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457 Plan Contribution Effects on Your Paycheck Calculator

An employer-sponsored retirement savings account could be one of your best tools for creating a secure retirement. Pre-tax contributions are tax-deferred, you only pay taxes on contributions and earnings when the money is withdrawn. After-tax contributions are after-tax and are tax free when the money is withdrawn. Use this calculator to see how increasing your contributions to a 457 plan can affect your paycheck as well as your retirement savings. This calculator uses the latest withholding schedules, rules and rates (IRS Publication 15).

457 Plan Contribution Effects on Your Paycheck Calculator Definitions

Retirement savings current
This is the percentage of your annual salary you contribute to your retirement plan each year. While your plan may not have a deferral percentage limit, this calculator limits deferrals to 75% to account for FICA (Social Security and Medicare) taxes.
Retirement savings new
This is the new percentage of your annual salary you would like to compare your current contributions to. While your plan may not have a deferral percentage limit, this calculator limits deferrals to 75% to account for FICA (Social Security and Medicare) taxes.
Gross pay
This is your gross pay, before any deductions, for the pay period. Please enter a dollar amount from $1 to $1,000,000.
Pay period
This is how often you are paid. Your selections are: Weekly (52 paychecks per year), Every other week (26 paychecks per year), Twice a month (24 paychecks per year), and Monthly (12 paychecks per year).
Filing status
This is your income tax filing status. The choices are "Single" and "Married." Choose "Married" if you are married or file as "Head of household." Choose "Single" if you file your taxes as a single person or if you are married but file separately.
Number of allowances
When your Federal income tax withholding is calculated, you are allowed to claim allowances to reduce the amount of the Federal income tax withholding. In 2017, each allowance you claim is equal to $4,050 of income that you expect to have in deductions when you file your annual tax return. The number of allowances you should claim depends largely on the number of dependents you have and your itemized deductions. This calculator allows from 0 to 99 allowances.
State and local taxes
This is the percentage that will be deducted for state and local taxes. We take your gross pay, minus $4,050 per allowance, times this percentage to calculate your estimated state and local taxes. Please note, this calculator can only estimate your state and local tax withholding. The tax rate displayed is an assumption that may or may not be relevant to your situation.
Pre-tax deductions
Enter any payroll deductions made by your employer that are made with pre-tax income. This might include your health insurance, life insurance among other pre-tax deductions.
Post-tax deductions
Enter any payroll deductions made by your employer that are made with after-tax income.
Post-tax reimbursements
Enter any reimbursements made by your employer that are after-tax.
Expected annual salary change
The expected annual increase in your salary. We use this to project future contributions and matches to your savings plan.
Year to date income
Income from your employer that you have been paid during the current year, before the current payroll period. We use this amount to determine if you are still required to pay FICA OASDI for the current payroll period.
Social Security tax
For 2017, Social Security tax is calculated as your gross earnings times 6.2%. For 2017, incomes over $127,200 that have already had the maximum Social Security tax of $7,886 withheld will not have additional withholding. Please note that if you have other wages or employers this calculator does not make any assumptions as to the total Social Security tax withheld for the current year other than the actual inputs for this calculator. This tax is also referred to as the Federal Insurance Contributions Act Old Age Survivors and Disability Insurance (FICA OASDI).
Medicare tax
Medicare tax is calculated as your gross earnings times 1.45%. Unlike the Social Security tax, there is no annual limit to the Medicare tax. Starting in 2013, an additional Medicare tax of 0.9% is withheld on all gross earnings paid in excess of $200,000 in a calendar year. If you enter an amount for the year-to-date gross earnings, this additional Medicare tax will be calculated based on the current period's gross earnings that exceed the annual $200,000 threshold. If no year-to-date amount is entered, any additional Medicare tax withholding will be calculated only for any gross earnings in excess of $200,000 for the current payroll period. If year-to-date wages prior to the current payroll period have exceeded $200,000, the year-to-date wages must be entered to calculate an accurate additional Medicare tax.
Federal tax withholding calculations
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Plan type
Choose the type of 457 plan contributions. The choices are pre-tax and after-tax.
Current balance
The current balance of your retirement plan.
Current age
Your current age.
Age of retirement
Age you wish to retire. This calculator assumes that the year you retire, you do not make any contributions. So if you retire at age 65, your last contribution occurs when you are actually 64.
Annual contribution limits
Your total contribution for one year is based on your annual salary times the percent you contribute. However, your annual contribution is also subject to certain maximum total contributions per year. The annual maximum for 2017 is $18,000. If you are age 50 or over, a 'catch-up' provision allows you to contribute additional $6,000 into your account. It is also important to note that employer contributions do not affect an employee's maximum annual contribution limit. The catch-up amount is indexed for inflation in increments of $500.

It is important to note that some employees are subject to another form of contribution limitations. Employees classified as 'Highly Compensated' may be subject to contribution limits based on their employer's overall participation. If you expect your salary to be $120,000 or more in 2017 or was $120,000 or more in 2016, you may need to contact your employer to see if these additional contribution limits apply to you.