MBOS Retirement Estimate NJ: How to Run and Read Your Pension Estimate

Your Estimate Is the Starting Point for Every Decision

Before selecting a payout option, choosing a retirement date, or deciding whether to purchase service credit, you need to see actual numbers — not projections, not rules of thumb. The MBOS retirement estimate generates dollar amounts based on your real posted salary and service records, and it is the closest thing to a preview of your retirement income.

Members within two years of retirement can generate estimates that use actual data rather than projections. Earlier estimates rely on assumptions about future salary growth and are less reliable.

How to Generate Your Estimate

Log into the Member Benefits Online System at the NJDPB portal. Navigate to the retirement section and select the option to generate a retirement estimate. You will be asked to input a prospective retirement effective date — remember, it must be the first of a month.

Run estimates for multiple dates. Comparing a July 1 retirement against a January 1 retirement, for example, shows you exactly what an extra six months of service and salary does to your monthly benefit. This is particularly useful if you are approaching a tier's normal retirement age or the 25-year service threshold.

What the Estimate Shows

The estimate displays projected monthly amounts under each of the nine payout options:

• Maximum Option: The highest monthly amount — this is your baseline for comparison.
• Option 1: Slightly below Maximum, with a declining reserve balance.
• Options 2, 3, 4: Joint-and-survivor amounts at 100%, 50%, and custom levels.
• Options A, B, C, D: Pop-up joint-and-survivor amounts at 100%, 75%, 50%, and 25%.

Each option's amount is calculated from three variables: your final average salary (FAS), your years of service credit, and the actuarial reduction factors for your age and your beneficiary's age (for survivor options).

How to Read the Key Fields

Final average salary: This is the average of your highest consecutive fiscal years of pensionable compensation — 3 years for Tiers 1-3, or 5 years for Tiers 4-5. Check it against your payroll records. If the FAS looks lower than expected, common causes include unreported salary, a fiscal year with unpaid leave, or the inclusion of a lower-salary year in the averaging window.

Years of service credit: This should match your employment history plus any purchased service. Verify that military time, transferred service, and purchased credits are all reflected. Missing service credit is the most actionable discrepancy — if something is not posted, contact the Division before filing your application.

Option reduction factors: For Options 2-4 and A-D, the reduction depends on both your age and your beneficiary's age at retirement. A 62-year-old retiree naming a 58-year-old spouse will see a larger reduction than a 62-year-old naming a 65-year-old spouse, because the state expects to pay the younger beneficiary for longer.

What the Estimate Does Not Tell You

The estimate shows gross monthly amounts. It does not show:

• Federal or state tax withholding
• Chapter 78 or Chapter 44 health premium deductions
• Outstanding pension loan repayments
• Medicare Part B premium costs (once you reach 65)

To know what actually hits your bank account, subtract the applicable deductions from the gross figure. The net amount can be materially lower than the headline number on your MBOS estimate.

Common Errors to Watch For

Stale salary data. If your most recent salary increase has not been reported to the Division by your employer, the estimate will use the old figure. This is especially common for members who run estimates mid-fiscal-year before the employer's annual reporting cycle.

Missing service credit. Prior public employment, military time, or a past PERS/TPAF membership where you withdrew contributions may not appear in your posted service total. Submit a purchase application before filing for retirement.

Wrong tier. Your tier is determined by your original enrollment date. If the estimate uses the wrong tier — showing a 1/60 formula when you should be 1/55 — contact the Division immediately. Tier errors affect every downstream calculation.

The NJ PERS & TPAF Retirement Guide includes a field-by-field walkthrough of the MBOS estimate and a service credit audit worksheet to verify that every year of your career is properly posted.

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