That depends on the agreement they had with the business. Usually it is 33% when the deal closes, 33% a month later and 34% 60 days later.
Living social on the other hand does 100% 15 days after the deal closes.
There is also a credit card fee which is 2.5-5 % and DealFind will either pass it all to the business or half of it.
The assumption is that about 30% of the people don't redeem their coupon so it's actually free money to the business. That is what they are telling people anyway.