It's been a good year to be a farmer.

The U.S. Department of Agriculture says farm profits are expected to spike by 28% this year to $100.9 billion.

Most farmers say they're using the extra cash to pay off debt and put some money aside. But, they're also investing in new tractors, combines and land.

Dale Hadden has a 4,000-acre farm with his brother and parents in Illinois. He estimates his corn and soybeans were worth 10% to 15% more than in previous years, which amounts to tens of thousands of dollars. Hadden spent a chunk of that on an advance full-year payment on a 7-year loan on 1 of his tractors. He says it was a successful year, but it might not always be that way.