Geneva says tax receipts will be higher than expected.
Together with a payment from the Swiss National Bank, the extra money can cut the deficit and give public sector workers a better pay deal.
Tax income will be CHF 27m more than forecast and the central bank is sending a further CHF 117m.
The extra money means state workers could get a 2% rise instead of the currently offered 1.35%.
Geneva is in the red by CHF 420m.