Ohio sales tax is charged on all sales of tangible personal property and services unless there is an exception to this tax. Farming is one of the exceptions.The LLC provides an attractive business entity for many Ohio farm businesses, but it is not for everyone. Seek professional advice when setting up an LLC. Download and fill out the Farm Market Registration Form to register. Is an LLC the best business structure for a farm, or could an S Corp be a better option? Gudorf Tax Group can help with your Ohio farm tax Look up your state's Small Business Development Center. They can make this easy. The Beginning Farmer Tax Credit is available to those who've recently entered the field, as well as those who help beginning farmers.