The Swap Points used are based on a Tom/Next swap feed from a Tier-1 bank with a mark-up corresponding to +/- 0.35% of daily market overnight interest rates, plus the interest component described under 'Interest on unrealised Profit and Loss' below.
The accumulated swap points and interest component are added or deducted to the previous opening price of the position.
To provide full transparency to clients Saxo Bank publishes once a day the swap points used for the tom/next rollover. See 'Historic Swap points' below.