Defined benefit and cash balance plans let high-earning solo professionals over 45 deduct $150,000 to $290,000 a year — three to four times what a SEP-IRA or Solo 401(k) allows. This guide walks through the contribution math, candidate profile, costs, deadlines, and how to stack a DB plan on top of a Solo 401(k).
A Solo 401(k) crosses into mandatory Form 5500-EZ filing once combined plan assets exceed $250,000 on the last day of the plan year. Late filings cost $250 per day up to $150,000 annually, but Rev. Proc. 2015-32 caps catch-up filings at $1,500 per plan if no penalty notice has been issued.
U.S. cash balance pension plans let solo doctors, attorneys, and consultants deduct $100,000–$370,000 a year on top of a Solo 401(k). 2026 contribution limits, a worked example for a 54-year-old physician, and the actuarial commitments to weigh before signing.
The Backdoor Roth IRA lets high earners contribute up to $7,500 a year to tax-free retirement growth by pairing a nondeductible traditional IRA contribution with a Roth conversion. Covers the five-step process, the pro-rata rule that derails most attempts, Form 8606 filing, and the recordkeeping that prevents being taxed twice.
In 2026, the Mega Backdoor Roth can move up to $47,500 of after-tax 401(k) money into Roth above the $24,500 elective deferral limit. This guide covers how the strategy works, the three plan features it requires, how the 401(k) pro-rata rule differs from the IRA version, and the mistakes that quietly erode its value.
In 2026, a self-employed person earning $100,000 can contribute about $18,587 to a SEP IRA versus $43,087 to a Solo 401(k). This guide compares 2026 contribution limits, Roth options, December 31 deadlines, and Form 5500-EZ filing thresholds so freelancers and consultants can choose the right plan.
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