Who is eligible to open a Solo 401(k)?

A self-employed individual or owner-only business may establish a Solo 401(k) when the business has no common-law employees who meet the plan's eligibility requirements, other than the owner's spouse. Eligibility depends on the business structure, earned compensation, employee status, and terms of the plan document.

What are the Solo 401(k) contribution limits for 2026?

For 2026, an owner may make employee elective deferrals of up to $24,500, subject to compensation and the combined individual deferral limit across applicable plans. Total employee and employer contributions are generally limited to the lesser of 100% of eligible compensation or $72,000, excluding catch-up contributions. Participants age 50 or older may contribute an additional $8,000, for a potential total of $80,000. Eligible participants ages 60 through 63 may use the higher $11,250 catch-up contribution instead, for a potential total of $83,250. Special contribution calculations apply to self-employed individuals.

Can I make both pre-tax and Roth contributions to a Solo 401(k)?

Yes, when permitted by the plan document. Employee elective deferrals may be made as traditional pre-tax contributions, designated Roth after-tax contributions, or a combination of both. The combined contributions remain subject to the same annual employee elective-deferral limit.

What investment options are available in a Solo 401(k)?

Available investments depend on the Solo 401(k) plan document, trustee, custodian, and investment platform. IRA Club SBS supports integration with iFlip for AI-powered investing and may support permitted alternative investments such as real estate, private equity, precious metals, cryptocurrency, tax liens, and private loans. IRA Club SBS does not provide investment or structuring advice, make investment recommendations, or perform due diligence for account holders.

Can I take a loan from my Solo 401(k)?

A Solo 401(k) may permit participant loans when loan provisions are included in the plan document. The maximum loan is generally the lesser of 50% of the participant's vested account balance or $50,000. Loan repayment and other requirements must be followed to prevent the outstanding amount from being treated as a taxable distribution.

How do I set up a Solo 401(k) for my business?

To establish a Solo 401(k), the business adopts a written plan document, selects a trustee or plan provider, opens the plan account, and completes the required employer and participant documentation. IRA Club SBS onboarding specialists can assist with plan design, account setup, contribution options, and administrative requirements.

What are the tax benefits of a Solo 401(k) for self-employed individuals?

Traditional employee elective deferrals are generally made on a pre-tax basis, while eligible employer contributions may generally be deductible subject to applicable limits. Designated Roth contributions are made after tax, and qualified Roth distributions may be received tax-free when the applicable requirements are satisfied.

Can I roll over other retirement accounts into a Solo 401(k)?

A Solo 401(k) may accept eligible rollover distributions when the plan document permits them. Eligible sources may include pre-tax assets from a Traditional IRA, SEP IRA, former employer 401(k), 403(b), governmental 457(b), or another qualified retirement plan. Roth IRA assets cannot be rolled into a Solo 401(k). Designated Roth assets from another employer plan may be accepted into the plan's designated Roth account when permitted.

What happens if I hire employees after opening a Solo 401(k)?

If the business hires common-law employees who satisfy the plan's eligibility requirements, those employees generally must be included in the plan. The plan will no longer operate solely as a one-participant plan and may become subject to nondiscrimination testing, participant notices, reporting, and other standard 401(k) requirements unless an applicable exemption or safe harbor applies.

What is a SEP IRA and how does it work for small businesses?

A Simplified Employee Pension, or SEP IRA, is an employer-funded retirement arrangement for self-employed individuals and businesses. Employers make discretionary contributions to SEP-IRAs established for eligible employees, including eligible business owners. Contributions are immediately vested, and the employer may generally decide each year whether to contribute.

Who is eligible to set up a SEP IRA?

A business of any size may establish a SEP IRA, including a sole proprietorship, partnership, limited liability company, S corporation, or C corporation. SEP IRAs are commonly used by self-employed individuals and businesses with few employees, but they are not limited to owner-only businesses.

What are the SEP IRA contribution limits for 2026?

For 2026, employer contributions for an eligible employee are limited to the lesser of 25% of eligible compensation or $72,000. Special calculations apply when determining the allowable contribution for a self-employed business owner.

Are SEP IRA contributions tax-deductible for small business owners?

Employer SEP IRA contributions are generally deductible as a business expense, subject to applicable deduction limits and tax rules. Investment earnings generally grow tax-deferred until they are distributed from the account.

