SIMPLE IRA Contribution Calculator

Determine the optimal amount to contribute to your SIMPLE IRA. This calculator helps you compare your current contribution rate to a proposed new rate, showing you exactly how it impacts your annual retirement savings, employer contributions, take-home pay, and potential tax savings. See the trade-offs clearly and make an informed decision to accelerate your retirement goals.

This tool is designed for employees of small businesses that offer a Savings Incentive Match Plan for Employees (SIMPLE) IRA. If you are self-employed or a business owner exploring retirement plans, you might also find our SEP IRA Contribution Calculator or resources on Solo 401(k)s useful. For a broader view of your financial future, use the main Retirement Calculator to see how these contributions fit into your overall plan.

The results provide a clear, side-by-side comparison. You'll see a contribution optimization score, summary cards highlighting the key changes, a bar chart visualizing the impact on your finances, and a detailed table breaking down the numbers. The calculator also generates actionable insights to help you understand your options, such as capturing the full employer match or utilizing catch-up contributions.

Start by entering your financial details into the "Income & Contributions" section. Input your Annual Salary before any deductions. Then, enter your Current Deferral Rate—the percentage you are currently saving—and the Proposed Deferral Rate you are considering. Finally, add the number of Pay Periods Per Year (e.g., 26 for bi-weekly pay or 24 for semi-monthly) to see the per-paycheck impact.

Next, provide your tax information. Enter your marginal Federal Tax Bracket and your State Tax Rate. These numbers are crucial for estimating your annual tax savings from pre-tax SIMPLE IRA contributions. If your state has no income tax, enter 0 for the state rate.

For a more precise calculation, open the "Advanced Settings." Here you can specify the Employer Match Type. A SIMPLE IRA typically requires the employer to either make a dollar-for-dollar matching contribution up to 3% of your salary or a non-elective contribution of 2% for all eligible employees. Check with your plan administrator to see which one applies to you. You can also indicate if you are Catch-Up Eligible. If you are age 50 or over, you can contribute an additional amount above the standard limit.

Once all fields are complete, click "Calculate" to see a full breakdown of your current versus proposed savings plan.

Annual Salary

This is your gross annual income before taxes or any other deductions. The calculator uses this figure as the basis for calculating your employee contribution percentage and your employer's matching contribution.

Current & Proposed Deferral Rate

Your deferral rate is the percentage of your gross salary you contribute to your SIMPLE IRA. The calculator compares your Current Deferral Rate with a Proposed Deferral Rate to show you the financial impact of saving more. Increasing this rate is the most direct way to boost your retirement savings.

Pay Periods Per Year

This input determines how your annual salary and contributions are broken down into individual paychecks. Common values are 26 for bi-weekly pay, 24 for semi-monthly, or 52 for weekly. An accurate number here provides a realistic look at how a change in your deferral rate will affect your take-home pay each pay period.

Federal & State Tax Rates

Because SIMPLE IRA contributions are made pre-tax, they lower your taxable income. Your marginal Federal Tax Bracket and State Tax Rate are used to calculate the value of this tax deduction. The higher your combined tax rate, the greater the immediate tax savings you receive for each dollar you contribute. For more on taxes in retirement, see our guide on how 401(k) withdrawals are taxed, as similar principles apply.

Employer Match Type

This is a key feature of SIMPLE IRAs. Your employer must contribute, but they have two options:

1. Matching Contribution: The employer matches your contributions dollar-for-dollar, up to 3% of your salary. To get this full match, you must contribute at least 3% yourself.
2. Non-elective Contribution: The employer contributes 2% of your salary for you, regardless of whether you contribute anything at all.

Capturing the full employer match is one of the most effective ways to increase your retirement savings.

Catch-Up Eligible (Age 50+)

Federal regulations allow individuals aged 50 and over to make additional "catch-up" contributions to their retirement accounts. For a SIMPLE IRA in 2026, this allows you to contribute an extra $3,500 above the standard employee limit. Under the SECURE 2.0 Act, those aged 60-63 can make a "super catch-up" contribution of $5,250 (instead of $3,500), raising their total limit to $21,750. If you are 50 or older, enabling this option will show you how much more you can save.

This calculator performs a side-by-side analysis of two scenarios: your current savings plan and a proposed one. It calculates the financial outcomes for each and then highlights the differences.

First, it determines your annual employee contribution for both scenarios by multiplying your Annual Salary by your Current and Proposed Deferral Rates. These amounts are capped at the official IRS limits for the year.

Next, it calculates the employer contribution based on the Employer Match Type you select. For a 3% match, it calculates the lesser of your contribution or 3% of your salary. For a 2% non-elective plan, it simply calculates 2% of your salary.

The calculator then determines your tax savings. The increase in your annual contribution (from current to proposed) is multiplied by your combined federal and state marginal tax rate. This shows the amount of tax you avoid paying by increasing your pre-tax deferrals.

Finally, it calculates the impact on your take-home pay. It subtracts your per-paycheck deferral from your gross pay per period to find your taxable income. It then applies your combined tax rate to estimate your net pay. The difference between the net pay in the current and proposed scenarios is your "Paycheck Reduction." This demonstrates that a $100 increase in your pre-tax contribution does not reduce your take-home pay by the full $100, thanks to the tax savings.

The calculations are performed for both the "Current" and "Proposed" scenarios using the same formulas.

Employee Contribution Formula

This formula calculates your annual contribution, ensuring it does not exceed the legal limits.

employee_limit = 16500 (for 2026)
catch_up_limit = 3500 (if age 50+)
max_employee_contribution = employee_limit + (if catch_up_eligible, catch_up_limit)

employee_contribution = min(annual_salary * (deferral_rate / 100), max_employee_contribution)

Employer Contribution Formula

The employer's contribution depends on the plan's rules.

