For OMERS, HOOPP, PSPP, LAPP, and federal PSSA members — compare your buyback cost against investing the same money in an RRSP, understand the PSPA tax trap, and get a straight answer.
| Scenario | Value at Age 75 | Value at Age 80 | Value at Age 85 | Value at Age 90 |
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* Pension lifetime value = cumulative annual pension increase × years collected, inflation-adjusted at 2%/yr. RRSP value = buyback cost invested at selected rate, compounded to retirement then drawn down at 4%/yr. Not financial advice.
A pension buyback lets you purchase credited service for periods when you were employed but not contributing to the plan.
Eligible service periods vary by plan but typically include: leaves of absence, parental or maternity leave, periods of part-time work, probationary periods before plan enrollment, prior employment with a different employer covered by the same or a related plan, and sometimes service with a predecessor employer.
Buying back service increases your total credited years, which directly increases your annual pension benefit. For a plan with a 2% accrual rate, buying back 1.5 years of service on a $90,000 salary increases your annual pension by $2,700 — permanently, indexed to inflation, payable for life.
The cost is set by your plan's actuary. It's calculated to be actuarially neutral for the plan — meaning the cost is set so that the plan doesn't lose money on the transaction at average mortality. That's important: if you live longer than average, you come out ahead. If you don't, the plan does.
| Plan | Who It Covers | Funded Status (approx.) | Inflation Indexed? |
|---|---|---|---|
| OMERS | Ontario municipal workers, transit, utilities, agencies | ~97% | Yes — 75% of CPI |
| HOOPP | Ontario hospital and healthcare workers | ~115% | Yes — full CPI |
| PSPP / OPB | Ontario public service employees | ~99% | Yes — full CPI |
| LAPP | Alberta local authorities, municipalities, public service | ~107% | Yes — partial |
| BC Municipal PP | BC municipal, transit, utility workers | ~100% | Yes — CPI-linked |
| PSSA (federal) | Federal public servants (Group 1 and Group 2) | Notional — Crown guarantee | Yes — full CPI |
| CUPE/CATSN plans | Various municipal, transit, utility workers by province | Varies | Varies |
HOOPP's 115% funded ratio is a meaningful signal — it's one of the best-funded large pension plans in the world. OMERS at ~97% is fine but tighter. If you're in HOOPP, the plan risk argument for skipping a buyback is essentially moot.
The single biggest reason to run the numbers before writing a cheque. Miss this and you could end up paying tax twice on the same money.
When you buy back service that occurred after 1989, your plan administrator must file a Past Service Pension Adjustment (PSPA) with CRA. The PSPA reduces your RRSP deduction limit by the same amount as the value attributed to the service you're purchasing.
Here's the critical part: to buy back service, you need enough RRSP room to absorb the PSPA. If you don't, CRA won't certify the buyback (T1004 — Applying for the Certification of a Provisional PSPA), and you either can't proceed or the cost becomes after-tax dollars funding a pre-tax benefit — a terrible deal.
How PSPA certification works: Your plan submits Form T215 to CRA. CRA checks whether your RRSP room ≥ PSPA amount. If yes, they certify it and your RRSP room is reduced accordingly. If no, the plan may allow partial buyback up to your available room, or you may need to make a qualifying transfer from your RRSP to cover the shortfall.
The size of the PSPA is roughly: (9 × annual pension benefit earned) − $600 per year of bought service. For a $19,000 buyback on 17 months of service at a 2% plan, the PSPA might be $12,000–$16,000 depending on salary and accrual. Check with your plan administrator for the exact figure.
The double-tax trap: If you don't have RRSP room to absorb the PSPA, you're funding a pre-tax pension benefit with after-tax dollars. The plan will eventually pay you pension income that gets taxed on the way out — and you already paid tax on the contribution. You've paid tax twice. Don't do this.
Check your RRSP deduction limit on CRA My Account before committing to a buyback. If your room is borderline, talk to your HR department about PSPA certification timing — it can sometimes be done in stages across multiple tax years.
Related: our DB pension vs RRSP guide covers the pension adjustment mechanic (PA) in full — the PA and PSPA are related but distinct concepts that DB plan members should understand.
If you have RRSP room, a buyback in a well-funded, indexed plan is hard to beat. Here's why.
The implied annual return on a pension buyback is typically 6–8% real (after inflation). Here's the reasoning:
Actuaries price buybacks conservatively. They assume a long-run investment return of maybe 5.5–6.5% nominal, and they factor in average mortality. But the pension is indexed to inflation — meaning it's a real return of 6–8% with no market risk, no sequence-of-returns risk, and no outliving-your-money risk.
To match that in an RRSP, you'd need to earn 6–8% real and manage sequence risk through a 20–30 year retirement. That's doable, but it's not guaranteed. The pension guarantee comes from the plan's funding, employer backstop, and (for public sector plans) the provincial or federal government behind it.
Real example — "Omer buys back 19K for 17 months": At $19,000 for 1.42 years of OMERS service on a ~$85,000 salary, the annual pension increase is roughly $85,000 × 2% × 1.42 = $2,414/year. That pension income starts at retirement and continues for life, indexed. Break-even (recovering $19,000 in cumulative benefit) is roughly 7–9 years of pension collection. Live to 80 and the pension has paid out $48,000+ in 2024 dollars on a $19,000 buy-in. That's a strong return.
Pension income from a DB plan can be split 50/50 with a lower-income spouse after age 65. A $2,400/year pension increase might effectively be taxed at your spouse's lower marginal rate — worth an extra few hundred dollars annually for decades. RRSP income can do the same via a spousal RRSP, but only if you set it up correctly in advance.
See our spousal RRSP income splitting guide for the full strategy comparison.
The math almost always favors the buyback — but there are four scenarios where it doesn't.
If you can't get T1004 certification — or if absorbing the PSPA leaves you with virtually no RRSP room — consider whether the buyback is worth doing at all this year. Either top up your RRSP room first (using the next 1–2 tax years to accumulate room), then buy back. Or do a partial buyback this year within available room.
With fewer compounding years, the pension's advantage over a lump-sum RRSP investment shrinks. The break-even longevity age (how old you need to be for the pension to beat the RRSP alternative) pushes out. If your retirement is imminent and health is uncertain, the RRSP — which has residual estate value — becomes more competitive.
Private sector DB plans and some smaller public plans have been known to cut indexed benefits or reduce accruals when funding deteriorates. OMERS at 97%, HOOPP at 115%, LAPP at 107% — these plans are fine. A plan at 75% with a troubled employer backstop is a different conversation. Check your plan's most recent annual report before buying into a stressed plan.
A pension buyback is priced for average mortality. If your personal health history suggests significantly below-average life expectancy, the actuarial math shifts against you. The RRSP alternative — which has estate value — starts to make more sense. This is blunt but relevant.
If any of these apply, the answer isn't automatically "don't buy back." It's "run the numbers carefully and consider a partial buyback or a delayed buyback when your RRSP room improves." The default position for a healthy public sector worker with 10+ years to retirement and RRSP room available is: buy back.
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Pension buybacks are one piece of the public sector retirement picture. These pages cover the rest.
The buyback decision doesn't exist in isolation — pension adjustments, RRSP room, commuted value, and CPP strategy are all connected.
DB Pension vs RRSP Guide → CPP Bridge Strategy →This calculator is for educational purposes only and does not constitute financial, tax, or legal advice. Pension rules, PSPA amounts, and CRA regulations may change. Figures are estimates — actual buyback costs and pension accruals depend on your specific plan and service history. Consult a fee-only financial planner or your plan administrator before making buyback decisions.