnight.