NYC TRS Buy Back Service Credit: Costs, Forms, and Deadlines

Why Service Credit Buybacks Matter

Every year of credited service in your NYC TRS record increases your monthly pension. The benefit multiplier for Tier IV jumps from 1.667% per year (under 20 years) to 2.0% per year (20–29 years) to 60% of FAS at exactly 30 years. For a member with an FAS of $100,000, the difference between 19 years and 20 years of credit is not just one additional year of the multiplier — it is the difference between the 1.667% rate and the 2.0% rate applied to every year of service.

Buying back prior service can also push you past the threshold for the 55/25 program (unreduced retirement at age 55) or clear the 10-year mark for retiree health insurance eligibility.

What Service Can You Buy Back?

Prior public service (Form SB146): Service performed with a New York City or New York State public employer before you joined TRS. This is filed as the Record of Prior Service e-form through MyTRS. The employer must verify the dates of service.

Military service (Form SD68): Eligible military service under USERRA or NYS Military Law. Tier III and IV members pay 3% of compensation earned during the military period (plus an additional 1.85% if enrolled in the Age 55 program). Tier VI members pay 6%. You need to provide Form DD-214 as proof of discharge.

Substitute teaching (Amann service): Per-diem or substitute teaching time performed during leaves of absence or before your full appointment. The eligibility rules are specific to your employment history and tier.

Tier reinstatement: If you previously left NYS public employment and received a refund of your retirement contributions, you can restore your prior tier and service credit by filing Form SD42 and repaying all refunded contributions plus 5% annual compound interest.

How Much Does It Cost?

The buyback cost is based on a percentage of the wages you earned during the prior service period, plus interest accrued from the date of service to the date of payment.

• Tier IV (Basic Plan): 3% of wages during the prior service period
• Tier IV (55/25 or 55/27): 3% plus an additional 1.85% for the Age 55 program contribution
• Tier VI: 6% of wages during the prior service period

TRS calculates the applicable interest and includes it in the Cost Letter; rely on that letter for your full amount.

To find out your exact cost, request a Cost Letter using Form SB64. TRS will calculate the full amount including interest and send you a formal cost letter. This is not a commitment to buy — it tells you the price so you can decide.

Payment Options

Once you have the cost letter, you can pay by:

• Lump sum: A single payment to TRS
• Payroll deduction: Spread over remaining active paychecks (only available while you are still in service)

Both methods must be completed before your effective retirement date. If you start a payroll deduction plan, make sure the final deduction clears before your last paycheck.

The Deadline That Cannot Move

All service purchase applications, supporting documentation, and payments must be received by TRS before your effective retirement date. This is a hard statutory cutoff. If your effective retirement date is June 30 and your SB146 is still pending employer verification on that date, the service will not be credited in that retirement calculation.

Start the process at least 12 months before your target date. Prior service claims require employer verification, which can take weeks or months depending on the former employer's records retention. Military service claims require locating and submitting DD-214 documentation. Cost letter requests take time to process.

Filing your SB146 and SB64 should be one of the first things you do after deciding to retire — not one of the last.

MCAF Contribution Deficits

Separately from buybacks, check your MCAF balance for any mandatory contribution deficits. These arise when required QPP payroll deductions were missed or underpaid. Unresolved MCAF deficits do not block your retirement, but they reduce your pension actuarially — permanently. Pay them off before your effective date.

Running the Numbers

Before committing to a buyback, calculate what the additional service credit is worth. If purchasing two years of prior service at a cost of $8,000 moves you from 19 to 21 years (jumping from the 1.667% to the 2.0% multiplier), the resulting increase in your annual pension may pay back the buyback cost within the first year of retirement.

The NYC TRS Retirement Guide includes a Service Credit Audit Checklist for tracking buyback claims and a worksheet for calculating the breakeven on a service credit purchase.

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