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Camelot, the operator of the UK National Lottery, increased sales by £255m to £7.2bn in the year to the end of March.
But returns to good causes fell £600,000 to £1.6bn.
That's because some of the 'good causes' money - £39m - was spent on “necessary marketing expenditure agreed with the Gambling Commission”, according to Camelot.
The sales rise was driven by record digital sales of £1.8bn, up from £1.6bn the year before.
Camelot has held the exclusive licence for the UK lottery since its inception in 1994 with the current licence expiring in 2023.