How much commission do delivery aggregators charge?

Commonly 15–30% of order value depending on contract and delivery model — who rides, what marketing placement you take, category and exclusivity terms all move the rate. But the range is context, not your number: the figure that decides your margin is the effective rate in your own agreement, add-ons included. Read the contract, confirm the effective rate per order, and model contribution per order on that — commission, packaging and promotion all come off before food cost.

From Five Nights to a Tighter Restaurant P&L: Food Cost, Labour, Rent, the Platform's Cut and the Weekly Read — the full reading, with the method behind this answer.