The German was declared bankrupt in 2017.
The world number two is also now likely to take his place at the ATP Finals in London.
There are two singles spots remaining for the end-of-season showpiece at the O2.
The All England Club is planning for three different scenarios for next year’s event.
Nadal joined Federer on 20 grand slam singles titles, the most in the history of men’s tennis.
Nadal claimed a dominant 6-0 6-2 7-5 victory in two hours and 43 minutes.
Teenager Swiatek is the first Polish player to win a grand slam singles title.
Swiatek did not drop a set in claiming her first grand slam title.
Novak Djokovic and Rafael Nadal will contest their ninth grand slam final at the French Open.