Council tax is projected to rise at its fastest rate in 20 years, with potential annual increases of up to 5 per cent as local governments struggle to close funding gaps.
The IFS suggested more people may be forced to pay higher income tax rates due to 'fiscal drag,' potentially generating an additional £10bn a year by 2029.
Government sources did not deny the possibility of extending the freeze on tax thresholds, stating that future tax decisions will be made at the Budget.