But equities bankers will see payouts stay flat, and fixed income, currencies and commodities traders will see pay dip.
Junior origination and advisory staff expect average bonuses of £45,000 this year, the data website said, up from £36,000 a year ago.
And managing directors in their departments are likely to get £198,000, up from £158,000 in 2014.
Associates in the equities business can expect £23,000, with their senior bosses on £172,000 – almost unchanged on the year.
But traders had a poor 2014 as markets were flat, resulting in low demand from clients.
The result will be a dip in bonuses from £41,000 to £38,000 for junior team members, and from £290,000 to £275,000 for managing directors.