Maximum Allowable Contribution (MAC) Worksheet

Submit Maximum Allowable Contribution (MAC) Worksheet

Planning to contribute more than the basic annual limit? Use the worksheet for your plan:

403(b) MAC Worksheet – for the 15-year service-based or age 50+ catch-up. Complete it online and it will be submitted to your Payroll Department and Plan Administrator.
457(b) MAC Calculator – for the age 50+ or special 3-year catch-up. Print, sign and email the result to tpa@altamontclair.com.

Your 403(b) and 457(b) limits are separate, so you may contribute the maximum to both. For the basic and catch-up limits, see the Contributions Guidelines page. To check your eligibility for a service-based or 3-year catch-up, please have your prior years’ pay and contribution records handy.

Forms and Templates

Transaction Authorization Forms
Salary Reduction Agreement (SRA)
Maximum Allowable Contribution

457(b) Maximum Allowable Contribution (MAC) Calculator

Governmental 457(b) plans administered by Simplicity Alta Montclair

How 457(b) limits work. Your 457(b) limit is separate from your 403(b) limit, so you may contribute the maximum to both. For any one year, your 457(b) maximum is the larger of:

Basic limit + age-based catch-up (age 50 or older by December 31; a higher amount applies if you turn 60, 61, 62 or 63 that year), or
Special 3-year catch-up (only in the three calendar years before the year you reach your designated Normal Retirement Age).

The two catch-ups cannot be added together. Use this calculator if you are considering the 3-year catch-up; then print, sign and email the result to tpa@altamontclair.com. Nothing you enter here is saved or sent.

1. Participant

Employee name

Employer

Birth date

E-mail

2. Contribution year and compensation

Year you are calculating for

Expected includible compensation this year Gross pay from this employer, including your 403(b), 457(b) and Section 125 deductions.

3. Normal Retirement Age (needed only for the 3-year catch-up)

Designated Normal Retirement Age (NRA)

Year you reach NRA

Your 3-year catch-up window

My NRA is earlier than 65 because it is the earliest age I may retire with an immediate, unreduced benefit under my State or Employer defined benefit plan (as early as 40 for qualified police officers and firefighters). NRA may not be later than age 70½. Once you first use the 3-year catch-up, your NRA cannot be changed and applies to every eligible 457(b) plan of your Employer. I have used the 3-year catch-up in an earlier year (enter the amounts used below).

4. Prior years under this Employer's 457(b) plan(s)

For each year, enter your includible compensation from this Employer and the total you actually deferred to this Employer's 457(b) plan(s). Leave years blank before the plan's effective date or before you were first eligible. Unused amount = lesser of compensation or that year's limit, minus what you deferred (never below zero).

Tax year	A. Includible compensation	B. 457(b) limit	C. Lesser of A or B	D. Amount deferred	E. Unused (C − D)
Pre-2013 unused amounts (attach schedule; for years before 2002, the limit is also reduced by 403(b)/401(k) deferrals)
Less: 3-year catch-up amounts already used in earlier years (deferrals above the basic limit)
Total unused deferrals available					$0

I designate the Normal Retirement Age shown above for purposes of the 457(b) Special 3-Year Catch-Up and certify that the information above is accurate.

Participant signature

Date

Email the signed form to tpa@altamontclair.com. Please do not include your Social Security number.

Disclosure: This calculator is provided to assist you and reflects Simplicity Alta Montclair's interpretation of IRC §457(b) and Treas. Reg. §1.457-4(c). Results depend entirely on the information you enter; if it is incorrect, the results may be wrong and you may be liable for taxes and corrections on excess deferrals. You are responsible for the accuracy of your information. The 3-year catch-up may be used only in the three taxable years ending before the year you reach your designated Normal Retirement Age. If your prior-year FICA wages from this Employer exceeded the IRS threshold ($150,000 of 2025 wages for 2026), any age-based catch-up must be made as Roth contributions; this rule does not apply to the 3-year catch-up. Simplicity Alta Montclair is not licensed to and does not provide tax, accounting, or legal advice; please consult your tax advisor before using a catch-up provision.