SCorpDesk / 2026 S-Corp & QBI Guides / 2026 S-Corp Solo 401(k) vs. SEP IRA Calculator: How W-2 Salary Sets Your $70,000 Cap

2026 S-Corp Solo 401(k) vs. SEP IRA Calculator: How W-2 Salary Sets Your $70,000 Cap

How do you calculate the maximum 2026 Solo 401(k) contribution for an S-Corp owner?

In an S-Corporation, only your Form W-2 Officer Salary (not your K-1 distribution) counts for retirement plan contributions. For 2026, you can contribute up to $24,500 as an employee elective deferral (plus $7,500 catch-up if 50+) plus an employer profit-sharing contribution of up to 25% of your W-2 salary.

In an S-Corporation, only your Form W-2 Officer Salary (not your K-1 distribution) counts for retirement plan contributions. For 2026, you can contribute up to $24,500 as an employee elective deferral (plus $7,500 catch-up if 50+) plus an employer profit-sharing contribution of up to 25% of your W-2 salary.

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Frequently Asked Questions

How do you calculate the maximum 2026 Solo 401(k) contribution for an S-Corp owner?

In an S-Corporation, only your Form W-2 Officer Salary (not your K-1 distribution) counts for retirement plan contributions. For 2026, you can contribute up to $24,500 as an employee elective deferral (plus $7,500 catch-up if 50+) plus an employer profit-sharing contribution of up to 25% of your W-2 salary.

Download your print-ready 2026 Form 1120-S Reasonable Salary & Accountable Plan PDF in 60 seconds.

100% browser-based calculation for S-Corp Reasonable Compensation, 20% Permanent Section 199A QBI, IRC § 62(c) Accountable Plans, and Section 179 vehicles.

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