New to IPERS or five years out? A stage-by-stage guide to every IPERS decision - vesting, Rule of 88, payout options, taxes - from Iowa fee-only CFP® professionals.
If you work for the State of Iowa, a school district, a county, a city, or a utility, you're almost certainly in IPERS. About 424,000 Iowans are — roughly 186,000 still working and another 129,000 already drawing a monthly benefit.
And so here's what we run into at the kitchen table over and over: IPERS is a genuinely good pension, and most members know almost nothing about how it actually works until they're about eighteen months from walking out the door. By then a couple of the biggest decisions are already made for you.
This page is the map. We've written a lot on IPERS over the years, and rather than make you hunt through the blog, we've laid it out in the order you'll actually need it — from your first day on the job to the tax return you file three years into retirement. Each stage gives you the short version, then points you to the full article.
If you'd rather have one long deep-dive than a map, start with Retiring with IPERS in Iowa. That's our main guide to the Rule of 88, the payout options, and taxes.
IPERS is a defined benefit plan. Translation: you are not building a pile of money that you then have to make last the rest of your life. You're earning a monthly paycheck for life, calculated off a formula.
For Regular members the formula is straightforward: the average of your highest five years of salary, multiplied by your multiplier. You earn 2 percentage points a year for your first 30 years, then 1 point a year for years 31 through 35. So 30 years gets you 60% of that average, and 35 years maxes you out at 65%.
Simple numbers here. Thirty years of service, a highest-five average of $70,000, and you're looking at $42,000 a year — $3,500 a month — for as long as you live. For perspective, the average IPERS retiree collected about $2,199 a month in the most recent fiscal year.
You and your employer both pay in. For Regular members in fiscal years 2026 and 2027, that's 6.29% out of your paycheck and 9.44% from your employer. And here's a piece people miss: IPERS members pay into Social Security too. Unlike public employees in some other states, you're building both. That's a real advantage, and it changes how we plan.
Two things matter early, and one of them has a clock on it.
If you're a new Board of Regents employee, you get a choice — once. Faculty and staff at Iowa's Regents institutions pick either IPERS or TIAA within their first 60 days, and that election is irrevocable. One is a guaranteed pension you can't outlive. The other is a portable investment account you control. Neither one is wrong, but they're built for very different careers, and 60 days is not a lot of runway to figure that out on your own.
→ IPERS vs. TIAA: Which Iowa Retirement Plan Should You Choose?
The other thing is vesting. You're vested in IPERS after seven years of service, or when you turn 65 while still in covered employment — whichever comes first. Before that seven-year mark, the employer's contributions aren't really yours yet. That matters a lot if you're thinking about changing jobs at year five or six.
The single most expensive IPERS mistake we see has nothing to do with the Rule of 88. It's a vested member leaving public employment at 41, taking the refund, and rolling it into a checking account to pay off a truck.
Here's the deal. If you take a refund before you're vested, you get your own contributions plus interest — and that's it. If you're vested, you get your contributions plus a share of your employer's, calculated as your years of service divided by 30. Even at the best case, you're trading a monthly check for life for a lump sum today. Sometimes that's the right call. Usually it isn't. It's your decision, but our recommendation is almost always to leave it alone and let it grow into a benefit.
The other part of mid-career is stacking a second account on top of the pension. IPERS at 30 years replaces 60% of your highest-five average. That's terrific, and it is not the whole picture. Most Iowa public employers offer a 457(b), and school employees usually have a 403(b) too. The 457(b) in particular has a feature almost nobody knows about: no 10% early withdrawal penalty once you separate from service, at any age. If you're planning to retire at 57 under the Rule of 88, that account is your bridge.
This is where most people find us. And the question is always the same: can I go now, or does it cost me?
IPERS has three doors to full, unreduced benefits, and you take whichever one opens first:
You can start a benefit as early as 55, but going early gets expensive. Service you earned through June 30, 2012 is reduced 3% for each year you're early. Service earned after that date is reduced 6% a year. And that reduction is permanent — it doesn't heal itself when you hit 65.
Simple math on our $3,500-a-month example: retiring three years before you hit the Rule of 88, mostly on post-2012 service, knocks roughly 18% off. That's about $630 a month, every month, for thirty years. Call it $226,000 in lifetime benefit. Sometimes leaving early is absolutely worth it — your health, a parent who needs you, a job that's grinding you down. But you should make that trade with the number in front of you, not after the fact.
→ IPERS Rule of 88: When Can You Retire With Full Benefits?
→ Retiring with IPERS in Iowa: the full guide
→ Retiring from UNI? You Deserve a Plan as Smart as Your Career
→ How to Retire Confidently in Cedar Falls, Iowa
IPERS gives you six ways to take your benefit. You pick one, you sign, and it is permanent. No do-overs, no changing your mind in year three.
The six options come down to one trade: how much do you take for yourself, versus how much keeps flowing to your spouse after you die? Option 3, the single life annuity, pays you the most and pays your survivor nothing. The joint and survivor options (100%, 75%, 50%, or 25%) pay you less every month so that your spouse keeps getting a check. There's also a pop-up version that raises your payment back up if your spouse dies first.
Here's just to get slightly morbid for a second, because somebody has to say it: if you take the single life option and you die at 71, your spouse's household income can fall off a cliff in the same month they're planning a funeral. We've sat with that. The extra few hundred a month you gave up for the joint option looks awfully cheap from that chair.
And this decision doesn't sit by itself. It interacts with your Social Security claiming strategy, with your spouse's own pension or benefit, and with when each of you stops working. Run them together, not one at a time.
