McCarthy took charge at Portman Road in November 2012 and has taken the club from struggling in the Championship to challenging for the play-offs, despite having limited transfer funds at his disposal.
Having missed out on a place in the top six, McCarthy is now thinking of how he can strengthen his squad ahead of next season and it will once again largely be a case of picking up free transfers, loans and swap deals, but he says he has no problem with the way Evans runs the club.
He told the Green Un: "I've had support from Marcus. He trusts me to do my job; he supports me when we get a couple of bad results and he doesn't get carried away when we get a couple of good results and start demanding we get in the top six. I like that level of consistency.
"I do know the gig and I'll be doing it again. Let's hope we can do it better than we did this year."
Asked if there was any tension between him and Evans over a lack of funds, McCarthy added: "None whatsoever, absolutely none.
"I have a great relationship with him. I do understand the gig. I'm not one of those that takes the job and then tries to change it because it doesn't suit you. You can't just throw your toys out the pram.
"I took this job in good faith, in trust of what it was. I get well paid for doing it and I think I have repaid it well in the job that I've done.
"That's with the team and with the way the club is now. I think we're in a good place to move forwards."
"It's always funny when you talk about 'bargains'. People will be saying 'oh, you haven't got any money to spend'. I see people who went out and spent money and didn't get as good players as we got for nothing."
McCarthy is not sure whether there will be any developments over his own contract situation this summer, but he is relaxed about the issue.
He added: "I don't know, we'll see. I've got another year to run. I'm happy here and I would like to think that Marcus and everybody else is happy with me being here.
"I'm seeing him in the summer and we will have a discussion about loads of things."