Oregon PERS Waiting Time Purchase: Is It Worth It?

If you’re an Oregon PERS Tier One or Tier Two member getting serious about retirement, you may have noticed a line on your formal benefit estimate for “waiting time purchase.” It’s one of the most common Oregon PERS service purchases, and it can be a meaningful planning opportunity when used thoughtfully.

In this article, I’ll walk through what the Oregon PERS waiting period is, who can buy it, how much it typically costs, how it can increase your pension benefit, and how to think about the break-even point. If you prefer processing information audibly, here’s a summary video on the topic:

What Is the Oregon PERS Waiting Period (Waiting Time)?

The six-month waiting period in plain English

For Tier One and Tier Two members, PERS membership usually starts after a six-month waiting period in a qualifying position with a PERS-participating employer. During that time, you’re working, but you’re not yet a PERS member and no PERS contributions are going in on your behalf. So, “waiting time” is that initial six-month stretch of eligible employment before PERS contributions began.

The option to buy waiting time

Oregon PERS allows eligible Tier One and Tier Two members to buy back that waiting period as additional service credit. This is called a waiting time purchase or waiting period purchase. Here are the key points you need to understand about it:

• It generally covers up to six months (or in some cases a bit more, depending on how your employment started).

• You’re essentially paying in the contributions that didn’t get made during those first months on the job.

• When you do this, your total years of service increase, which can:

  • Move your earliest eligible retirement date a little sooner, and

  • Increase your monthly pension benefit for life.

Who Can Purchase Oregon PERS Waiting Time?

Tier One & Tier Two only

The waiting time purchase is only available to Tier One and Tier Two members.

• Tier One / Tier Two: You usually don’t receive service credit for your waiting time automatically. Instead, you have the option to purchase it.

• OPSRP: Members automatically receive service credit for their waiting time once they complete the waiting period and establish membership. They do not need (or get) a purchase option for that six-month period.

Other basic eligibility rules

From PERS guidance, key eligibility criteria include:

• You must be a Tier One or Tier Two member.

• You must have enough creditable service (often at least 10 years including prior service).

• You can typically purchase waiting time for each qualifying waiting period you served with a PERS employer.

• You generally must complete the purchase before your retirement effective date.

Your specific eligibility and cost will appear on your PERS benefit estimate (more on that below).

How Does an Oregon PERS Waiting Time Purchase Work?

What you’re actually buying

When you buy waiting time, you are paying:

• The employee contributions that would have gone into PERS during that waiting period, plus

• The employer contributions that would have been made on your behalf.

Unlike some other purchase types, PERS does not charge interest on waiting time purchases — you’re just making up the contributions that never happened.

How you pay for it

• The cost must generally be paid in a lump sum.

• You can often pay using personal funds or, in some cases, via a transfer from a deferred comp account (for example, from an Oregon Savings Growth Plan or a 457(b) plan), subject to plan rules. Because this is a trustee-to-trustee transfer from one pre-tax retirement plan into PERS to fund a service purchase, the transfer is considered a nontaxable event, so long as it moves directly from the plan to PERS (not to you personally first). To facilitate paying for your waiting time this way, you’ll need to complete the Trustee to Trustee Transfer Form for PERS Purchases. Current rules do not allow you to use IAP funds or an IRA to make a service purchase.

• Payment must be completed within the 90 days before your retirement date and received by PERS before your retirement effective date, so it’s a decision you’ll want to make as part of your overall retirement application timeline.

Where to find your waiting time cost

On a Tier One/Two formal benefit estimate, you’ll typically find:

• A line showing the cost of purchasing your waiting time.

• A note that it’s a service purchase, often on the last page or two.

• The difference between your pension options with, and without the service purchase.

• Want a hand interpreting your benefit estimate? Check out our blog: How to Read Your Oregon PERS Benefit Estimate.

If you don’t see it, you may need to:

• Request a new estimate with your preferred retirement dates, and/or

• Call PERS to ask specifically about waiting time purchase.

How Much Does It Typically Cost?

Because cost is based on your actual history, there is no “one-size-fits-all” number. The cost depends on:

• Your salary during the waiting period (or an approximation thereof),

• The employer’s contribution rate for your job class at that time, and

• The length of the waiting time you’re allowed to buy (often up to six months).

What I’ve seen over the years, for many Tier One/Two members:

• Costs typically range from a few thousand dollars for average salaries / shorter waiting periods

• Up to the low-five figures for very high earners or those with multiple waiting periods.

Because PERS does not add interest to waiting time purchases, this can be one of the more affordable types of service purchase, relative to some “full-cost” purchases. Forfeited time, military time and others are often in the mid-high five figure range, if not higher.

How Much Can an Oregon PERS Waiting Time Purchase Increase Your Pension?

The basic formula

For Tier One and Tier Two, your pension under the Full Formula method is generally based on:

Years of Service × Formula Factor × Final Average Salary

Adding up to six months of waiting time:

• Increases your years of service, and

• May also help you reach a key eligibility milestone sooner (like 30 years of service).

Both of these can increase your monthly benefit for life.

A simple example (for illustration)

• Final Average Salary (FAS): $80,000

• Formula factor: 1.67%

• Years of service without waiting time: 29.5

• Years of service with waiting time: 30.0

Without buying waiting time

• Annual pension = 29.5 × 0.0167 × $80,000 = $39,412/year

• Monthly pension ≈ $3,284/month

With a six-month waiting time purchase

• Annual pension = 30.0 × 0.0167 × $80,000 = $40,080/year

• Monthly pension ≈ $3,340/month

Difference

• Increase ≈ $672/year, or about $56/month

In real life, the increase could be smaller or larger depending on:

• Your salary

• Your job class and formula factor

• How close you are to key service milestones (e.g., 30 years)

• Which pension calculation method actually applies to you (Full Formula vs. Money Match, etc.).

