Maximizing 2026 Retirement Tax Deferrals

Organizations looking to maximize their retirement contributions and deductions may require a new approach to their plan strategies. But when should an organization shift plans, and what plans are best for different organizations? 

Below, we’ve listed a series of retirement plans and the size/type of organization they may be best for. Each option offers a more advanced structure to reach higher contribution limits. Some structures also offer combined plans to provide even higher contributions, particularly for high earners.

Six Retirement Plan Structures to Maximize Contributions and Deductions in 2026

The following plan structures offer benefits to businesses at different stages of growth, beginning at the top of the list with smaller organizations.

6. Simple IRA 

Simple IRAs require employer matching and offer immediate vesting. making them best for small businesses with fewer to no team members and lower revenue.

Best for: Small businesses with fewer to no team members and lower revenue.

5. SEP IRA 

SEP IRAs offer no employee deferrals. Contributions are immediately vested, but contributions must be the same percentage for all eligible employees, making them often better suited for small organizations.

Best for: Self-employed or small employers with few or no employees.

4. Standalone 401(k)  

401(k)s are often the first plan when people think of retirement. Standard standalone 401(k) plans can help reduce taxable income, and if the employer opts for it, matching contributions to incentivize employee savings. However, 401(k) plans can be more expensive and complex for employers than SIMPLE-IRAs or SEPs.

Best for: Small to midsize businesses with employees 

3. 401(k) + Safe Harbor Match 

This plan structure provides many of the same benefits as a standard 401(k) and the safe-harbor feature generally allows the highly compensated employees to maximize their deferrals.

Best for: Businesses looking to allow highly compensated employees to maximize their deferrals.

2. 401(k) + New Comparability Profit-Sharing 

This plan structure allows larger employer contribution allocations to seasoned employees.

Best for: Business owners wanting to maximize contributions for a select group while controlling staff costs.

1. 401(k)/Profit-Sharing and Market-Based Cash Balance Plan 

This plan structure combines the transparency of a 401(k) plan with the increased tax-deferral limits of a Cash Balance plan to offer the best of both approaches. The features of a Defined Benefit plan also make retirement from this structure predictable. Read our complete guide to cash balance plans to learn more about the advantages of this plan structure.

Best for: High-earning owners, partners, and professionals seeking maximum contributions and deductions.

Start Designing Your Plan Today 

Whether you need to reward key executives, reduce tax exposure, or boost retention with long-term wealth-building benefits, October Three can help. Request your free Cash Balance illustration today.