For a 3% Match:

matchable_salary_percentage = min(employee_deferral_rate, 3)
employer_contribution = annual_salary * (matchable_salary_percentage / 100)

For a 2% Non-elective Contribution:

employer_contribution = annual_salary * 0.02

Tax Savings & Paycheck Impact Formulas

These formulas estimate how increasing your contribution affects your taxes and take-home pay.

combined_tax_rate = (federal_tax_bracket + state_tax_rate) / 100
increase_in_contribution = proposed_employee_contribution - current_employee_contribution
annual_tax_savings = increase_in_contribution * combined_tax_rate

gross_per_paycheck = annual_salary / pay_periods
deferral_per_paycheck = employee_contribution / pay_periods
taxable_per_paycheck = gross_per_paycheck - deferral_per_paycheck
net_pay_per_paycheck = taxable_per_paycheck * (1 - combined_tax_rate)

paycheck_reduction = current_net_pay_per_paycheck - proposed_net_pay_per_paycheck

A SIMPLE IRA (Savings Incentive Match Plan for Employees) is a type of tax-deferred retirement plan designed for small businesses, generally those with 100 or fewer employees. It offers a straightforward way for both employees and employers to contribute to retirement savings with less administrative complexity and cost than a traditional 401(k) plan.

Key features of a SIMPLE IRA include:

• Employee Contributions: Employees can make pre-tax contributions from their paycheck, reducing their current taxable income.
• Mandatory Employer Contributions: Employers are required to contribute to their employees' accounts, either through a match or a non-elective contribution.
• Lower Contribution Limits: The contribution limits are lower than those for a 401(k) but higher than a Traditional or Roth IRA.
• Immediate Vesting: All contributions, including those from the employer, are 100% vested immediately. This means the money is yours to keep, even if you leave the company.

A SIMPLE IRA can be an excellent retirement savings vehicle, especially for employees of small companies that don't offer a 401(k).

For 2026, the contribution limits for a SIMPLE IRA are as follows:

• Employee Contribution Limit: You can contribute up to $16,500 of your salary.
• Catch-Up Contribution (Age 50+): If you are age 50 or over, you can contribute an additional $3,500, for a total of $20,000.
• SECURE 2.0 "Super" Catch-Up (Ages 60-63): Under the SECURE 2.0 Act, those aged 60-63 can make a higher catch-up of $5,250 instead of the standard $3,500, for a total of $21,750.

Employer Contribution Rules for 2026: Employers must contribute using one of these two methods:

1. Matching Contribution: Match employee contributions dollar-for-dollar up to 3% of the employee's compensation.
2. Non-elective Contribution: Contribute 2% of each eligible employee's compensation, regardless of whether the employee contributes.

These employer contributions do not count toward the employee's contribution limit.

Small business owners and self-employed individuals have several retirement plan options. The best choice depends on business size, income, and savings goals.

For a deeper dive into SEP IRAs, use the SEP IRA contribution calculator. The Solo 401(k) often allows for the highest total contributions for high-income self-employed individuals.

• Contribution Optimization Score: This gauge shows how much of your maximum allowable employee contribution you are using with your proposed deferral rate. A higher score means you are closer to maxing out your plan.
• Summary Cards: These four cards provide a quick overview of the most important numbers: your total annual contribution (current vs. proposed), the per-paycheck reduction in your take-home pay, and the total annual tax savings from increasing your contribution.
• Current vs Proposed Comparison Chart: This bar chart visually represents the trade-off. You can see how increasing your retirement contributions lowers your annual take-home pay but increases your total savings and tax benefits.
• Detailed Contribution Comparison Table: This table provides a line-by-line breakdown, showing the dollar amounts for employee and employer contributions, the total going into your SIMPLE IRA, the net paycheck impact, and tax savings for both your current and proposed rates.
• Insights Panel: This section provides automated, actionable advice based on your inputs. It may highlight if you are missing out on the full employer match, have room to increase savings, or could benefit from catch-up contributions.

If you want to boost your retirement savings, here are several effective strategies:

1. Capture the Full Employer Match: If your employer offers a 3% match, your first goal should be to contribute at least 3% of your salary. Not doing so is like turning down free money.
2. Increase Your Deferral Rate by 1%: A small, 1% increase is often barely noticeable in your paycheck but can add up to tens of thousands of dollars over a career thanks to compounding.
3. Automate Annual Increases: Commit to increasing your deferral rate by 1% every year, perhaps when you get an annual raise. This "set it and forget it" approach makes saving more feel painless.
4. Max Out Your Contributions: If your budget allows, aim to contribute the full $16,500 (or $20,000 if 50+) to maximize your tax-deferred growth. See how much you should save for retirement each month for general guidelines.
5. Use Catch-Up Contributions: If you are age 50 or older, take full advantage of the additional $3,500 catch-up contribution allowance to supercharge your savings as you approach retirement.

1. Not Getting the Full Match: This is the most common and costly mistake. Always contribute enough to receive the maximum amount from your employer.
2. Forgetting to Increase Contributions with a Raise: When your salary increases, your contribution amount should too. If you contribute a flat dollar amount instead of a percentage, you'll need to manually adjust it to keep pace.
3. Ignoring the 2-Year Rule: Withdrawals from a SIMPLE IRA within the first two years of your initial contribution are subject to a steep 25% penalty, in addition to ordinary income tax. After two years, the early withdrawal penalty drops to the standard 10%.
4. Not Planning for Rollovers: When you leave your job, you can roll your SIMPLE IRA into another retirement account. However, you must wait two years from your first contribution to roll it into a non-SIMPLE IRA account like a Traditional IRA or 401(k). Before the two-year mark, you can only roll it into another SIMPLE IRA.