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Setup
Solo 401k Setup Process
Services
Features
Deadlines
Compliance Calendar
Who is the Trustee and Custodian?
Do I Need a Third Party Administrator?
Multi-Member LLC and the Solo 401k
Is a Solo 401k Protected Against Bankruptcy?
Checkbook IRA >
What is the IRA LLC?
IRA LLC Setup Process
Funding
Funding Your Solo 401k
What’s the Difference Between a Transfer and a Rollover?
Rollover Real Estate from the Self-Directed IRA to the Solo 401k
How to Document an Indirect Rollover
Rollover Real Estate from the IRA LLC to the Solo 401k
Contributions
Solo 401k Contributions
Contribution Calculator
Sole Proprietorship Contributions
LLC and Partnership Contributions
Voluntary After-Tax Contributions
Corporation Contributions
Mega Backdoor Roth
Contribution FAQs
Qualification
How to Qualify
Multi-owner LLC Business and the Solo 401k
Borrow
Reporting
Solo 401k Reporting Requirements
IRS Form 1099-R
How to File Form 5500-EZ
5500-EZ Frequently Asked Questions
Roth Solo 401k
Prohibited Transactions
Calculators and Tools
Contribution Calculator
Roth Conversion Calculator
Solo 401k Retirement Calculator
Home Budget Calculator
Roth vs Traditional Contribution Calculator
Solo 401k FAQ
Invest
Cryptocurrency
Cryptocurrency Basics
Crypto In Your Solo 401k
Grow Crypto Gains Tax Free with Roth 401k
FAQ – Bitcoin In the Solo 401k
Real Estate
Real Estate and the Solo 401k
Real Estate Example
Financing
Non-Recourse Loans
Non-Recourse Lending Resources
Promissory and Mortgage Notes
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Tag: plumber retirement
Solo 401k for Plumbers: 2026 Tax Advantages
December 2, 2025
