If the winner takes a discard, the player who discarded the winning tile pays double and the other two pay the hand’s value. If the winner picks the tile from the wall, all three other players pay double.

A winning hand with no Jokers in it doubles the value. This bonus does not apply to singles and pairs hands, because Jokers are never allowed in them.

Yes. Self-pick still doubles what each player pays. Only the jokerless bonus is skipped for those hands.

Under standard scoring it does, so everyone pays double. Use the self-picked option in the calculator for that case, and confirm with your table.

At 1 point = 1 cent, a 25-point hand won on a discard pays 50 cents from the discarder and 25 cents from each of the others, so the winner collects $1.00. Self-picked, each of the three players pays 50 cents, a total of $1.50.

Some groups play that way, for example when the winner has several exposures. It is a house rule, so the calculator has it as an option. The winner collects the same total either way.

A common convention is 1 point = 1 cent, so a 25-point hand is 25 cents. Stakes vary, so choose points if your table uses a different value and convert at your own rate.

No. It only does the arithmetic your table has already agreed on. No wagers are accepted and no money is moved.