FERS Annuity Calculator
As of April 1, 2026, the most useful first step for many federal households is not another RIF explainer. It is pricing the FERS annuity already earned and checking whether the separation path in front of you creates an immediate, reduced, or deferred retirement decision.
David Duley· Founder & CEO
Published April 1, 2026
Reviewed by Jon Ragsdale for factual accuracy, source quality, and clarity.
This calculator estimates the basic gross FERS annuity and checks the common retirement paths that matter most under separation risk: standard immediate retirement, VERA or discontinued-service retirement, MRA+10, and deferred retirement.
It is deliberately narrower than a full federal retirement planner. The goal is to answer the first household question fast: do you already have a pension option worth pricing right now?
Two inputs trip people up more than almost anything else: minimum retirement age and creditable service. Your MRA is based on your birth year, not a guess, and your creditable service is the civilian service that actually counts toward the pension formula. If you are close to an eligibility line, that is exactly where HR confirmation matters.
Federal employees under separation risk usually need one number first: the gross pension they have already earned.
This estimator checks the common FERS retirement paths, prices the annuity using your high-3 and service, and shows when a reduced or deferred path may be the real answer.
How PRIA Approached This
This calculator was written by David Duley and reviewed by Jon Ragsdale. PRIA treats tools like this as household policy-risk explainers, not generic widgets. We separate current law from proposals when relevant, translate public rules into plain English, and present the output as an educational estimate rather than personalized advice.
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Frequently Asked Questions
- How is a basic FERS annuity calculated?
- For most FERS employees, the basic annuity is 1% of your high-3 average salary for each year of creditable service. If the annuity starts at age 62 or later with at least 20 years of service, the multiplier is usually 1.1% instead.
- What does high-3 mean in FERS?
- High-3 means the highest-paid consecutive 36 months of basic pay. It is often the final three years, but not always. Basic pay generally excludes overtime, bonuses, and similar extras.
- When can I retire immediately under FERS?
- The common immediate paths are age 62 with at least 5 years of service, age 60 with at least 20 years, or your minimum retirement age with at least 30 years. Some early-out or involuntary-separation paths can open earlier than that.
- What is MRA+10 retirement?
- MRA+10 means you reached your minimum retirement age and have at least 10 years of service, but not enough for a standard unreduced immediate retirement. The annuity is generally reduced by 5% for each year it begins before age 62 unless it is postponed.
- What does this calculator leave out?
- This estimator focuses on the basic FERS pension and common retirement paths. It does not include unused sick leave, survivor elections, disability retirement, special-category employee formulas, military deposit strategy, FEHB eligibility, or taxes.
The first fork in the road is not political. It is pension math. See whether your path looks immediate, reduced, early-out, or deferred.
Start Free Watch →FERS Annuity Estimator: The Short Answer
For most FERS employees, the core pension formula is still simple: 1% of your high-3 average salary for each year of creditable service, or 1.1% if the annuity starts at age 62 or later with at least 20 years. What is not simple is knowing which retirement path actually applies to your separation date.
What This Tool Estimates Well
- The basic gross annual and monthly FERS annuity.
- Whether your inputs fit a common immediate retirement path.
- Whether MRA+10 creates a reduced annuity instead of a full one.
- Whether a deferred-retirement age is the more realistic answer.
How To Find Your MRA and Creditable Service
FERS does not use one retirement age for everyone. Your minimum retirement age depends on your birth year, which is why the chart steps up gradually from age 55 for older cohorts to age 57 for employees born in 1970 or later.
Creditable service is not just “time on the job” in the casual sense. It is the service that counts toward the annuity formula under FERS. This calculator is best when you already know that number or can get a reasonably clean estimate from your records, SF-50 history, or HR office.
What This Tool Does Not Estimate
This is not a full retirement adjudication. It does not include unused sick leave credit, survivor elections, disability retirement, special-category formulas, court orders, military deposit strategy, FEHB continuation rules, or tax withholding.
It also does not determine whether your agency actually has VERA authority or whether a specific separation qualifies as discontinued-service retirement. It simply shows what those paths would mean if they are available.
It also does not estimate the FERS annuity supplement, which can be a meaningful bridge benefit for some employees retiring before age 62. That omission is deliberate: this tool is built to price the core pension formula first.
Why This Matters in a Buyout or RIF Decision
Federal households often fixate on the headline event and delay the annuity math. That is backwards. If you already crossed an immediate retirement threshold, your real decision is no longer just severance-versus-job-search. It becomes pension timing, FEHB continuity, and bridge-cash planning.
Common Questions
How is a basic FERS annuity calculated?
For most FERS employees, the basic annuity is 1% of your high-3 average salary for each year of creditable service. If the annuity starts at age 62 or later with at least 20 years of service, the multiplier is usually 1.1% instead.
What does high-3 mean in FERS?
High-3 means the highest-paid consecutive 36 months of basic pay. It is often the final three years, but not always. Basic pay generally excludes overtime, bonuses, and similar extras.
When can I retire immediately under FERS?
The common immediate paths are age 62 with at least 5 years of service, age 60 with at least 20 years, or your minimum retirement age with at least 30 years. Some early-out or involuntary-separation paths can open earlier than that.
What is MRA+10 retirement?
MRA+10 means you reached your minimum retirement age and have at least 10 years of service, but not enough for a standard unreduced immediate retirement. The annuity is generally reduced by 5% for each year it begins before age 62 unless it is postponed.
What does this calculator leave out?
This estimator focuses on the basic FERS pension and common retirement paths. It does not include unused sick leave, survivor elections, disability retirement, special-category employee formulas, military deposit strategy, FEHB eligibility, or taxes.
Related Analysis
- Federal Employee Buyout and RIF Guide 2026 - the broader planning guide for FERS, FEHB, TSP, and separation decisions.
- Social Security Benefits Calculator - useful when you want to compare pension timing with later retirement-income layers.
- Medicare Premium Calculator - helpful for older federal households modeling post-separation healthcare costs.