The due date for many tax-exempt and charitable organizations is the 15th day of the 5th month after the end of the accounting year. For an organization with a December 31 year-end, that’s May 15.

Plus: What’s open at the IRS, the fight over premium tax credits, guidance on OBBBA, Social Security increases, digital taxes and tariffs, Section 179 expenses and more.

Use this guide as a quick reference to find important information on nonprofit groups from the forms they’re required to file with the Internal Revenue Service. Most federally tax-exempt groups must ...

ProPublica is a nonprofit newsroom that investigates abuses of power. Sign up to receive our biggest stories as soon as they’re published. As Americans scramble to make their year-end charitable ...