Can employees contribute to their own SEP IRA accounts?

Employees cannot make salary-deferral or catch-up contributions under a standard SEP plan because SEP contributions are funded by the employer. However, an employee may be able to make a regular annual Traditional IRA contribution to the same SEP-IRA when permitted by the financial institution, subject to the normal IRA contribution rules.

What are the main benefits of a SEP IRA for small businesses?

SEP IRAs offer relatively high contribution limits, flexible annual employer funding, immediate vesting, straightforward setup, and generally lower administrative requirements than many qualified retirement plans. Employers normally do not file an annual Form 5500 for a SEP plan.

How are SEP IRA contributions allocated among employees?

Under a standard SEP arrangement, an employer generally contributes the same percentage of eligible compensation for every eligible participant, including the business owner. Contributions must follow the allocation formula in the SEP plan document and applicable compensation limits.

What investment options are available in a SEP IRA?

IRA Club SBS supports traditional investment options and integration with iFlip for AI-powered investing. Permitted alternative investments may include real estate, private equity, precious metals, cryptocurrency, tax liens, and private loans. IRA Club SBS does not provide investment or structuring advice, make investment recommendations, or perform due diligence for account holders.

When is the deadline to set up and fund a SEP IRA for the previous tax year?

A SEP plan may generally be established for a tax year as late as the due date of the business's federal income tax return, including extensions. Employer contributions intended to be deducted for that year generally must also be made by the applicable tax-return due date, including extensions.

What are the withdrawal rules and penalties for SEP IRAs?

SEP IRA withdrawals are generally taxable as income. A distribution taken before age 59½ may also be subject to a 10% additional tax unless an exception applies. SEP IRA owners generally must begin required minimum distributions after reaching the applicable RMD age, which is currently age 73.

What is a Safe Harbor 401(k) and how does it work?

A Safe Harbor 401(k) is an employer-sponsored retirement plan that uses required employer contributions and other safe-harbor provisions. When the applicable requirements are satisfied, the plan is generally exempt from the annual ADP and ACP nondiscrimination tests that apply to traditional 401(k) plans.

What are the employer contribution requirements for a Safe Harbor 401(k)?

A traditional Safe Harbor 401(k) generally uses either a nonelective contribution of at least 3% of compensation for eligible employees or a qualifying matching formula. A common basic match is 100% of the first 3% an employee defers plus 50% of the next 2%. Other qualifying enhanced matching or automatic-enrollment safe-harbor formulas may also be available.

What are the 2026 Safe Harbor 401(k) contribution limits?

For 2026, employees may make combined traditional and designated Roth 401(k) elective deferrals of up to $24,500. If the plan permits catch-up contributions, participants age 50 or older may contribute an additional $8,000. Eligible participants ages 60 through 63 may use the higher $11,250 catch-up contribution instead. The combined employee and employer contribution limit is generally the lesser of 100% of compensation or $72,000, excluding eligible catch-up contributions.

How does a Safe Harbor 401(k) benefit small business owners?

A Safe Harbor 401(k) can reduce the risk of ADP and ACP testing failures, provide more predictable employer contribution requirements, and make it easier for owners and highly compensated employees to contribute without corrective refunds caused by those tests. It can also help businesses offer a competitive employee retirement benefit.

How is a Safe Harbor 401(k) different from a traditional 401(k)?

A traditional 401(k) may be subject to annual ADP and ACP nondiscrimination testing. A Safe Harbor 401(k) uses required employer contributions and satisfies additional safe-harbor rules so that it can generally avoid those tests. Traditional safe-harbor contributions are generally fully vested when made, while certain QACA safe-harbor contributions may use up to a two-year vesting schedule.

When is the deadline to start a Safe Harbor 401(k) plan for 2026?

For certain new calendar-year plans using a matching safe-harbor design, October 1, 2026 is generally the practical latest effective date because the first safe-harbor plan year must usually operate for at least three months. Different deadlines and amendment rules apply to nonelective safe-harbor designs, existing plans, QACA arrangements, and other circumstances, so employers should confirm the applicable deadline with their plan administrator.

Can I offer a Safe Harbor 401(k) with automatic enrollment or Roth options?

