Annual accounts for 2013 come under scrutiny as MEPs prepare 'discharge'.
Jacek Dominik, the European commissioner for financial programming and budget, has defended the calculations.
European Council discussions were overtaken by a row over an EU budget bill presented to nine member states.
The UK, the Netherlands and seven other member states have been asked for extra payments. Why?
David Cameron and Mark Rutte are seeking ways to avoid the payment at the European Council.