Dale's 2-0 victory over Cheltenham Town confirmed the club's promotion from League Two, two seasons after they were relegated from the third tier.
"That's the real magic of what we've done this season. We've done it with a relatively small budget," Hill told BBC Radio Manchester.
"We won't overspend next season but we will be successful. There's no question in my mind about that.
"It was a magnificent day. In any campaign, you want to be successful. To get promoted is as big a success as you can get."
Hill guided Rochdale to promotion from League Two in 2010 during his first spell in charge at Spotland.