Generally tax-exempt organizations with less than $50,000 in gross receipts can file the 990N, a simple annual online filing requiring minimal information from the organization. Organizations with $50,000 to $200,000 of gross receipts and less than $500,000 of assets can generally file the IRS Form 990EZ, which as its name implies, is easier than the long-form 990. Organizations not meeting either of those filing thresholds should file the regular long-form IRS 990.