Plymouth City Council is having to further tighten its belt to avoid overspending by almost £3m by the end of the year - partly driven by the rising number of children in care.
Councillors are being told the budget already takes into account £11m of savings this year, after £18m cuts last year.
The biggest pressures come from spending on the increased number of looked-after children and a rise in the number of adults needing social care. Each service was heading towards being more than £500,000 over budget by the end of the year.
A report says there are currently 38 residential placements with budget for 36, and 25 supported living placements with budget for 15.
There were 432 children in care in Plymouth by the end of June - up by more than a tenth from last year.
The council's annual spending on services - known as the revenue budget - has been set at just over £185.5m. A monitoring report from the first three months of the financial year up to June forecasts a potential overspend of almost £2.9m.
Now the council is planning to bring forward more measures to find the extra savings to balance the books by April next year.
Government funding for the council has fallen by £70m since 2013.