top of page
  • Writer's pictureMaurice Wilson

The Mega Backdoor Roth 401k: A Tax-Free Strategy for High-Income Earners

If your household income is at least $250,000 and you are looking for ways to minimize your tax burden, the Mega Backdoor Roth strategy can be a valuable option. This strategy allows high-income earners to take advantage of Roth IRA benefits, which include tax-free growth and tax-free withdrawals in retirement. Here’s how it works and why it might be beneficial for you:

Real estate agent showing high income couple through a door.

How the Mega Backdoor Roth Strategy Works

1. Maximize Traditional 401(k) Contributions:

- First, you should max out your regular 401(k) contributions. For 2024, the limit is $23,000 if you are under 50, or $30,500 if you are 50 or older, due to catch-up contributions.

2. After-Tax 401(k) Contributions:

- Some employers offer plans that allow after-tax contributions to a 401(k) beyond the standard pre-tax and Roth limits. The total limit for combined contributions (employer and employee) in 2024 is $66,000 (or $73,500 if you're 50 or older).

3. In-Plan Roth Conversions or Rollovers:

- Once you’ve made after-tax contributions, you can either convert these contributions to a Roth 401(k) within your plan or roll them over to a Roth IRA. This conversion allows the after-tax contributions to grow tax-free.

Benefits of the Mega Backdoor Roth Strategy

1. Tax-Free Growth:

- Contributions converted to a Roth account grow tax-free, which can significantly enhance your retirement savings, especially if you have a long investment horizon.

2. Tax-Free Withdrawals:

- Qualified withdrawals from a Roth IRA or Roth 401(k) in retirement are tax-free, which can provide substantial tax savings compared to traditional retirement accounts.

3. High Contribution Limits:

- The Mega Backdoor Roth allows you to contribute significantly more than the standard Roth IRA limit ($6,500 for 2024, or $7,500 if you are 50 or older).


  • Employer Plan Rules:

    • Not all employer 401(k) plans offer the ability to make after-tax contributions or in-plan conversions. Check with your HR department or plan administrator.

  • Tax Implications of Conversions:

    • While after-tax contributions themselves aren’t taxed again upon conversion, any earnings on those contributions are subject to taxes when converted. Planning conversions carefully can help manage the tax impact.

  • Income Limits:

    • Unlike direct Roth IRA contributions, the Mega Backdoor Roth strategy isn’t subject to income limits, making it particularly attractive for high-income earners who wouldn’t be eligible to contribute directly to a Roth IRA.

Steps to Implement

1. Check Your 401(k) Plan:

  • Confirm that your plan allows after-tax contributions and either in-plan Roth conversions or in-service rollovers to a Roth IRA.

2. Contribute After-Tax Dollars:

  • Once pre-tax and regular Roth 401(k) contributions are maxed out, start contributing after-tax dollars up to the total annual limit.

3. Convert or Roll Over:

  • Regularly convert after-tax contributions to a Roth 401(k) or roll them over to a Roth IRA to maximize tax-free growth potential.

By leveraging the Mega Backdoor Roth strategy, you can significantly boost your retirement savings while minimizing your tax burden, making it a powerful tool for high-income earners.

Take Control of Your Financial Future with Wilson Wealth

Ready to maximize your retirement savings and minimize your tax burden? Let Wilson Wealth guide you through the Mega Backdoor Roth strategy. Contact us today to schedule a consultation and start planning a more secure and tax-efficient retirement.

Call us at 704.327.3189 or visit to get started.

Your future self will thank you!


Recent Posts

See All


bottom of page