Rishi Sunak and the European Commission president are due to hold “final talks” on a new Brexit deal for Northern Ireland on Monday, Downing Street says.
The prime minister and Ursula von der Leyen will meet in Berkshire in the afternoon to discuss “complex challenges” around the protocol.
The UK wants to change the current agreement – which sees some goods checked when entering Northern Ireland from the rest of Great Britain.
A new deal has been expected for days.
Deputy Prime Minister Dominic Raab earlier said the UK and EU were “on the cusp” of a deal and that the EU had “moved” on some issues.
Downing Street released more details about the talks between Mr Sunak and Ms von der Leyen, which is set to take place around late lunchtime.
If a deal is reached, it would then be announced later on Monday, with the leaders holding a joint press conference after the cabinet has been updated.