US

US Business Tax Deductions Founders Often Miss

Commonly missed deductions: home office, health insurance premiums, retirement contributions (SEP-IRA, Solo 401k), business mileage, software subscriptions, professional development, and startup costs up to $5,000.

3 min read·Updated July 6, 2026

TL;DR

Commonly missed deductions: home office, health insurance premiums, retirement contributions (SEP-IRA, Solo 401k), business mileage, software subscriptions, professional development, and startup costs up to $5,000.

Introduction

Commonly missed deductions: home office, health insurance premiums, retirement contributions (SEP-IRA, Solo 401k), business mileage, software subscriptions, professional development, and startup costs up to $5,000.

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

Home office deduction 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 home office deduction.

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

Retirement contributions 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 retirement contributions.

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

Software and tools 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 software and tools.

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

Startup cost deduction 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 startup cost deduction.

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 Business Tax Deductions Founders Often Miss 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

Can I deduct my laptop?+
Yes — if used primarily for business. Depreciate over time or use Section 179 for immediate deduction.
What's the home office deduction worth?+
Simplified method: $5/sq ft up to 300 sq ft ($1,500 max). Actual expense method often yields more.