Quarterly Estimated Taxes for Freelancers & Digital Nomads in 2026: The September 15 Deadline, the 7% Penalty, and How Much to Pay
The September 15, 2026 estimated tax deadline is here, and the IRS underpayment penalty holds at 7% through year-end. Safe harbor rules, real freelancer math, the annualized method & a nomad-specific action plan.