Merkel and the leaders of the 27 EU countries that will remain in the bloc following Britain's exit will discuss financing after 2020 at the meeting in Brussels on Friday.
Up to 14 billion euros (17.2 billion dollars) will be lost from the budget because of Brexit once Britain, a major financial contributor, leaves the bloc in 2019.
There are significant differences among the 27 members on how to respond to the budget loss.
Merkel, who has been unable to form a new government since September elections, has so far not outlined how large the budget shortfall would be and how much additional funding Germany would contribute to the budget.
Up to 14 billion euros (17.2 billion dollars) will be lost from the budget because of Brexit once Britain, a major financial contributor, leaves the bloc in 2019.
There are significant differences among the 27 members on how to respond to the budget loss.
Merkel, who has been unable to form a new government since September elections, has so far not outlined how large the budget shortfall would be and how much additional funding Germany would contribute to the budget.