Our favourite Royals will be having a change of career for the day by becoming stockbrokers, for a charity event with the brokerage firm ICAP.
People magazine have reported that the pair will join the annual telethon that sees the company donate a day's revenue and commissions to a number of charities.
In recent weeks William and Kate have been very involved with their charity work and patronage, and this will be no exception.
The chosen ICAP charities for this year are SkillForce, of which William is a patron as well as SportsAid and Place2Be, of which Kate is a patron.
The young Royals will begin their day by taking a tour of the offices and then it will be their turn to close deals over the phone under supervision from qualified traders.
This isn't the first time William has taken a break from his day job with the air ambulance, as back in 2010 the newly-engaged pilot also took part in the same fundraiser.
According to Hello! magazine, he even managed to secure a £14 billion deal between two major world banks.
Sounds like Wills has some serious haggling skills!
Lots of celebrity faces have taken part since the day launched in 1993, including Cheryl Fernandez Versini, The Duchess of Cornwall and Millie Mackintosh.
When Prince Harry took over the phones in 2014, one surprised broker said; 'It's nice to have a broker that's not from Essex.'
Kate's father-in-law Prince Charles also had a go but confessed he had 'no idea' what he was doing.
Not only does the day see celebrities welcomed on the trading floor but employees also wear fancy dress in a bid to raise more money for the good causes.