If you’re self-employed or own your own business and you’re not using a Solo 401(k) — you are almost certainly leaving tens of thousands of dollars in tax savings on the table every single year.

This is one of the most powerful retirement and tax reduction tools available to business owners and one of the least used. Here’s everything you need to know.

What Is a Solo 401(k)?

A Solo 401(k) — also called an Individual 401(k) or Self-Employed 401(k) — is a retirement plan designed specifically for business owners with no full-time employees other than themselves and their spouse.

It works exactly like a traditional 401(k) — contributions are made pre-tax, grow tax-deferred, and are taxed when withdrawn in retirement. But the contribution limits are dramatically higher than anything an employee can access.

The Contribution Limits Are the Game Changer

In 2024 a standard employee 401(k) allows contributions of up to $23,000 per year.

A Solo 401(k) allows contributions of up to $69,000 per year — and if you’re over 50 that limit goes up to $76,500 with catch-up contributions.

Here’s why: as a business owner you contribute in two capacities simultaneously.

As an employee of your own business you can contribute up to $23,000.

As the employer you can contribute an additional 25% of your compensation — up to the plan limit.

Combined these two contribution streams give you access to a retirement vehicle that is nearly three times larger than what a W-2 employee can use.

The Tax Reduction Is Immediate

Every dollar you contribute to a traditional Solo 401(k) reduces your taxable income by that same dollar in the current year.

For a business owner in the 37% federal tax bracket contributing $69,000 to a Solo 401(k) that’s $25,530 in immediate federal tax savings — in a single year.

Multiply that across a career of maximum contributions and the numbers become extraordinary.

The Roth Option Changes Everything in Retirement

A Solo 401(k) also allows a Roth contribution option.

With Roth contributions you pay tax on the money now — but all growth and all withdrawals in retirement are completely tax-free. No Required Minimum Distributions. No tax bill on the way out. And your heirs inherit it tax-free.

For business owners who expect to be in a high tax bracket in retirement — or who want to build a tax-free legacy for their family — the Roth Solo 401(k) is one of the most powerful tools in the tax code.

You Can Invest in Almost Anything

A standard 401(k) through an employer limits you to a menu of mutual funds and ETFs chosen by the plan administrator.

A Solo 401(k) with self-directed features gives you checkbook control — meaning you can invest your retirement funds in:

  • Real estate
  • Private equity
  • Precious metals
  • Private notes and lending
  • Startups and early-stage companies
  • Cryptocurrency

Every return generated by these investments flows back into your retirement account — tax-deferred or tax-free depending on whether you chose traditional or Roth contributions.

Who Qualifies?

To open a Solo 401(k) you must:

  • Have self-employment income
  • Have no full-time employees other than yourself and your spouse

If you have a side business, a consulting practice, freelance income, or your own company — you likely qualify even if you also have a W-2 job from an employer.

The Bottom Line

A Solo 401(k) is the most powerful retirement and tax reduction tool available to self-employed business owners. The contribution limits are nearly three times higher than a standard employee plan, the investment options are virtually unlimited, and the tax savings are immediate.

If you don’t have one — or if you’re not sure whether your current retirement vehicle is optimized for your situation — that’s exactly what we help with.

We built a full breakdown of the tax-free retirement architecture that business owners at the $500K+ level use to retire without an IRS tax bill.

Or book a call to discuss your specific situation:

JW Tax & Consulting, LLC — Veteran Owned Plano, TX · Fort Lauderdale, FL