2026 IRS Quarterly Tax Deadlines for Self-Employed Workers
Complete guide to quarterly estimated tax deadlines and how to avoid penalties.
Read Article →📅 Quarterly Estimated Taxes
Quarterly Estimated Taxes
Avoid IRS underpayment penalties with our guides to quarterly estimated tax planning.
Articles in Quarterly Estimated Taxes
Quarterly Estimated Taxes 2026: The Complete Beginner's Guide to IRS 1040-ES
New to quarterly estimated taxes? Here's what every self-employed person must know about Form 1040-ES, payment deadlines, and how to calculate what you owe in 2026.
Read Article →IRS Safe Harbor Rules for Quarterly Taxes in 2026: 90% Current vs 100% Prior Year
Avoid underpayment penalties with the IRS safe harbor rules. Learn how the 90% current year and 100% prior year methods work, including the 110% threshold for high earners.
Read Article →Quarterly Tax Underpayment Penalty 2026: How to Calculate and Avoid It
The IRS underpayment penalty catches thousands of self-employed workers each year. Learn how the penalty is calculated for 2026, how to estimate your exposure, and proven strategies to avoid it entirely.
Read Article →Q1 Quarterly Tax Deadline 2026: March vs April? Key Dates You Can't Miss
The Q1 2026 quarterly tax deadline is April 15 — not March 15. Here's why the confusion exists, what period Q1 covers, and the critical 2026 deadlines every self-employed person must have on their calendar.
Read Article →Annualization Method for Quarterly Taxes: Uneven Income Patterns in 2026
If your income varies significantly quarter to quarter, the annualization method can reduce or eliminate underpayment penalties. Learn how to apply it for 2026 with concrete examples.
Read Article →Quarterly Taxes with Credits and Withholding: Reducing Payments in 2026
Tax credits and W-2 withholding can significantly reduce your quarterly estimated tax payments. Learn how to account for the Child Tax Credit, EITC, and withholding in your 2026 quarterly calculations.
Read Article →Small Business Quarterly Taxes 2026: What New Owners Must Know First
New to running your own business? Here's every first-time owner's essential guide to quarterly estimated taxes for 2026 — from setting up your first payment to avoiding common pitfalls.
Read Article →Seasonal Business Quarterly Taxes 2026: Managing Irregular Income
For businesses with lopsided income — holiday retailers, summer contractors, event-based services — quarterly taxes require a specialized strategy. Here's how to manage seasonal income patterns in 2026 without penalties.
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