The declarer's team gains contract points if they fulfill the contract. Overtrick points are assigned for each trick that was taken above the contract's stated number. Undertrick points are awarded to the declarer's opposing team if the declarer's team does not fulfill the contract. Contract, Over and Under points are further increased for a doubled or redoubled contract.
Base contract scoring for each is as follows. If trumps are clubs or diamonds: 20 per trick. If trumps are hearts or spades: 30 per trick. If Notrump(NT): 40 for the first trick and 30 for each subsequent trick.
After a team scores, 100 or more contract points the game is complete and the next game starts. Extra points are awarded for winning a small slam (12 tricks) or a grand slam (13 tricks). Honors points are given for starting the deal with the top 4 or 5 trumps (A K Q J 10).