In our country, it is necessary to display Rounding Adjustment on the receipt for customer's information.
Sadly I've been searching around for this solution but ended up not found.
I'm currently running 2.96CE on my business.
Here is what I experienced: (Rounding to 0.05 case)
(Round down)
Bill Amount: $8.92, round to $8.90 which is correct, but it shows as "Discount" instead of rounding.
On top of that, If I give a discount for customer (maybe about $3.00). the Discount will show as $3.02 instead of $3.00.
(Round up)
Bill Amount: $8.98, round to $9.00 which is correct too, but there's nothing to show the round up amount,
which causing a lot of confusion.
I hope in future development, SambaPOS could include this feature. I guess it's not hard, since the calculation is already there.