Proposals for a 6% levy on overseas student tuition fees have raised concerns among some university leaders worried about predicted financial losses.
The new tax would help pay for means-tested maintenance grants, which the government said would help break down barriers.
However, a study by the Higher Education Policy Institute said the levy could cost Durham University £10m and Newcastle University £9m, putting them in the top 20 worst affected institutions in the country.
Newcastle University said it was "deeply concerned", while Durham University said it was awaiting details, but it might face "challenging decisions".