→ IPERS Payout Options Explained: How to Choose Among All Six
→ Social Security for Married Couples: The Math Nobody Runs
→ A Guide for Couples Retiring at Different Times
Good news first. Iowa doesn't tax your IPERS benefit if you're 55 or older, disabled, or the surviving spouse of someone who would have qualified. Iowa's retirement income exclusion wipes out state tax on pensions, 401(k)s, IRAs, and IPERS, and Social Security is exempt for everyone. Whatever's left of your taxable income gets Iowa's flat 3.8% rate in 2026.
Now the part people get wrong: the federal government still taxes every dollar of it. Your IPERS contributions went in pretax, so the benefit comes out fully taxable on your 1040. Get your W-4P withholding set correctly in your first year or you'll get a surprise in April.
The bigger opportunity is the window between the day you retire and the day RMDs start. If you retired at 58 with a 457(b) and a 403(b) sitting there, those accounts are a ticking time bomb heading toward required minimum distributions in your mid-70s. The years before Social Security starts and before RMDs kick in are usually your lowest-tax years for life. That's the window to do Roth conversions — and to watch the Medicare IRMAA brackets so a conversion doesn't spike your premiums two years later.
We have to pay our share. We just don't have to leave Uncle Sam a tip.
→ Is IPERS Taxable? How Your Pension Is Taxed in Iowa vs. Federally
→ Does Iowa Tax Retirement Income? A Plain-English Guide
→ Iowa's Advantage: One of the Best States to Retire Tax-Wise
→ Roth Conversions in Retirement: Smart Tax Moves Explained
→ RMD Planning: How to Avoid the Retirement Tax Bomb
→ Am I Automatically Enrolled in Medicare?
→ Medicare IRMAA: How to Avoid Surprises
→ 7 Ways to Lower Taxes in Retirement
Your IPERS check does not go up with inflation.
Regular members get no automatic cost-of-living adjustment. None. The November Dividend only reaches people who retired on or before June 30, 1990, and the Favorable Experience Dividend account was exhausted back in January 2014. A 1.5% COLA exists for certain Sheriffs and Deputies, and as of July 1, 2026 it extends to qualifying Protection Occupations members — but if you're a Regular member, which is most of you, the number on your first check is the number on your last check.
And so run the math with us. That $3,500 a month, twenty years in, at a modest 2.5% inflation? It buys what about $2,135 buys today. Same check. Forty percent less groceries.
This is not a reason to panic and it is not a knock on IPERS — a guaranteed lifetime benefit is a wonderful thing to build a plan around. It's a reason to put growth somewhere else in the picture. Your 457(b), your IRA, your brokerage account, and your Social Security (which does get a COLA) are the parts that have to carry the inflation load. Most of the IPERS plans we build come down to that one idea: the pension is the floor, and something else has to be the ladder.
Does that make sense? If not, just give us a holler.
Start here
The big IPERS decisions
Iowa taxes and living here
Social Security, Medicare, and the tax window
The Rule of 88 means your age plus your years of IPERS service add up to 88 or more, which qualifies you for a full, unreduced benefit. It's one of three doors to normal retirement age — the others are the Rule of 62/20 (age 62 with at least 20 years of service) and simply reaching age 65. You take whichever one you hit first.
Seven years of service for Regular members, or reaching age 65 while still in covered employment, whichever comes first. Before you're vested, a refund gives you back only your own contributions plus interest. Once you're vested, a refund also includes a share of your employer's contributions — your years of service divided by 30.
No, not for most retirees. Iowa's retirement income exclusion removes state income tax on pension and retirement plan income for taxpayers who are 55 or older, disabled, or the surviving spouse of someone who would have qualified. IPERS benefits fall under that exclusion, and Social Security is exempt in Iowa for everyone. Your IPERS benefit is still fully taxable on your federal return.
Regular members get no automatic COLA. The November Dividend applies only to members who retired on or before June 30, 1990, and the Favorable Experience Dividend account was exhausted in January 2014. A 1.5% COLA applies to qualifying Sheriffs and Deputy Sheriffs, and beginning July 1, 2026 it extends to qualifying Protection Occupations members. For a Regular member, plan on the benefit staying flat for life and let your other accounts carry the inflation load.
Yes. IPERS members pay into Social Security through FICA, so you earn both. And because IPERS is Social Security-covered employment, the old Windfall Elimination Provision and Government Pension Offset rules generally never applied to an IPERS-only career — and both were repealed by the Social Security Fairness Act signed in January 2025.
No. The payout option you elect at retirement is permanent. That's why we'd rather run the survivor math with you a year before you retire than a year after. The difference between the single life option and a joint and survivor option can be a few hundred dollars a month while you're both alive, and the difference between a comfortable widow or widower and a scary one afterward.
Most of the IPERS decisions on this page are one-way doors. The Regents election, the retirement date, the payout option — you get one shot at each, and the difference between a good choice and a rushed one is regularly six figures over a retirement.
We're Mike Dunlop and Casey Redmond, both CFP® professionals, and Ignite Financial is a fee-only, flat-fee firm in Cedar Falls. No commissions, no products to sell you, no percentage of your portfolio. We work with a lot of Iowa public employees — teachers, UNI staff, county and city folks — and we'll happily sit down and run your actual numbers.
Schedule a free introduction meeting and let's see what your IPERS decision really costs, either way.
Sources: Iowa Public Employees' Retirement System (ipers.org) — contribution rates, vesting, benefit calculation, payout options, refunds, and dividends; Iowa Department of Revenue — 2026 individual income tax rate and retirement income exclusion guidance; Iowa Code §422.7; Social Security Administration — Social Security Fairness Act.
This article is for educational purposes only and is not individualized investment, tax, or legal advice. IPERS rules and tax law change; verify current details with IPERS and your tax professional before acting. Ignite Financial is a registered investment adviser.