Yes. A Safe Harbor 401(k) may include automatic enrollment, and a qualified automatic contribution arrangement, or QACA, is a specific safe-harbor design with automatic enrollment requirements. The plan may also permit both traditional pre-tax and designated Roth 401(k) employee contributions when those options are included in the plan document.

How do AI-powered and alternative investments integrate with a Safe Harbor 401(k)?

IRA Club SBS describes integration with iFlip for AI-powered investing and may support permitted alternative investment arrangements depending on the plan's design and investment platform. Available investments are subject to the plan document, applicable fiduciary requirements, and participant eligibility. IRA Club SBS does not provide investment or structuring advice.

What are the compliance advantages of Safe Harbor 401(k) plans?

When all safe-harbor requirements are satisfied, the plan is generally exempt from annual ADP and ACP nondiscrimination testing. A Safe Harbor 401(k) is not automatically exempt from every compliance requirement. A top-heavy exemption may apply when the plan consists solely of qualifying safe-harbor contributions and meets the applicable conditions.

How much does it cost to set up and maintain a Safe Harbor 401(k)?

IRA Club SBS lists its customized Safe Harbor 401(k) service as starting at $2,950 annually, plus an active participation fee. Final pricing may depend on the plan design, number of participants, administration requirements, payroll integration, and selected services.

What is a Traditional or Roth 401(k) plan and how does it work?

A 401(k) is an employer-sponsored retirement plan that allows eligible employees to save through payroll deductions. Traditional 401(k) contributions are generally made before federal income tax, while designated Roth 401(k) contributions are made after tax. A plan may offer one or both contribution options.

How can a Traditional or Roth 401(k) help my small business and employees?

A 401(k) can help a business attract and retain employees, provide higher contribution limits than individual IRAs, and give employees a structured way to save for retirement. Employer contributions may also be deductible, subject to applicable tax rules and plan limits.

What are the annual contribution limits for a Traditional or Roth 401(k)?

For 2026, employees may make combined Traditional and designated Roth 401(k) elective deferrals of up to $24,500. If permitted by the plan, participants age 50 or older may contribute an additional $8,000. Eligible participants ages 60 through 63 may use the higher $11,250 catch-up contribution instead. Combined employee and employer contributions are generally limited to the lesser of 100% of compensation or $72,000, excluding eligible catch-up contributions.

Who is eligible to participate in a Traditional or Roth 401(k) plan?

Eligibility is defined in the plan document and must comply with federal participation rules. A plan may offer immediate eligibility or generally require employees to reach age 21 and complete up to one year of service before making elective deferrals. Additional rules may apply to eligible long-term part-time employees.

What investment choices are available in a Traditional or Roth 401(k)?

Available investments depend on the plan's design and investment platform. IRA Club SBS systems integrate with iFlip for AI-powered investing and may support permitted alternative investments such as real estate, private equity, precious metals, cryptocurrency, tax liens, and private loans. IRA Club SBS does not provide investment or structuring advice, make investment recommendations, or conduct due diligence for participants.

What are the tax benefits of a Traditional or Roth 401(k)?

Traditional 401(k) elective deferrals generally reduce current federal taxable income, and earnings grow tax-deferred until distributed. Designated Roth 401(k) contributions are made after tax, and qualified distributions of contributions and earnings may be received tax-free when applicable requirements are satisfied.

Can my business match employee contributions?

Yes. A business may make matching contributions based on employee elective deferrals or use another employer contribution formula allowed by the plan. Employer contributions may generally be deductible, subject to applicable limits, and may follow a vesting schedule unless the plan requires immediate vesting.

What happens if an employee withdraws funds early?

A taxable 401(k) distribution received before age 59½ may be subject to ordinary income tax and an additional 10% tax unless a specific exception applies. A hardship distribution may permit access to plan funds, but hardship status alone does not automatically exempt the distribution from the additional 10% tax.

What are required minimum distributions for Traditional and Roth 401(k) accounts?

Traditional 401(k) accounts are generally subject to required minimum distributions beginning at the applicable RMD age, which may be age 73 or 75 depending on the participant's date of birth. Some participants in a current employer's plan may delay RMDs until retirement if the plan permits and they are not 5% owners. Designated Roth 401(k) accounts are not subject to lifetime RMDs for the original owner.

How do I get started with a Traditional or Roth 401(k) for my business?

