Quarterly estimated taxes are due in 7 days — self-employed and gig workers who underpay by June 15 owe 6% IRS interest, compounding daily
Self-employed workers and gig contractors face a hard deadline in seven days. June 15, 2026, is the cutoff for the second quarterly estimated tax installment, covering income earned from April 1 through May 31. Anyone who underpays will owe the IRS interest at a 6% annual rate, and that interest compounds daily on the prior…