How can federal employees calculate their retirement annuity under FERS and CSRS?

By Jeff Gill

 Let’s dive into the world of federal retirement—specifically, figuring out how much money you’ll get every month once you’ve clocked out for good. Whether you’re under FERS (Federal Employees Retirement System) or CSRS (Civil Service Retirement System), it’s a good idea to have a ballpark figure of your retirement annuity. I mean, who doesn’t want to know if they’ll be sipping piña coladas by the beach or sipping... tap water at home? 


Let’s keep it real and break it down.


FERS: The New Kid on the Block


If you’re under FERS, your retirement annuity is like a financial sandwich: your pension, Social Security, and the Thrift Savings Plan (TSP). But let’s focus on the pension part here.


Here’s the formula for FERS:


High-3 Salary x Years of Service x 1%

What’s your “High-3 Salary”? It’s the average of your three highest-earning consecutive years. For most, that’s the home stretch before retirement when you’re crushing it career-wise.


Let’s say your High-3 is $100,000, and you’ve worked 30 years. Here’s the math:


$100,000 x 30 x 1% = $30,000 per year, or $2,500 per month. Boom. That’s your base annuity.


Now, if you retire at 62 or older with at least 20 years of service, the multiplier bumps up to 1.1%. So, the same example becomes:


$100,000 x 30 x 1.1% = $33,000 per year, or $2,750 per month. 


Sweet, right?


CSRS: Old-School Classic


For those under CSRS (pre-1984 hires, you lucky ducks), the formula is different and… better. Sorry, FERS folks.

Here’s how it works:


  • 1.5% x High-3 x First 5 Years of Service

  • 1.75% x High-3 x Next 5 Years of Service

  • 2% x High-3 x Years Beyond 10


Let’s break it down. Say your High-3 is $100,000, and you’ve worked 30 years:


  • 5 years: $100,000 x 5 x 1.5% = $7,500

  • Next 5 years: $100,000 x 5 x 1.75% = $8,750

  • Remaining 20 years: $100,000 x 20 x 2% = $40,000


Total: $7,500 + $8,750 + $40,000 = $56,250 per year, or $4,687.50 per month. Not bad, huh?


The Fine Print


A couple of things to keep in mind:


  1. Survivor Benefits: Want to leave money for your spouse? That’ll reduce your annuity slightly. Worth it, though, if you love ‘em (wink).

  2. Taxes: Yep, Uncle Sam still wants a slice of your pie. Plan for it.

  3. COLA (Cost of Living Adjustments): CSRS folks get these automatically. FERS retirees only get them if they’re 62 or older. Ageism, much?


Tools to Help


Math not your thing? No worries. Use the FERS Retirement Calculator or the CSRS Retirement Calculator from OPM to make life easier.


Final Thoughts


Retirement math doesn’t have to be scary. Think of it as planning your next big adventure. Whether you’re under FERS or CSRS, knowing your annuity is like mapping your financial future. Now, go crunch those numbers and start dreaming about what’s next!

Jeff Gill