How Long Does It Take to Break Even?

The break-even concept

A waiting time purchase is essentially a trade: you pay a one-time cost now to receive a slightly higher pension for the rest of your life. To estimate the break-even point, the math is straightforward:

Cost of Waiting Time Purchase ÷ Increase in Monthly Pension = Approximate number of months to break even

Once you’ve received that many months of pension payments, the purchase has effectively “paid for itself.” Every monthly payment after that point is net financial gain — ignoring inflation or alternative investment returns. Those factors are important, but they’re not guaranteed in the same way a lifetime PERS pension is protected under Oregon law and prior court decisions. Anxious about just how secure your pension is? You’re not alone. Check out our blog: Is My Oregon PERS Pension Secure?

A simple example (for illustration)

Step 1: Estimate the Cost of Buying Waiting Time

Assumptions:

• You earned $3,500/month during your initial waiting period.

• Employee contribution rate: 6% (0.06 × $3,500 × 6 = $1,260)

• Employer contribution rate: 12% (0.12 × $3,500 × 6 = $2,520)

• Waiting time length: 6 months

• Total estimated waiting time cost: $1,260 + $2,520 = $3,780

Step 2: Estimate the Increase in Monthly Pension

Using the earlier example of a Tier Two member with an $80,000 Final Average Salary, a six-month waiting time purchase increases service credit from 29.5 to 30.0 years, resulting in an increase of about: ≈ $56/month

Step 3: Calculate Break-Even

Break-even:

$3,780 ÷ $56 ≈ 67.5 months. That’s just over 5.5 years. So, if you collect that pension for at least 5.5 years, the purchase of waiting time will have been worth it.

Bottom Line

Most Tier One/Tier Two waiting time purchases break even within about 3–8 years, depending on your salary at hire and your final average salary at retirement. For members with long life expectancy, the long-term value can be compelling; however, like with all elements of your retirement plan, it should always be evaluated using your personalized PERS estimate.

Factors to Consider Before Buying Waiting Time

When a waiting time purchase may make sense

A waiting time purchase may be most compelling when:

• You expect a long retirement horizon. If you retire early and have strong family longevity, you’re more likely to collect benefits for many years beyond the break-even point.

• You’re close to a major milestone like 30 years of service or a specific age/service combo that changes your eligibility or factor.

• Your benefit increase per dollar of cost looks favorable when you run the break-even math.

• You value guaranteed lifetime income and see this as a way to “buy more pension” that you can’t outlive.

When it might be less attractive

Waiting time may be less appealing when:

• You’re in poor health or expect a shorter retirement, making it less likely you’ll reach the break-even point.

• The cost is high relative to the benefit increase (long break-even period).

• You’re already planning substantial lump sum withdrawals or rollovers and want to preserve cash flexibility instead of locking it into a larger pension. (Considering taking a lump sum distribution instead of a pension from PERS? Read our blog: Understanding Oregon PERS Lump Sum Options.)

• You prefer to invest those dollars elsewhere (for example, in tax-advantaged accounts or a diversified portfolio) and believe you can reasonably earn more than the implicit return from buying waiting time.

How to Get Your Own Numbers

Step 1: Request a current Oregon PERS benefit estimate

Ask PERS for a Tier One/Tier Two benefit estimate using the retirement date(s) you’re considering. This will show:

• Your projected monthly benefit under each calculation method and option.

• A page showing the cost of available purchases, including waiting time (if applicable).

Step 2: Identify the waiting time purchase line

On the last page or so, look for the section listing:

• “Waiting time” or “Credit for waiting time”

• The cost to purchase it.

If it’s not listed, that may mean:

• You’ve already purchased it,

• You’re not eligible, or

• It simply wasn’t included — in which case, call PERS and ask them to clarify or provide an updated estimate.

Step 3: Run your own break-even analysis

With help from a financial planner or on your own:

1. Ask PERS for a formal benefit estimate.

2. Record the difference between the ‘with purchase’ and ‘no purchase’ columns in monthly pension.

3. Divide the cost by the monthly difference to approximate your break-even point in months/years.

4. Layer in:

   • Your age at retirement

   • Health, family longevity, and survivorship goals

   • Other income sources (Social Security, IAP, deferred comp, savings, etc.)

Final Thoughts: Is the Oregon PERS Waiting Time Purchase Right for You?

The Oregon PERS waiting period can be an easy-to-miss detail with a surprisingly meaningful impact: for many Tier One and Tier Two members, buying waiting time can:

• Add up to six months of service credit

• Modestly boost your monthly pension for life

• Sometimes accelerate your eligibility date

But like any pension decision, it’s highly individual. The value of a waiting time purchase depends on your cost, your benefit increase, your health and longevity expectations, and your broader retirement plan. Looking to learn more about your pension options? Check out our blog: Deciding Which Oregon PERS Pension Benefit is Right for You.

If you’re a Tier One or Tier Two member approaching retirement, it’s worth:

• Requesting a fresh benefit estimate from PERS,

• Reviewing the waiting time cost and impact, and

• Talking with a fee-only, fiduciary financial planner who understands Oregon PERS to help you weigh the trade-offs in the context of your whole financial picture.

As always, I’m happy to serve as a resource for you however I can. Don’t hesitate to reach out if you want a hand reviewing your unique situation.