Ukrainian President Volodymyr Zelenskyy wants the price of Russian oil to be less than $65 a barrel.
Zelenskyy said at the news conference that he wanted the sanctions to be effective so that Russia felt them.
The European Union governments have yet to come to a consensus on what the price cap will be. The European Commission is pushing a maximum level of $65 after talks failed over the weekend.
The EU imposed an embargo on Russian crude on December 5. The goal is to create a loophole in the EU ban that will allow supplies of Russian oil to flow on the global market while limiting export revenues for Moscow.
Zelenskyy thinks the limit is an artificial one.
The price cap was reported to be $70 per barrel. Zelenskyy said on Friday that it would be a concession to Moscow if that level was reached.
China and India have already been buying Russian crude at a steep discount and a price cap would allow them to bid even lower.
The nations that have agreed to adhere to the cap are the ones that already have a ban on Russian oil imports.
She told Insider last week that no countries need to sign up to the price cap if Russia keeps selling at their current level.