Schedule a consultation with IRA Club SBS to discuss workforce size, eligibility, contribution options, employer matching, investment arrangements, payroll integration, compliance requirements, and the plan structure that may be appropriate for the business.

What is a SIMPLE IRA and how does it work for small businesses?

A SIMPLE IRA is a retirement plan generally available to employers with 100 or fewer employees who earned at least $5,000 during the preceding calendar year. Eligible employees may make salary-reduction contributions, and the employer must make matching or nonelective contributions.

Who is eligible to participate in a SIMPLE IRA plan?

Generally, an employee is eligible if they received at least $5,000 in compensation from the employer during any two preceding calendar years and are reasonably expected to receive at least $5,000 during the current year. Employers may use less restrictive eligibility requirements.

What are the contribution limits for SIMPLE IRAs in 2026?

For 2026, the standard employee salary-reduction contribution limit is $17,000. A higher $18,100 limit applies to certain applicable SIMPLE plans. The general catch-up contribution for eligible participants age 50 or older is $4,000, while a $3,850 catch-up applies to certain plans using the higher contribution limit. Eligible participants ages 60 through 63 may use the higher $5,250 catch-up contribution instead.

How does employer matching work in a SIMPLE IRA?

Employers generally choose between matching employee salary-reduction contributions dollar-for-dollar up to 3% of compensation or making a 2% nonelective contribution for each eligible employee. Certain employers with 26 to 100 employees must provide enhanced employer contributions to use the higher employee contribution limit.

What are the main benefits of a SIMPLE IRA for small business owners?

A SIMPLE IRA is generally less complex and less expensive to establish and administer than many qualified retirement plans. It does not normally require an annual employer IRS return, employer contributions may be deductible, and it provides employees with a structured retirement savings benefit.

How do employees make contributions to a SIMPLE IRA?

Employees elect to contribute a specified dollar amount or percentage of compensation through automatic payroll deductions. These salary-reduction contributions are generally made on a pre-tax basis for federal income-tax purposes and deposited into each employee's SIMPLE IRA.

What investment options are available in a SIMPLE IRA?

IRA Club SBS systems integrate with iFlip for AI-powered investing and support permitted alternative investments such as real estate, private equity, precious metals, cryptocurrency, tax liens, and private loans. IRA Club SBS does not provide investment or structuring advice, make investment recommendations, or conduct due diligence for account holders.

Are SIMPLE IRA contributions tax-deductible?

Employee salary-reduction contributions generally reduce federal taxable income for the year in which they are made. Employer matching and nonelective contributions are also generally deductible as business expenses, subject to applicable tax rules.

What are the rules for withdrawing money from a SIMPLE IRA?

SIMPLE IRA withdrawals are generally taxable. A taxable withdrawal before age 59½ may also be subject to a 10% additional tax unless an exception applies. The additional tax generally increases to 25% when the withdrawal occurs within the first two years of participation.

How do I set up a SIMPLE IRA plan for my small business?

An employer can establish a SIMPLE IRA using IRS Form 5304-SIMPLE, Form 5305-SIMPLE, or an approved financial institution's prototype plan document. The employer must provide required information to eligible employees and establish a SIMPLE IRA account for each eligible participant.

What is a payroll deduction IRA, and how does it work?

A payroll deduction IRA allows employees to contribute automatically to an individual Traditional or Roth IRA through after-tax paycheck deductions. The employee opens the IRA, authorizes a deduction amount, and the employer forwards the authorized contribution to the employee's IRA each pay period.

How Much Do You Need to Retire? A Complete Retirement Planning Guide for Small Business Owners

August 20, 2026
Est. Read Time: 4 minutes

Introduction

The question “How much do I need to retire?” does not have a single answer. A retirement savings goal depends on expected expenses, retirement income sources, time horizon, inflation assumptions, healthcare costs, and existing assets.

Employees may have access to employer-sponsored retirement plans, employer contributions, and predictable income. Small business owners may have fluctuating income, make contributions at irregular intervals, and be responsible for establishing and maintaining their own retirement plans.

Business owners may have access to plan structures such as Solo 401(k)s, SEP IRAs, and SIMPLE IRAs. Each plan follows different contribution limits, employee eligibility, and administrative rules.

