TL;DRSpreading a line's amount evenly across the days of its period.
A subscription line covering 1 January to 31 March recognises the same amount each day of the quarter. The daily rate is the total over the total days — an accounting method, distinct from the calendar-unit rule pricing uses.
Where it happens in Sonic
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See it on your contracts
A walkthrough on the agreements and files you actually bill from — not a slide deck.