Retirement Contribution Estimator for Business Owners
Explore potential retirement-plan contribution opportunities for employees, self-employed individuals, and business owners.
Free educational estimator • No signup required • Calculator inputs stay in your browser
This is an educational contribution estimator only. It does not determine plan eligibility, compensation definitions, nondiscrimination testing, plan-document requirements, filing deadlines, tax deductibility, or investment suitability.
Where Do I Find These Numbers?(show)
- W-2 wages: Generally Form W-2, Box 1 or Box 5, depending on the plan's compensation definition.
- Net self-employment earnings: Generally estimated from Schedule C net profit, before retirement contributions.
- Existing contributions: Generally shown on payroll records, plan statements, or year-to-date payroll reports.
Official IRS Sources
- IRS Retirement Plans for Small Entities and Self-Employed
- IRS SEP Plan Information
- IRS SIMPLE IRA Plan Information
- IRS One-Participant 401(k) Plans (Solo 401(k))
- IRS IRA Contribution Limits
- IRS 401(k) Plan Contribution Limits
- IRS Publication 560 — Retirement Plans for Small Business
Tax-year settings last reviewed: August 11, 2026.
Educational use only. This estimator provides a simplified, general estimate based solely on the information entered and the selected tax-year settings. It is not tax, legal, accounting, financial, or investment advice, is not IRS-approved, and does not guarantee any tax savings or the avoidance of any tax, interest, or penalty.
Retirement-plan contribution rules depend on plan documents, compensation definitions, ownership, controlled-group rules, employee eligibility, contribution timing, tax year, filing deadlines, and other factors. Confirm all contribution amounts with a qualified tax and retirement-plan professional before funding or deducting a contribution.
Use of this calculator or website does not create a CPA-client, accountant-client, attorney-client, fiduciary, or other professional relationship with HW & Associates CPA PLLC. A professional relationship begins only when HW & Associates CPA PLLC accepts an engagement and the parties execute an applicable engagement agreement.
Do not enter Social Security numbers, employer identification numbers, bank-account details, payment-card information, IRS identity-protection PINs, tax returns, or other sensitive information. Calculator inputs and results are processed locally in the visitor's browser and are not intentionally saved or transmitted by this calculator.