This retirement planning guide explains common methods for estimating a retirement savings goal, factors that affect retirement income planning, and retirement plan structures available to small business owners.

The 25x and 4% Guidelines as Starting Estimates

One common retirement planning method is the 25x rule, which is related to the 4% rule.

The 25x calculation uses the following steps:

Estimate the annual amount that would need to come from retirement savings.
Multiply that amount by 25.
Use the result as a general retirement savings estimate.

For example:

Desired retirement income from savings: $60,000 per year
$60,000 × 25 = $1.5 million

The 4% rule approaches the calculation from the opposite direction. It uses an initial withdrawal equal to approximately 4% of retirement savings as a general planning assumption.

Using that guideline:

$1 million in retirement savings corresponds to an initial annual withdrawal of approximately $40,000.
$1.5 million corresponds to an initial annual withdrawal of approximately $60,000.

These calculations are general estimates, not guarantees. They do not account for investment performance, inflation, taxes, healthcare expenses, changes in spending, retirement length, or other income sources.

For small business owners, the estimate may also be affected by fluctuating income, irregular contribution patterns, business assets, and the retirement plan structure used. The 25x rule can serve as an initial calculation rather than a final retirement savings goal.

Factors That Affect Your Retirement Number

Retirement savings estimates vary based on each person’s expected expenses, income sources, time horizon, and financial circumstances.

Desired Retirement Income

Expected annual retirement spending is a primary factor in calculating a retirement savings goal. Housing, travel, hobbies, taxes, and healthcare expenses may affect the amount of income needed during retirement.

Social Security Benefits

Social Security can provide part of your retirement income, but the amount depends on factors such as covered earnings and the age at which benefits begin. Social Security may be included as one source in retirement income planning rather than treated as the only source.

Healthcare Costs

Healthcare expenses may increase with age. Estimated premiums, out-of-pocket costs, and long-term care expenses may affect a retirement savings calculation.

Your Retirement Timeline

The number of years until retirement affects the available contribution period and the length of time investments may remain in the account.

Someone with 25 years before retirement has a longer contribution period and more time for potential investment growth than someone planning to retire within the next decade. Investment growth is not guaranteed.

Inflation

The cost of living changes over time.

Money that feels sufficient today may purchase less in the future, making inflation an important consideration when setting a long-term retirement savings goal.

Existing Assets

Your retirement savings aren’t limited to retirement accounts.

Investment accounts, savings, real estate, and other assets can all be included when estimating available retirement income. Asset values, income, expenses, liquidity, and tax treatment may differ.

Why Small Business Owners Often Have a Bigger Gap

Business owners may face retirement planning factors that differ from those of employees.

No Employer Match

Many employees receive matching retirement contributions from their employer.

Small business owners generally fund retirement contributions through business income or personal compensation. Depending on the plan, the business owner may contribute in both the employee and employer capacities.

Irregular Income

Revenue doesn’t always arrive on a predictable schedule.

During busy years, retirement contributions may be significant. During slower periods, retirement savings often become a lower priority.

Changes in contribution amounts and timing may affect progress toward a long-term retirement savings goal.

Reinvesting in the Business

Many entrepreneurs choose to invest in equipment, employees, inventory, or expansion before investing in retirement.

Business assets may be included in retirement income planning, but their future value, liquidity, and availability are uncertain. Relying primarily on the business may result in fewer retirement assets outside the company.

No Traditional Pension

Most small business owners don’t have access to pension benefits.

Retirement income may instead come from personal savings, employer-sponsored retirement accounts established through the business, Social Security, business assets, and other investments.

These factors may create a difference between a business owner’s current savings and estimated retirement savings goal. All retirement plans use different contribution, eligibility, and administrative structures that may affect how retirement savings are funded.

Retirement Plan Structures Available to Business Owners

Available retirement plan structures depend on business ownership, employee eligibility, compensation, contribution methods, and administrative requirements. A few options IRA Club SBS offers are below:

Solo 401(k)

A Solo 401(k) may be available to a self-employed business owner with no eligible common-law employees other than a spouse. For 2026, employee elective deferrals are limited to $24,500. Combined employee and employer contributions are subject to the $72,000 defined contribution annual additions limit. An $8,000 catch-up contribution may apply separately for eligible participants age 50 or older, subject to compensation, plan terms, and applicable IRS rules.

