A BP spokesman expressed regret Monday over the Supreme Court decision.
Company spokesman Geoff Morrell said in a statement that new accounting rules "will improve the program's compliance with the terms of the settlement agreement."
But Morrell said BP continues to feel that the problem for which it sought relief from the US high court persists.
"We remain concerned that the program has made awards to claimants that suffered no injury from the spill, and that the lawyers for these claimants have unjustly profited as a result," Morrell said. "On behalf of all our stakeholders, we will therefore continue to advocate for the investigation of suspicious or implausible claims and to fight fraud where it is uncovered."
The April 20, 2010, blowout of an offshore oil rig caused the largest marine oil spill in US history, with millions of barrels of oil gushing into the Gulf of Mexico before the leak was finally capped July 15.
Under the settlement, BP has so far paid out $36.3 billion in fines and compensation to individuals, companies and local authorities and for clean-up operations on the US coastline.
After pleading guilty in court, BP was ordered to pay a record $4.5 billion fine.
In September, a federal judge in Louisiana found the British company guilty of "gross negligence," opening it up to additional fines of up to $18 billion.
Copyright Agence France-Presse, 2014