Nottinghamshire have announced a record operating profit of £542,210 for 2011.
The figure is almost three times higher than that posted in 2010 and follows strong tickets sales for international matches against India and Sri Lanka.
A significant increase in Friends Life t20 attendances and a rise in membership also contributed to the strong financial results, despite difficult trading conditions.
Notts chairman Peter Wright said: “Last year presented a number of challenges, not least a round of bidding for major matches, and delivering a record surplus against that backdrop reflects tremendously well on the people and the systems that we have in place at Trent Bridge.
“We’re very proud of what we have achieved but a lot of hard work remains and it is very important that our members and cricket supporters in general continue to attend matches at Trent Bridge.”
Notts were handed a tremendous boost in September last year when they won the right to host Ashes Tests in 2013 and 2015, as well as a high profile Test against India in 2014.
England will also play one-day internationals at the ground against New Zealand (2013 and 2015), Sri Lanka (2016) and Pakistan (2016).
Wright added: “International cricket is vital to our financial prosperity and having a guaranteed supply of matches to 2016 will allow us to continue to invest in our team and our venue.”
Nottinghamshire were the most profitable county club in 2010 with a pre-tax surplus of £189,370, and these results are likely to place them among the top performers again.
The profits have already allowed director of cricket Mick Newell to strengthen his squad for the forthcoming campaign with the signings of Michael Lumb, Harry Gurney and, most significantly, England A captain James Taylor.
They also represent an impressive legacy for outgoing chief executive Derek Brewer, who is set to take up an equivalent role at MCC in mid-March.
Brewer said: “Twenty years ago the club put together a masterplan to improve the ground and what we offered, so a lot of credit has to go to those involved then for having the vision.
“If you look around the place it looks really good these days. But we’ve also earned a reputation for providing a great customer experience, which is important.
“It’s been my great privilege to lead a very successful team at Trent Bridge and, while I’m very excited about my new post at Lord’s, I shall be very sad to leave.”