SEP IRA

A SEP IRA permits employer contributions for self-employed individuals and eligible employees. For 2026, contributions are limited to $72,000 and remain subject to eligible compensation, applicable contribution calculations, plan terms, and IRS rules.

SIMPLE IRA

A SIMPLE IRA permits employee elective deferrals and requires employer matching or nonelective contributions. For 2026, employee elective deferrals are limited to $17,000, subject to compensation, plan terms, and applicable IRS rules.

Using the 4% Guideline to Estimate a Retirement Savings Target

The following hypothetical example shows how the 4% guideline may be used in retirement income planning.

Suppose the estimated annual retirement income is:

$80,000

Estimated annual Social Security income is:

$15,000

The remaining annual amount expected from retirement savings is:

$80,000 − $15,000 = $65,000

Using the 4% guideline:

$65,000 ÷ 0.04 = $1,625,000

In this example, the estimated retirement savings goal would be approximately $1.625 million.

This calculation is a general planning estimate, not a prediction or guarantee. It does not account for taxes, inflation, healthcare costs, investment performance, changes in Social Security income, or the length of retirement.

The retirement savings calculator provides general estimates based on inputs such as current savings, contribution amounts, expected retirement age, and assumed rates of return. Calculator results do not predict investment performance or future account values.

How to Get There: A Simple Retirement Savings Framework

Retirement planning can be organized into three general steps for estimating a savings goal, comparing plan structures, and establishing a contribution process.

1. Estimate a Retirement Savings Target

A retirement savings estimate may begin with expected retirement expenses and available income sources. The 25x guideline and a retirement savings calculator may be used as general planning tools, but their results do not predict future account values or retirement income.

2. Compare Retirement Plan Structures

Solo 401(k), SEP IRA, and SIMPLE IRA plans follow different employee eligibility, contribution, and administrative rules. The available plan structure depends on business ownership, employee status, compensation, plan terms, and applicable IRS requirements.

3. Establish a Contribution Process

Contributions may be made on a scheduled basis or adjusted as business income changes, subject to plan terms and annual IRS limits. Automated contribution features may reduce manual processing when supported by the plan and payroll provider.

Retirement savings estimates, plan requirements, and contribution amounts may need to be reviewed as business and financial circumstances change.

Frequently Asked Questions

How much should I save for retirement each year?

A commonly cited retirement savings benchmark is 15% of gross income. The amount used in a retirement savings estimate may vary based on income, expected expenses, time horizon, existing assets, and other retirement income sources.

Business owners may contribute through a Solo 401(k), SEP IRA, or SIMPLE IRA, as a few options, subject to business structure, employee eligibility, compensation, plan terms, and annual IRS limits.

Can I retire with $1 million?

It depends on your lifestyle, retirement expenses, and withdrawal strategy. Using the 4% rule, $1 million in retirement savings corresponds to an initial annual withdrawal estimate of approximately $40,000. This guideline does not guarantee that the funds will last throughout retirement. Additional income sources, including Social Security, may change your overall retirement picture.

What is the 4% rule for retirement?

The 4% rule is a general retirement planning guideline that uses an initial annual withdrawal equal to approximately 4% of retirement savings. It does not guarantee that savings will last throughout retirement. The guideline may be evaluated alongside expected expenses, other income sources, retirement length, inflation, taxes, and financial circumstances.

How do small business owners save for retirement?

Small business owners may use retirement plans like, but not limited to, a Solo 401(k), SEP IRA, or SIMPLE IRA. Each plan follows different contribution limits, employee eligibility, and administrative rules for self-employed individuals and employers.

At what age should I start saving for retirement?

Starting at a younger age provides a longer contribution period and more time for potential compounded growth, although investment growth is not guaranteed. People who begin saving later may still contribute toward a retirement savings goal, subject to available income, plan terms, and annual IRS limits.

Does Social Security count toward my retirement number?

Yes. Social Security can be an important source of retirement income. Estimated benefits may be included in retirement planning, but the amount depends on factors such as covered earnings and the age at which benefits begin.

Retirement Planning Resources for Business Owners

Small business owners may use the retirement savings calculator to estimate a retirement savings goal based on the information entered. Calculator results are general estimates and do not predict investment performance or future account values.

Schedule Your Free Consultation with a Small Business Specialist

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