US

US Quarterly Estimated Taxes: A Founder's Guide

US founders who expect to owe $1,000+ in taxes must pay quarterly estimated taxes (April 15, June 15, Sept 15, Jan 15).

3 min read·Updated July 6, 2026

TL;DR

US founders who expect to owe $1,000+ in taxes must pay quarterly estimated taxes (April 15, June 15, Sept 15, Jan 15). Calculate as 25-30% of net profit and pay via IRS Direct Pay or EFTPS.

Introduction

US founders who expect to owe $1,000+ in taxes must pay quarterly estimated taxes (April 15, June 15, Sept 15, Jan 15). Calculate as 25-30% of net profit and pay via IRS Direct Pay or EFTPS.

This guide is written for first-time founders and solo entrepreneurs who need practical, actionable advice — not theory. Whether you're just getting started or hitting a specific roadblock, the steps below will help you move forward with confidence.

What You Need to Know

Who must pay is a critical part of getting this right. Start by researching your specific requirements — they vary by business type, revenue, and location. Document your current situation before making changes.

For most founders, the practical approach is to start simple and add complexity only when your business demands it. Don't over-engineer early decisions, but don't ignore them either. Many founders regret waiting too long to address who must pay.

If you're operating across multiple regions (US, UK, EU), note that rules differ significantly. Always verify current regulations with official government sources or a qualified advisor.

Step-by-Step Process

How to calculate is a critical part of getting this right. Start by researching your specific requirements — they vary by business type, revenue, and location. Document your current situation before making changes.

For most founders, the practical approach is to start simple and add complexity only when your business demands it. Don't over-engineer early decisions, but don't ignore them either. Many founders regret waiting too long to address how to calculate.

If you're operating across multiple regions (US, UK, EU), note that rules differ significantly. Always verify current regulations with official government sources or a qualified advisor.

Common Mistakes to Avoid

Payment methods is a critical part of getting this right. Start by researching your specific requirements — they vary by business type, revenue, and location. Document your current situation before making changes.

For most founders, the practical approach is to start simple and add complexity only when your business demands it. Don't over-engineer early decisions, but don't ignore them either. Many founders regret waiting too long to address payment methods.

If you're operating across multiple regions (US, UK, EU), note that rules differ significantly. Always verify current regulations with official government sources or a qualified advisor.

When to Get Professional Help

Penalties for missing is a critical part of getting this right. Start by researching your specific requirements — they vary by business type, revenue, and location. Document your current situation before making changes.

For most founders, the practical approach is to start simple and add complexity only when your business demands it. Don't over-engineer early decisions, but don't ignore them either. Many founders regret waiting too long to address penalties for missing.

If you're operating across multiple regions (US, UK, EU), note that rules differ significantly. Always verify current regulations with official government sources or a qualified advisor.

Key Takeaways

  • US Quarterly Estimated Taxes: A Founder's Guide starts with understanding your specific situation and region.
  • Take action on one step today rather than trying to do everything at once.
  • When in doubt, consult a qualified professional for your jurisdiction.
  • Bookmark related guides below to build a complete picture.

Frequently Asked Questions

How much should I set aside?+
25-30% of net profit for federal taxes, plus state taxes (0-13% depending on state).
What if my income varies?+
Use the annualized income installment method or pay based on prior year's tax liability.